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ELECTRONICS MECHANIC, NSQF LEVEL - 5, Revised in 2017, , 1st Year (Volume I of II), TRADE PRACTICAL, SECTOR: ELECTRONICS & HARDWARE, , DIRECTORATE GENERAL OF TRAINING, MINISTRY OF SKILL DEVELOPMENT & ENTREPRENEURSHIP, GOVERNMENT OF INDIA, , NATIONAL INSTRUCTIONAL, MEDIA INSTITUTE, CHENNAI, Post Box No. 3142, CTI Campus, Guindy, Chennai - 600 032, (i), , Copyright Free, Under CC BY Licence

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Sector, , : Electronics & Hardware, , Duration : 2 - Years, Trade, , : Electronics Mechanic - 1st Year (Volume I of II) - Trade Practical - NSQF level 5, , Developed & Published by, , National Instructional Media Institute, Post Box No.3142, Guindy, Chennai - 32, INDIA, Email: [email protected], Website: www.nimi.gov.in, Printed by, National Instructional Media Institute, Chennai - 600 032, , First Edition, Second Edition, , : August 2018, : September 2019, , Copies : 1,000, Copies : 1,000, , Rs.205/-, , (ii), , Copyright Free, Under CC BY Licence

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FOREWORD, , The Government of India has set an ambitious target of imparting skills to 30 crores people, one out of every, four Indians, by 2020 to help them secure jobs as part of the National Skills Development Policy. Industrial, Training Institutes (ITIs) play a vital role in this process especially in terms of providing skilled manpower., Keeping this in mind, and for providing the current industry relevant skill training to Trainees, ITI syllabus, has been recently updated with the help of Mentor Councils comprising various stakeholder's viz. Industries,, Entrepreneurs, Academicians and representatives from ITIs., The National Instructional Media Institute (NIMI), Chennai, an autonomous body under the Directorate, General of Training (DGT), Ministry of Skill Development & Entrepreneurship is entrusted with developing, producing and disseminating Instructional Media Packages (IMPs) required for ITIs and other related, institutions., The institute has now come up with instructional material to suit the revised curriculum for Electronics, Mechanic - Trade Practical - 1st Year (Volume I of II) in Electronics & Hardware Sector . The NSQF, Level - 5 Trade Practical will help the trainees to get an international equivalency standard where their skill, proficiency and competency will be duly recognized across the globe and this will also increase the scope, of recognition of prior learning. NSQF Level - 5 trainees will also get the opportunities to promote life long, learning and skill development. I have no doubt that with NSQF Level - 5 the trainers and trainees of ITIs,, and all stakeholders will derive maximum benefits from these IMPs and that NIMI's effort will go a long way, in improving the quality of Vocational training in the country., The Executive Director & Staff of NIMI and members of Media Development Committee deserve appreciation, for their contribution in bringing out this publication., Jai Hind, , RAJESH AGGARWAL, Director General / Addl. Secretary,, Ministry of Skill Development & Entrepreneurship,, Government of India., , New Delhi - 110 001, , (iii), , Copyright Free, Under CC BY Licence

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PREFACE, The National Instructional Media Institute (NIMI) was established in 1986 at Chennai by then Directorate, General of Employment and Training (D.G.E & T), Ministry of Labour and Employment, (now under Directorate, General of Training, Ministry of Skill Development and Entrepreneurship) Government of India, with technical, assistance from the Govt. of the Federal Republic of Germany. The prime objective of this institute is to, develop and provide instructional materials for various trades as per the prescribed syllabi under the Craftsman, and Apprenticeship Training Schemes., The instructional materials are created keeping in mind, the main objective of Vocational Training under, NCVT/NAC in India, which is to help an individual to master skills to do a job. The instructional materials are, generated in the form of Instructional Media Packages (IMPs). An IMP consists of Theory book, Practical, book, Test and Assignment book, Instructor Guide, Audio Visual Aid (Wall charts and Transparencies) and, other support materials., The trade practical book consists of series of exercises to be completed by the trainees in the workshop., These exercises are designed to ensure that all the skills in the prescribed syllabus are covered. The trade, theory book provides related theoretical knowledge required to enable the trainee to do a job. The test and, assignments will enable the instructor to give assignments for the evaluation of the performance of a trainee., The wall charts and transparencies are unique, as they not only help the instructor to effectively present a, topic but also help him to assess the trainee's understanding. The instructor guide enables the instructor to, plan his schedule of instruction, plan the raw material requirements, day to day lessons and demonstrations., In order to perform the skills in a productive manner instructional videos are embedded in QR code of the, exercise in this instructional material so as to integrate the skill learning with the procedural practical steps, given in the exercise. The instructional videos will improve the quality of standard on practical training and, will motivate the trainees to focus and perform the skill seamlessly., IMPs also deals with the complex skills required to be developed for effective team work. Necessary care, has also been taken to include important skill areas of allied trades as prescribed in the syllabus., The availability of a complete Instructional Media Package in an institute helps both the trainer and, management to impart effective training., The IMPs are the outcome of collective efforts of the staff members of NIMI and the members of the Media, Development Committees specially drawn from Public and Private sector industries, various training institutes, under the Directorate General of Training (DGT), Government and Private ITIs., NIMI would like to take this opportunity to convey sincere thanks to the Directors of Employment & Training, of various State Governments, Training Departments of Industries both in the Public and Private sectors,, Officers of DGT and DGT field institutes, proof readers, individual media developers and coordinators, but for, whose active support NIMI would not have been able to bring out this materials., , R. P. DHINGRA, Executive Director, NIMI, Chennai., , (iv), , Copyright Free, Under CC BY Licence

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ACKNOWLEDGEMENT, National Instructional Media Institute (NIMI) sincerely acknowledges with thanks for the co-operation and, contribution extended by the following Media Developers and their sponsoring organisations to bring out this, Instructional Material (Trade Practical) for the trade of Electronics Mechanic - 1st Year (Volume I of II)- NSQF, Level 5 under Electronics and Hardware sector., , MEDIA DEVELOPMENT COMMITTEE MEMBERS, Shri. Mohammed Ameer, , _, , Vocational Instructor, Maulana Azad National Urdu University, Hyderabad - 500032., , Shri. A. Jayaraman, , _, , Training officer (Retd.,), MDC Member,, NIMI, Chennai-32., , Shri. R.N. Krishnasamy, , _, , Vocational Instructor (Retd.,), MDC Member,, NIMI, Chennai-32., , NIMI - COORDINATORS, Shri. K. Srinivasa Rao, , _, , Joint Director,, NIMI, Chennai - 32, , Shri. S. Gopalakrishnan, , _, , Assistant Manager,, NIMI, Chennai - 32, , NIMI records its appreciation for the Data Entry, CAD, DTP operators for their excellent and devoted services in, the process of development of this Instructional Material., NIMI also acknowledges with thanks the invaluable efforts rendered by all other NIMI staff who have contributed, towards the development of this Instructional Material., NIMI is also grateful to everyone who has directly or indirectly helped in developing this Instructional Material., , (v), , Copyright Free, Under CC BY Licence

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INTRODUCTION, TRADE PRACTICAL, The trade practical manual is intented to be used in workshop . It consists of a series of practical exercies, to be completed by the trainees during the 1st Year course of the Electronic Mechanic Trade supplemented, and supported by instructions/ informations to assist in performing the exercises. These exercises are, designed to ensure that all the skills in the prescribed syllabus are covered., The manual is divided into Ten modules. The distribution of time for the practical in the Ten modules are, given below., Module 1, , Basic Workshop Practice, , 75 Hrs, , Module 2, , Basics of AC and Electrical Cables, , 45 Hrs, , Module 3, , Single Range Meters, , 30 Hrs, , Module 4, , Cells & Batteries, , 25 Hrs, , Module 5, , AC & DC Measuring Instruments, , 50 Hrs, , Module 6, , Soldering/Desoldering and various switches, , 25 Hrs, , Module 7, , Active and Passive Components, , 75 Hrs, , Module 8, , Power Supply Circuits, , 50 Hrs, , Module 9, , Computer Hardware, OS,MS Office and Networking, , 125 Hrs, , Module 10, , IC Regulators, , 25 Hrs, , Project Work, , 50 Hrs, Total, , 575 Hrs, , The skill training in the computer lab is planned through a series of practical exercises centred around some, practical project. However, there are few instance where the individual exercise does not form a part of, project., While developing the practical manual a sincere effort was made to prepare each exercise which will be easy, to understand and carry out even by below average trainee. However the development team accept that there, if a scope for further improvement. NIMI, looks forward to the suggestions from the experienced training, faculty for improving the manual., TRADE THEORY, The manual of trade theory consists of theoretical information for the 1st Year course of the Electronic, Mechanic Trade. The contents are sequenced according to the practical exercise contained in the manual, on Trade practical. Attempt has been made to relate the theoretical aspects with the skill covered in each, exercise to the extent possible. This co-relation is maintained to help the trainees to develop the, perceptional capabilities for performing the skills., The Trade Theory has to be taught and learnt along with the corresponding exercise contained in the manual, on trade practical. The indicating about the corresponding practical exercise are given in every sheet of this, manual., It will be preferable to teach/learn the trade theory connected to each exercise atleast one class before, performing the related skills in the shop floor. The trade theory is to be treated as an integrated part of each, exercise., The material is not the purpose of self learning and should be considered as supplementary to class room, instruction., , (vi), , Copyright Free, Under CC BY Licence

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CONTENTS, Exercise No., , Title of the Exercise, , Page No., , Module 1: Basic Workshop Practice, 1.1.01, , Visit various sections of the ITI and identify the location of various, installations, , 1, , 1.1.02, , Identify safety signs for danger, warning, caution & personal safety message, , 2, , 1.1.03, , Use of Personal Protective Equipment (PPE), , 5, , 1.1.04, , Practice elementary first aid, , 6, , 1.1.05, , Preventive measures for electrical accidents & steps to be taken in such, accidents, , 9, , 1.1.06, , Use of fire extinguishers, , 10, , 1.1.07, , Identify the different hand tools, , 11, , 1.1.08, , Selection of proper tools for operation and precautions in operation, , 12, , 1.1.09, , Care & maintenance of trade tools, , 13, , 1.1.10, , Practice safety precautions while working in fitting jobs, , 14, , 1.1.11, , Workshop practice on filing and hacksawing, , 15, , 1.1.12, , Practice simple sheet metal works, fitting and drilling, , 16, , 1.1.13, , Make an open box from metal sheet, , 17, , Module 2: Basics of AC and Electrical Cables, 1.2.14, , Identify the phase, neutral and earth on power socket use testers to monitor, AC power, , 18, , 1.2.15, , Construct a test lamp and use it to check mains healthiness, , 19, , 1.2.16, , Measure the voltage between phase and ground and rectify earthing, , 20, , 1.2.17, , Identify and test different AC mains cables, , 21, , 1.2.18, , Prepare terminations, skin the electrical wires / cables using wire stripper, and cutter, , 23, , 1.2.19, , Measure the gauge of the wire using SWG and outside micrometer, , 27, , 1.2.20, , Refer table and find current carrying capacity of wires, , 30, , 1.2.21, , Crimp the lugs to wire end, , 32, , Module 3: Single Range Meters, 1.3.22, , Measure AC and DC voltages using multimeter, , 34, , 1.3.23, , Identify the type of meters by dial and scale marking / symbols, , 36, , 1.3.24, , Demonstrate various analog measuring instruments, , 38, , 1.3.25, , Find the minimum and maximum measurable range of the meter, , 40, , 1.3.26, , Carryout mechanical zero setting of a meter, , 41, , (vii), , Copyright Free, Under CC BY Licence

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Exercise No., , Title of the Exercise, , Page No., , 1.3.27, , Check the continuity of wires, meter probes and fuse etc, , 43, , 1.3.28, , Measure voltage and current using clamp meter, , 45, , Module 4: Cells & Batteries, 1.4.29, , Identify the +ve and -ve terminals of the battery, , 48, , 1.4.30, , Identify the rated output voltage and AH capacity of given battery, , 49, , 1.4.31, , Measure the voltages of the given cells/battery using analog/digital, multimeter, , 50, , 1.4.32, , Charge and discharge the battery through load resistor, , 52, , 1.4.33, , Maintain the secondary cells, , 55, , 1.4.34, , Measure the specific gravity of electrolyte using hydrometer, , 57, , 1.4.35, , Test a battery and verify whether the battery is ready for use or needs, recharging, , 58, , Module 5: AC & DC Measuring Instruments, 1.5.36, , Use the multimeter to measure various functions (AC V, DC V, AC I,, DC I, R), , 59, , 1.5.37, , Identify the different types of meter for measuring AC & DC parameters, , 62, , 1.5.38, , Identify the different controls on the CRO front panel and observe the function, of each control, , 63, , 1.5.39, , Measure VDC, VAC, time period using CRO sine wave Parameters, , 65, , 1.5.40, , Identify the different controls on the function generator front panel and, observe the function of each controls, , 67, , Module 6: Soldering/Desoldering and various switches, 1.6.41, , Practice soldering on different electronic components, small transformer, and lugs, , 69, , 1.6.42, , Practice soldering IC bases on PCBs, , 71, , 1.6.43, , Practice desoldering using pump and wick, , 73, , 1.6.44, , Join the broken PCB track and test, , 75, , 1.6.45, , Identify and use SPST, SPDT, DPST DPDT,tumbler. push button, toggle ,, piano switches used in electronic industries, , 76, , Make a panel board using different types of switches for a given application, , 78, , 1.6.46, , Module 7: Active and Passive Components, 1.7.47, , Identify the different types of active electronics components, , 79, , 1.7.48, , Measure the resistor value by colour code and verify the same by measuring, with multimeter, , 80, , 1.7.49, , Identify resistors by their appearance and check physical defects, , 82, , 1.7.50, , Identify the power rating of carbon resistors by their size, , 83, , (viii), , Copyright Free, Under CC BY Licence

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Exercise No., 1.7.51, 1.7.52, 1.7.53, , Title of the Exercise, , Page No., , Practice on measurement of parameters in combinational electrical circuit, by applying Ohm’s Law for different resistor values and voltage sources, , 84, , Measurement of current and voltage in electrical circuits to verify, Kirchhoff’s Law, , 86, , Verify laws of series and parallel circuits with voltage source in different, combinations, , 88, , Measure the resistance, voltage, current through series and parallel, connected network using multimeter, , 89, , 1.7.55, , Identify different Inductors and measure the values using LCR meter, , 91, , 1.7.56, , Identify the different capacitors and measure capacitance of various, capacitors using LCR meters, , 92, , 1.7.57, , Identify and test the circuit breaker and other protecting devices, , 93, , 1.7.58, , Dismantle and identify the different parts of a relay, , 94, , 1.7.59, , Connect a timer relay in a circuit and test for its working, , 95, , 1.7.60, , Connect a contactor in a circuit and test for its working, , 96, , 1.7.61, , Construct and test RC time constant circuit, , 97, , 1.7.62, , Construct a RC differentiator circuit and convert triangular wave into, square wave, , 98, , Construct and test series and parallel resonance circuit, , 100, , 1.7.54, , 1.7.63, , Module 8: Power Supply Circuits, 1.8.64, , Identify different types of diode, diodes, modules and their specifications, , 102, , 1.8.65, , Test the given diode using multimeter and determine forward to reverse, resistance ratio, , 103, , Measure the voltage and current through a diode in a circuit and verify its, forward characteristics, , 104, , 1.8.67, , Identify different types of transformers and test, , 105, , 1.8.68, , Identify the primary and secondary windings of transformer and test, the polarity, , 106, , 1.8.69, , Construct and test a Half-wave, Full wave and Bridge rectifier circuit, , 107, , 1.8.70, , Measure ripple voltage, ripple frequency and ripple factor of rectifiers for, different load and filter capacitors, , 110, , 1.8.71, , Identify and test zener diode, , 111, , 1.8.72, , Construct and test zener diode based voltage regulator circuit, , 112, , 1.8.73, , Calculate the percentage regulation of regulated power supply, , 113, , 1.8.66, , Module 9: Computer Hardware, OS,MS Office and Networking, 1.9.74, 1.9.75, , Identify various indicators, cables, connectors and ports on the computer, cabinet, , 114, , Demonstrate various parts of the system unit and motherboard components, , 119, , (ix), , Copyright Free, Under CC BY Licence

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Exercise No., , Title of the Exercise, , Page No., , 1.9.76, , Identify various computer peripherals and connect it to the system, , 121, , 1.9.77, , Disable certain functionality by disconnecting the concerned cables, SATA / PATA, , 123, , 1.9.78, , Replace the CMOS battery and extend a memory module, , 124, , 1.9.79, , Test and replace the SMPS, , 126, , 1.9.80, , Replace the given DVD and HDD on the system, , 127, , 1.9.81, , Dismantle and assemble the desktop computer system, , 129, , 1.9.82, , Boot the system from different options, , 130, , 1.9.83, , Install OS in a desktop computer, , 132, , 1.9.84, , Install a printer driver software and test for print outs, , 134, , 1.9.85, , Install antivirus software, scan the system and explore the options in the, antivirus software, , 138, , 1.9.86, , Install MS Office Software, , 140, , 1.9.87, , Create folder and files, draw pictures using paint, , 141, , 1.9.88, , Explore different menu/tool/format/status bars of MS word and practice, the options, , 144, , Explore different menu/tools/format/status bars of MS Excel and practice, the options, , 148, , Prepare power point presentation on any three known topics with various, design, animation and visual effects, , 151, , 1.9.91, , Convert the given PDF File into Word file using suitable software, , 153, , 1.9.92, , Browse search engines, create email accounts, practice sending and, receiving of mails and configuration of email clients, , 156, , Identify different types of cables and network components e.g. Hub, switch,, router, modem etc, , 161, , 1.9.94, , Prepare terminations, make UTP and STP cable connectors and test, , 163, , 1.9.95, , Connect network connectivity hardware check for its functioning, , 166, , 1.9.96, , Configure a wireless Wi-Fi network, , 169, , 1.9.89, 1.9.90, , 1.9.93, , Module 10: IC Regulators, 1.10.97, , Construct and test a +12V fixed voltage regulator using 3 terminal regulator IC, , 171, , 1.10.98, , Identify the different types of fixed +ve and -ve regulator ICs and the different, current ratings, , 173, , 1.10.99, , Identify different heat sinks for IC based regulators, , 174, , 1.10.100, , Observe the output voltage of different IC 723 metal / plastic type and, IC 78S40 regulators by varying the input voltage with fixed load, , 175, , Construct and test a 1.2V to 30V variable output regulated power supply, using IC LM317T, , 177, , 1.10.101, , (x), , Copyright Free, Under CC BY Licence

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LEARNING / ASSESSABLE OUTCOME, On completion of this book you shall be able to, • Perform basic workshop operations using suitable tools for fitting,, riveting, drilling etc. observing suitable care & safety., • Select and perform electrical/electronic measurement of single, range meters and calibrate the instrument., • Test & service different batteries used in electronic applications, and record the data to estimate repair cost., • Plan and execute soldering & desoldering of various electrical, components like switches, PCB & Transformers for electronic, circuits., • Test various electronic components using proper measuring, instruments and compare the data using standard parameters., • Assemble simple electronic power supply circuit and test for, functioning., • Install, configure, interconnect given computer system (s) and, demonstrate & utilize application packages for different, applications., , (xi), , Copyright Free, Under CC BY Licence

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SYLLABUS, 1st Year (Volume I of II), Week, No., , Ref. Learning, Outcome, , Duration: Six Month, Professional Skills, (Trade Practical), with Indicative hours, , Professional Knowledge, (Trade Theory), , 1, , Apply safe working Trade and Orientation, practices, 1 Visit to various sections of the institute, and identify location of various, installations. (5 hrs), 2 Identify safety signs for danger, warning,, caution & personal safety message., (3 hrs.), 3 Use of personal protective equipment, (PPE). (5 hrs), 4 Practice elementary first aid. (5 hrs), 5 Preventive measures for electrical, accidents & steps to be taken in such, accidents. (2 hrs), 6 Use of Fire extinguishers. (5 hrs), , Familiarization with the working, of Industrial Training Institute, system., Importance of safety and precautions, to be taken in the industry/shop floor., Introduction to PPEs., Introduction to First Aid., Response to emergencies e.g. power, failure, fire, and system failure., Importance of housekeeping & good, shop floor practices., Occupational Safety & Health:, Health, Safety and Environment, guidelines, legislations & regulations, as applicable., , 2-3, , Perform, basic Hand tools and their uses, workshop operations 7 Identify the different hand tools. (5 hrs), using suitable tools for 8 Selection of proper tools for operation and, fitting, riveting, drilling, precautions in operation. (7 hrs), etc observing suitable 9 Care & maintenance of trade tools., care & safety, (8 hrs), 10 Practice safety precautions while working, in fitting jobs. (10 hrs), 11 Workshop practice on filing and hacks, awing. (5 hrs), 12 Practice simple sheet metal works, fitting, and drilling. (5 hrs), 13 Make an open box from metal sheet., (10 hrs), , Identification, specifications, uses, and maintenance of commonly used, hand tools., State the correct shape of files for, filing different profiles., Riveting of tags and lugs, cutting and, bending of sheet metals, chassis and, cabinets., , 4-5, , Select and perform Basics of AC and Electrical Cables, electrical/ electronic, 14 Identify the Phase, Neutral and Earth on, measurement of single, power socket, use a testers to monitor, range meters and, AC power. (6 hrs), calibrate, the 15 Construct a test lamp and use it to check, instrument., mains healthiness. (7 hrs), 16 Measure the voltage between phase and, ground and rectify earthing. (5 hrs), 17 Identify and test different AC mains, cables. (7 hrs), 18 Prepare terminations, skin the electrical, wires /cables using wire stripper and, cutter. (7 hrs), 19 Measure the gauge of the wire using, SWG and outside micrometer. (5 hrs), 20 Refer table and find current carrying, capacity of wires. (3 hrs), 21 Crimp the lugs to wire end. (5 hrs), 22 Measure AC and DC voltages using multi, meter. (5 hrs), , Identification, specifications, uses, and maintenance of commonly used, hand tools., State the correct shape of files for, filing different profiles., Riveting of tags and lugs, cutting and, bending of sheet metals, chassis and, cabinets., , (xii), , Copyright Free, Under CC BY Licence

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6, , Select and perform 23 Identify the type of meters by dial and, electrical/ electronic, scale marking/ symbols. (3 Hrs), measurement of 24 Demonstrate various analog measuring, single range meters, Instruments. (3 Hrs), and calibrate the 25 Find the minimum and maximum, instrument., measurable range of the meter. (3 Hrs), 26 Carryout mechanical zero setting of a, meter. (5 Hrs), 27 Check the continuity of wires, meter, probes and fuse etc. (5 Hrs), 28 Measure voltage and current using clamp, meter. (6 Hrs), , Single range meters, Introduction to electrical and electronic, measuring instruments. Basic principle, and parts of simple meters., Specifications, symbols used in dial and, their meaning., , 7, , Test & service Cells & Batteries, different batteries 29 Identify the +ve and -ve terminals of the, used in electronic, battery. (2 hrs), applications and 30 Identify the rated output voltage and Ah, record the data to, capacity of given battery. (1 hrs), estimate repair cost. 31 Measure the voltages of the given cells/, battery using analog/ digital multimeter., (3 hrs), 32 Charge and discharge the battery through, load resistor. (5 hrs), 33 Maintain the secondary cells. (5 hrs), 34 Measure the specific gravity of the, electrolyte using hydrometer. 3 hrs), 35 Test a battery and verify whether the, battery is ready for use of needs, recharging. (6 hrs), , Cells & Batteries, Construction, types of primary and, secondary cells. Materials used,, Specification of cells and batteries., Charging process, efficiency, life of cell/, battery., Selection of cells / Batteries etc. Use of, Hydrometer., Types of electrolytes used in cells and, batteries., Series/ parallel connection of batteries, and purpose of such connections., , 8-9, , Test, various AC & DC measurements, electronic compo- 36 Use the multi meter to measure the, nents using proper, various functions (AC V, DC V, DC I, AC, m e a s u r i n g, I, R) (8 hrs.), instruments and 37 Identify the different types of meter for, compare the data, measuring AC & DC parameters (8 hrs.), using, standard 38 Identify the different controls on the CRO, parameter., front panel and observe the function of, each control (12hrs.), 39 Measure DC voltage, AC voltage, time, period using CRO sine wave parameters, (10hrs.), 40 Identify the different controls on the, function generator front panel and observe, the function of each controls (12 hrs.), , Introduction to electrical measuring, instruments., Importance and classification of meters., Forces necessary to work a meter. MC, and MI meters., Range extension, need of calibration., Characteristics of meters and errors in, meters., Multi meter, use of meters in different, circuits., Care and maintenance of meters. Use, of CRO, Function generator, LCR meter, , 10, , Plan and execute, Soldering/ De-soldering and Various, soldering, & Switches, desoldering of various 41 Practice soldering on different electronic, electrical compo components, small transformer and lugs., nents like Switches,, (5 hrs), PCB & Transformers 42 Practice soldering on IC bases and, for electronic circuits., PCBs. (5 hrs), 43 Practice de-soldering using pump and, wick (2 hrs), 44 Join the broken PCB track and test, (3 hrs), , Different types of soldering guns, related, to Temperature and wattages, types of, tips., Solder materials and their grading. Use, of flux and other materials. Selection of, soldering gun for specific requirement., Soldering and De-soldering stations and, their specifications. Different switches,, their specification and usage., , (xiii), , Copyright Free, Under CC BY Licence

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45 Identify and use SPST, SPDT, DPST,, DPDT, tumbler, push button, toggle, piano, switches used in electronic industries (5, hrs), 46 Make a panel board using different types, of switches for a given application (5 hrs), 11-13, , Test, various Active and Passive Components, electronic compo- 47 Identify the different types of active, nents using proper, electronic components. (3 hrs)., m e a s u r i n g 48 Measure the resistor value by colour code, instruments and, and verify the same by measuring with, compare the data, multimeter (3 hrs), using standard 49 Identify resistors by their appearance and, parameter., check physical defects. (2 hrs), 50 Identify the power rating of carbon resistors, by their size. (3 hrs), 51 Practice on measurement of parameters, in combinational electrical circuit by, applying Ohm’s Law for different resistor, values and voltage sources. (9 hrs), 52 Measurement of current and voltage in, electrical circuits to verify Kirchhoff’s Law, (5 Hrs), 53 Verify laws of series and parallel circuits, with voltage source in different, combinations. (5 hrs), 54 Measure the resistance, Voltage, Current, through series and parallel connected, networks using multi meter (8 hrs), 55 Identify different inductors and measure the, values using LCR meter (5 hrs), 56 Identify the different capacitors and, measure capacitance of various, capacitors using LCR meter (5 hrs), 57 Identify and test the circuit breaker and, other protecting devices. (5 hrs), 58 Dismantle and identify the different parts, of a relay. (5 hrs), 59 Connect a timer relay in a circuit and test, for its working. (3 hrs), 60 Connect a contactor in a circuit and test, for its working (2 hrs), 61 Construct and test RC time constant circuit, (4 hrs), 62 Construct a RC differentiator circuit and, convert triangular wave into square wave, (5 hrs.), 63 Construct and test series and parallel, resonance circuit (3 hrs), , Ohm’s law and Kirchhoff’s Law., Resistors; types of resistors, their, construction & specific use, color, coding, power rating., Equivalent Resistance of series parallel, circuits., Distribution of V & I in series parallel, circuits., Principles of induction, inductive, reactance., Types of inductors, construction,, specifications, applications and energy, storage concept., Self and Mutual induction., Behaviour of inductor at low and high, frequencies., Series and parallel combination, Q, factor., Capacitance, and, Capacitive, Reactance, Impedance., Types of capacitors, construction,, specifications and applications., Dielectric constant., Significance of Series parallel, connection of capacitors., Capacitor behaviour with AC and DC., Concept of Time constant of a RC, circuit., Concept of Resonance and its, application in RC, RL & RLC series and, parallel circuit., Properties of magnets and their, materials, preparation of artificial, magnets, significance of electro, magnetism, types of cores., Relays, types, construction and, specifications etc., , 14-15, , Assemble simple Power Supply Circuits, electronic power 64 Identify different types of diodes, diode, supply circuit and, modules and their specifications. (5 hrs), test for functioning. 65 Test the given diode using multi meter and, determine forward to reverse resistance, ratio. (5 hrs), , Semiconductor materials, components,, number coding for different electronic, components such as Diodes and Zeners, etc., PN Junction, Forward and Reverse, biasing of diodes., Interpretation of diode specifications., , (xiv), , Copyright Free, Under CC BY Licence

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16-20, , 66 Measure the voltage and current through, a diode in a circuit and verify its forward, characteristic. (8 hrs), 67 Identify different types of transformers and, test. (3 hrs), 68 Identify the primary and secondary, transformer windings and test the polarity, (2 hrs), 69 Construct and test a half wave, full wave, and Bridge rectifier circuit. (10 hrs), 70 Measure ripple voltage, ripple frequency, and ripple factor of rectifiers for different, load and filter capacitors. (5 hrs), 71 Identify and test Zener diode. (2 hrs), 72 Construct and test Zener based voltage, regulator circuit. (5 hrs), 73 Calculate the percentage regulation of, regulated power supply. (5 hrs), , Forward current and Reverse voltage., Packing styles of diodes., Different diodes, Rectifier configurations,, their efficiencies, Filter components and, their role in reducing ripple., Working principles of Zener diode,, varactor diode, their specifications and, applications., Working principle of a Transformer,, construction, Specifications and types, of cores used., Step-up, Step down and isolation, transformers with applications., Losses in Transformers., Phase angle, phase relations, active and, reactive power, power factor and its, importance., , Install, configure,, Computer Hardware, OS, MS office and, interconnect given Networking, computer system 74 Identify various indicators, cables,, (s) and demonsconnectors and ports on the computer, trate & utilize, cabinet. (5 hrs), a p p l i c a t i o n 75 Demonstrate various parts of the system, packages, for, unit and motherboard components. (5 hrs), d i f f e r e n t 76 Identify various computer peripherals and, application., connect it to the system. (5 hrs), 77 Disable certain functionality by, disconnecting the concerned cables, SATA/ PATA. (5 hrs), 78 Replace the CMOS battery and extend a, memory module. (5 hrs), 79 Test and Replace the SMPS (5 hrs), 80 Replace the given DVD and HDD on the, system (5 hrs), 81 Dismantle and assemble the desktop, computer system. (10 hrs), 82 Boot the system from Different options, (5 hrs), 83 Install OS in a desktop computer. (5 hrs), 84 Install a Printer driver software and test, for print outs (5 hrs), 85 Install antivirus software, scan the system, and explore the options in the antivirus, software. (5 hrs), 86 Install MS office software (5 hrs), 87 Create folder and files, draw pictures using, paint. (5 hrs), 88 Explore different menu/ tool/ format/ status, bars of MS word and practice the options., (8 hrs), 89 Explore different menu/ tool/ format/ status, bars of MS excel and practice the options., (7 hrs), 90 Prepare power point presentation on any, three known topics with various design,, animation and visual effects. (5 hrs), , Basic blocks of a computer,, Components of desktop and, motherboard., Hardware and software, I/O devices, and, their working., Different types of printers, HDD, DVD., Various ports in the computer. Windows, OS, MS widows: Starting windows and its, operation, file management using, explorer, Display & sound properties,, screen savers, font management,, installation of program, setting and using, of control panel., application of, accessories, various IT tools and, applications., Concept of word processing,: MS word, – Menu bar, standard tool bar, editing,, formatting, printing of document etc., Excel – Worksheet basics, data entry, and formulae. Moving data in worksheet, using tool bars and menu bars,, Formatting and calculations, printing, worksheet, creating multiple work, sheets, creating charts., Introduction to power point Basics of, preparing slides, different design, aspects of slides, animation with slides, etc., Concept of Internet, Browsers,, Websites, search engines, email,, chatting and messenger service., Downloading the Data and program files, etc., , (xv), , Copyright Free, Under CC BY Licence

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21, , 22-23, , 91 Convert the given PDF File into Word file, using suitable software. (5 hrs), 92 Browse search engines, create email, accounts, practice sending and receiving, of mails and configuration of email clients., (5 hrs), 93 Identify different types of cables and network, components e.g. Hub, switch, router,, modem etc. (5 hrs), 94 Prepare terminations, make UTP and STP, cable connectors and test. (5 hrs), 95 Connect network connectivity hardware and, check for its functioning. (5 hrs), 96 Configure a wireless Wi-Fi network (5 hrs), , Computer Networking:Network features - Network medias, Network topologies, protocols- TCP/IP,, UDP, FTP, models and types., Specification and standards, types of, cables, UTP, STP, Coaxial cables., Network components like hub, Ethernet, switch, router, NIC Cards, connectors,, media and firewall., Difference between PC & Server., , IC Regulators, 97 Construct and test a +12V fixed voltage, regulator. (5 hrs), 98 Identify the different types of fixed +ve and, –ve regulator ICs and the different current, ratings (78/79 series) (5 hrs), 99 Identify different heat sinks for IC based, regulators. (2 hrs), 100 Observe the output voltage of different IC, 723 metal/ plastic type and IC 78S40, regulators by varying the input voltage with, fixed load (8 hrs), 101 Construct and test a 1.2V – 30V variable, output regulated power supply using IC, LM317T. (5 hrs), , Regulated Power supply using 78XX, series, 79XX series., Op-amp regulator, 723 regulator,, (Transistorized & IC based)., Voltage regulation, error correction and, amplification etc., , Assemble simple, electronic power, supply circuit and, test for functioning., , Project work / Industrial visit, Broad areas:, 1 Full wave Voltage rectifier with indicator., 2 Transformer less 12 V dual power supply, 3 Versatile regulated power supply, 4 AC/DC voltage tester., 5 Modular rectifiers., 6 Half wave dual power supply with zener diode., , 24-25, , Revision, , (xvi), , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.01, , Visit various sections of the ITI and identify the location of various installations, Objective: At the end of this exercise you shall be able to, • list the trades available at the ITI, • identify the staff and their designations, • draw the layout of the Electronics Mechanic laboratory, • identify the location of power room and switch controls., , Requirements, Tools/Equipments/Instruments, •, •, , Trainees Tool kit, Steel rule, 300 mm, , Materials/Components, - 1 Set, - 1 No, , •, •, •, , Pencil HB, Eraser, Drawing sheet - A 4 size, , - 1 No, - 1 No, - 3 Nos, , PROCEDURE:, TASK 1: Visiting various sections of ITI and identification of Trades., Instructor has to lead the trainees to visit, various sections of the ITI., 1 Follow the Instructor, identify each section, name of, the staff member, designation and record them in, Table - 1, Table - 1, Sl, No, , Name of the, section /Trade, , Staff, member, , Designation, , Phone, number, , 1, 2, , 2 Collect the telephone numbers of ITI office, nearest, hospital, police station, fire station and record them in, Table - 2, Table - 2, Sl No., , Place, , 1, , ITI office, , 2, , Hospital, , 3, , Police station, , 4, , Fire station, , Phone No, , Remarks, , The Instructor may add column for any, important aspect if required in Table - 2, , 3, , 3 Get the work checked by the Instructor., , TASK 2: Drawing the layout of E.M. laboratory / Section and identification of control switches, 1 Draw the plan of EM laboratory / section to a suitable, scale in drawing sheet., 2 Identify the location of AC mains power control / back, - up power, distribution board, MCB and lighting switch, controls., , Instructor may help them to operate the, important switches in case of any emergency, situation., 4 Get the work checked by the Instructor., , 3 Mark the locations of the above points on the plan, drawing / diagram., , 1, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.02, , Identify safety signs for danger, warning, caution & personal safety message, Objective: At the end of this exercise you shall be able to, • identify different types of safety signs., • prepare safety sign boards., , Requirements, Tools/Equipments/Instruments, •, •, , Materials/Components, , Trainees Tool Kit, Scissors, , - 1 Set, - 1 No, , •, •, •, •, •, •, •, •, , Aids: Wall chart showing all types of safety, signs as per the trade syllabus., , Pencil - HB, Eraser, Drawing Sheet - A 4 size, Colour Sketch Pen, Cardboard, Gum, Twine Thread, Geometry Box, , The instructor has to arrange for various types, of safety signs with label number for each one., , PROCEDURE, TASK 1: Identification of different safety signs, Identify the labelled safety sign, record type of safety sign, and the meaning in Table 1., Table 1, Label, No., , Sign, , Type, , 1, , 2, , 3, , 4, , 2, , Copyright Free, Under CC BY Licence, , Meaning, , - 1 No, - 1 No, - 5 Nos, - 1 Set, - 1 No, - 1 No, - 1 Roll, - 1 No

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Label No., , Sign, , Type, , Meaning, , 5, , 6, , 7, , 8, , 9, , 10, , 11, , 12, , 13, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.1.02, , Copyright Free, Under CC BY Licence, , 3

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Label No., , Sign, , Type, , Meaning, , 14, , 15, , 16, , 17, , 18, , 2 Get the work checked by the Instructor., , TASK 2: Preparation of safety sign boards, 1 Draw the free hand sketch of warning sign on A4 sheet, using geometry box., , 6 Make a small hole, insert the thread and tie it to hang, the prepared safety sign board as shown in Fig 1., , 2 Use sketch pens and apply appropriate colours,, finalise the diagram., 3 Cut along the outside line of the prepared diagram, using scissors., 4 Keep the safety sign diagram on the card board, mark, along the outside line using pencil and cut the excess, portion., 5 Paste the prepared safety sign diagram on the card, board using gum and allow it to dry up., , 4, , 7 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.1.02, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.03, , Use of Personal Protective Equipment (PPE), Objective: At the end of this exercise you shall be able to, • state the use of different PPEs, , Requirements, Tools/Equipments/Instruments, •, , Trainees tool kit, Aids:, Chart showing all types of, PPE items, , Materials/Components, - 1 Set, - 1 No, , •, •, •, •, , Pencil, Eraser, Drawing sheet, Colour Sketch pen, , - 1 No, - 1 No, - 1 No, - 1 Set, , The Instructor has to arrange a minimum of, Five PPE items and label them before issuing to, trainees., , PROCEDURE, TASK 1: Stating the use of different PPEs, 1 Identify the labelled PPE item and record the details of, about name type of protection and uses in Table - 1., each Personal protective Equipment in column- 3 to 5, Table - 1, Label No., , Sign, , Name, , Type of Protection, , Uses, , 1, , 2, , 3, , 4, , 5, , 6, , 2 Get the work checked by the Instructor., 5, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.04, , Practice elementary first aid, Objective: At the end of this exercise you shall be able to, • study and practice on first aid Artificial respiration., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, , Rubber mat., Wall chart on Artificial respiration, practice, Audio Visual Aids: video film on, Artificial respiration, , - 1 No, , •, , Dry wooden stick, , - 1 No, , - as reqd, - as reqd, , PROCEDURE, TASK 1: Providing First-aid to the Victim, 1 Put the main switch to OFF so as to release the victim, from live line contact. Increase of difficulty to reach, the main switch release the victim by means of a, wooden stick / rubber item etc. while keeping yourself, isolated from the “Earth” contact., 2 If the victim is unconscious or blisters (Burns) have, developed on his/her body then call a doctor through, telephone or through some one else but do not leave, the victim., 3 Start the following first-aid procedure till the doctor is, available:, , i, , Loosen or remove victim’s shoes, cloths etc. But, take care that the blisters (Burns) do not break., , ii Cover victim’s body by using a blanket so as to, keep him/her warm., iii If the victim’s breathing appears to be suppressed, then remove the crowd from his / her surroundings., If the victim is in a room then open up all doors, and windows so as to enable him / her to breath in, fresh air., 4 Remove artificial teeth, tobacco etc. from the victim’s, mouth and start artificial respiration procedure, (suitable) for restoring normal breathing., , TASK 2: Providing Artificial Respiration, a HOLGEN-NELSON’S method, •, , Nelson's arm-lift back pressure method, must not be used in case of suspected, injuries to the chest wall or abdomen of, the victim., • Be brisk in carrying out this method but, avoid violent operations which may cause, injury to the internal parts of the victim., 1 As shown in the Fig 1 place the victim face down with, his arms folded, palms one over the other and head, resting on his cheek over the palms. Kneel on one or, both knees at the victim's hand. Place your hands on, the victim's back beyond the line of the armpits. Spread, your fingers outwards and downwards with the thumbs, just touching each other., , 4 Now rock backwards. As you rock backwards, gently, raise and pull the victim's arms towards you as shown, in figure until you feel tension in his shoulders. Remain, in this position for a few seconds. To complete the, cycle, lower the victim's arm and move your hands up, to the initial position., 5 Repeat the cycles a few more times by following steps, 3 to 6., , 2 As shown in the Fig 2 gently rock forward the arms, keeping them straight until they are nearly vertical,, and thus steadily pressing the victim's back as shown, to force the air out of the victim's lungs., 3 Synchronising the above movement rock backwards, sliding your hands downwards along the victim's arms., Grasp his arm just above the elbows as shown in, Fig 3., 6, , Copyright Free, Under CC BY Licence

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3 With the arms held straight, swing forward slowly so, that the weight of your body is gradually applied on, the lower ribs of the victim as shown in figure. This, weight forces the air out of the victim's lungs., 4 Now swing backward immediately removing all, pressure on the lower ribs. This allows the lungs to, get filled with air., 5 After 2 to 3 seconds, swing forward again and repeat, the cycle (from step 4 to 5) twelve to thirteen times in, a minute., , c Mouth-to-Mouth Process (method), • Be brisk in carrying out this method but, avoid violent, operations which may, cause injury to the internal parts of the, victim., 1 Remove loose dentures or other obstructions from the, mouth. Make sure that the victim's nose and mouth, are clear., 2 Lay the victim flat on his back. Place a roll of clothing, under his shoulders such that his head is thrown well, back as shown in Fig 7., , b SCHAFER'S method:, • Do not use this method of artificial, respiration in case the victim has injuries, on his chest or abdomen., • Be brisk in carrying out this method but, avoid violent operations which may cause, injury to the internal parts of the victim., 1 Lay the victim on his abdomen. Extend one arm, directly forward, and the other arm bent at the elbow, as shown in Fig 5. Keep the face turned sidewise and, resting on the hand or forearm as shown in Fig 5., 2 Kneel astride the victim as shown in Fig 6 such that, his thighs are in between your knees. Position your, fingers and thumb as shown in figure., , 3 Tilt the victim's head back so that the chin points, straight upward., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.1.04, , Copyright Free, Under CC BY Licence, , 7

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4 Grasp the victim's jaw as shown in Fig 8 and raise it, upward until the lower teeth are higher than the upper, teeth. Maintain this position throughout the artificial, respiration to prevent the tongue from blocking the air, passage., , 6 If air cannot be blown in, check the position of the, victim's head and jaw. Check the mouth for, obstructions (block). Then try again blowing air more, forcefully. If the chest still does not rise, turn the victim's, face down and strike his back sharply to dislodge, obstructions., 5 Take a deep breath and place your mouth over the, victim's mouth as shown in Fig 9 making airtight, contact. Hold the victim's nose shut with the thumb, and forefinger. Blow into the victim's mouth (gently in, the case of infants) until his chest rises. Remove your, mouth and release the hold on the victim's nose. If, you dislike direct contact, place a porous cloth between, your mouth and the victim's mouth., , 8, , 7 Let the victim exhale. Hear the out rush of air from the, victim's mouth and nose. Sometimes air enters the, victim's stomach as evidenced by a swelling stomach., Expel the air by gently pressing the stomach during, the exhalation period., 8 Repeat steps 5 and 7, eight to ten times rapidly. Then, slow down to 10-20 times a minute. (20 times for, infant). Sometimes it may take hours for the victim to, breathe normally. Continue giving artificial respiration, till he recovers., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.1.04, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.05, , Preventive measures for electrical accidents & steps to be taken in such, accidents, Objectives: At the end of this exercise you shall be able to, • prevent electrical accidents, • following the steps to be taken in electrical accidents., , PROCEDURE, TASK 1: Prevention of electrical accidents, 1 Keep the work area clean., 2 Use licensed electrical and electronics items only., 3 Ensure that before touching the body of equipment, there is no leakage of electric current in it., 4 Before starting the maintenance or repair work on any, equipment, either disconnect it from the mains supply, or keep yourself isolated from the earth contact by, using rubber shoes, rubber matting or dry-wooden, board/stool., , 9 Always discharge high voltage filter capacitors after, opening the equipment and before starting repairs by, short circuiting the capacitor terminals with a piece of, thick wire., 10 Keep yourself away from the Extra High Tension (EHT), points while the TV receiver is "ON" because 12KV to, 25KV EHT remains present on the picture tube and, the same can give you a severe electric shock., , necessary instruments, circuits, etc. and arrange them, on the table as per the sequence of requirement., , 11 Always use a 25 Watts or 35 Watts soldering iron while, working on a Printed Circuit Board (PCB). The use of, more wattage soldering iron can damage the PCB line, as well the component., , 7 Select proper insulated tools for the job, clean and, restore the same to its place after use., , 12 Replace or remove fuses only after switching OFF, the circuit / equipment., , 6, , 8 Always disconnect the equipment to be repaired from, the mains line by pulling the plug-top and not by pulling, the power cord., TASK 2: Steps to be taken during the occasion of electrical accidents, 1 Do not touch the victim or the equipment/appliance, which is under accident., 2 Unplug the equipment/appliance or turn OFF the, mains power., 3 In case you can't turn off the power, use a piece of, wood, like a broom handle, dry rope or dry clothing, to, separate the victim from the live line., 4 Call the doctor immediately. Even if the victim's, breathing and heartbeats have recovered, do not delay, in calling a doctor for a check-up and treatment., , 6 If the victim is not breathing, apply mouth-to-mouth, resuscitation. If the victim has no pulse, begin, cardiopulmonary resuscitation (CPR). Then cover the, victim with a blanket to maintain body heat, keep the, victim's head low and get medical attention., 7 After the victim has recovered, keep the victim warm, with blanket, wrapped up with hot water bags., Stimulate circulation by stroking the inside of the arms, and legs towards the heart., 8 Do not give the victim any stimulant such as coffee,, tea etc., until he is fully conscious., , 5 Keep the victim lying down; Unconscious victim should, be placed on their side to allow any fluid coming out, from mouth to drain., , 9, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.06, , Use of fire extinguishers, Objectives: At the end of this exercise you shall be able to, • identify the types of fire, • select the proper type of fire extinguisher, • use of the fire extinguishers., , Requirements, Tools/Equipments/Instruments, •, •, , Materials/Components, , Trainees tool kit, Different type of Fire extinguishers, , - 1 Set, - 1 No, (each), , •, •, , Scrap material like Wood / Wire, pieces/Oil/Cotton cloth, Match Box, , - 1 kg, - 1 No, , PROCEDURE, TASK 1: Identification of types of Fire and Fire Extinguisher to be used, 1 If an electrical system begins sparking or a fire ignites, at a wire, appliance, or outlet, then cutting the power, to the system is the first as well as best step to take., 2 Identify the type of fire like Class-A (Wood, paper, cloth), Class-B (Flammable Liquid & Liquefiable, solids), Class-C (Gas and liquefied gas), etc., , 3 Based on the type of fire, identify the type of fire, extinguisher is to be used like, Dry Powder Fire, Extinguisher, Foam type Fire Extinguisher,, Carbon-di-oxide Fire Extinguisher, Water Fire, Extinguisher, etc., , TASK 2: Using Procedure of Fire Extinguisher, 1 Stand with your back to an exit as shown in figure., 2 To employ the extinguisher with proper technique, just, remember the acronym "PASS.", P - Pull, A - Aim, S - Squeeze, S - Sweep, , 3 Pull the safety pin of the Fire extinguisher., 4 Aim the nozzle at the base of the fire. Hitting the tops, of the flame with the extinguisher won't be effective., 5 Squeeze the trigger. In a controlled manner, squeeze, the trigger to release the agent., 6 Sweep from side to side. Sweep the nozzle from side, to side until the fire is put out. Keep aiming at the, base while you do so. Most extinguishers will give you, about 10-20 seconds of discharge time., 7 Get the work checked by the Instructor., 10, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.07, , Identify the different hand tools, Objectives: At the end of this exercise you shall be able to, • identify the different types of hand tools, • record the specification of the hand tools., , Requirements, Tools/Equipments/Instruments, •, , Trainees tool kit, , Materials/Components, - 1 Set, , •, •, , Cotton Waste, Emery sheet, , - ½ kg, - 1 No, , PROCEDURE, •, , The Instructor has to label the tools used, for this exercise., , 3 Measure the size and record the specification of the, hand tool in the Column-3 of the table., , •, , And also arrange for tools and the required, materials from scrap for practicing the, functioning of tools., , 4 Draw the outline sketch of the hand tool in Column-4, of the table., , 1 Pick one of the labeled hand tools from the, Workbench., , 5 Repeat step-2 to 4 for the remaining hand tools., 6 Get the work checked by the Instructor., , 2 Identify and record the name of the labeled hand, tool in Table - 1., Table - 1, Label No., , Name of the Tools, , 1, , Screw Driver, , 2, , Star Screw Driver, , 3, , Line Tester, , 4, , Instrument, Screw Driver, , 5, , Long, Nose Plier, , 6, , Combination Plier, , 7, , Side Cutting Plier, , 8, , Wire Stripper, , 9, , Scriber, , 10, , Hack Saw Frame, , 11, , Ball Pein Hammer, , 12, , Chisel, , 13, , Soldering iron stand, , 14, , Soldering Iron, , 15, , De-soldering Pump, , 16, , Flat File, , 17, , Round File, , 18, , Tweezer, , 19, , Magnifying Glass, , 20, , Cleaning Brush, , 21, , Steel Rule, , Specification, , Sketch of Tool, , 11, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.08, , Selection of proper tools for operation and precautions in operation, Objectives: At the end of this exercise you shall be able to, • select proper tools for operation, • use the hand tools with precautions., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, , Trainees tool kit, Different types of tools used in, Electronics work, , - 1 Set, - 1 No, (each), , •, •, , Cotton Waste, Emery sheet, , - ½ kg, - 1 No, , PROCEDURE, The instructor has to arrange the tools and, required materials for practicing the, functioning of tools. The Instructor has to label, the tools used for this exercise., 1 Pick one of the labeled hand tools from the, Workbench., , 3 List the use/application of the tool in Column-3 of the, table., 4 Record the precautions involved while operating the, tools in Column-4 of the table., 5 Repeat step-2 to 4 for the remaining hand tools., , 6 Get the work checked by the Instructor., 2 Identify and record the name of the hand tool in, Table - 1, Table - 1, Label No., , Name of Tools, , 1, , Screw Driver, , 2, , Star Screw Driver, , 3, , Line Tester, , 4, , Instrument, Screw Driver, , 5, , Long, Nose Plier, , 6, , Combination Plier, , 7, , Side Cutting Plier, , 8, , Wire Stripper, , 9, , Scriber, , 10, , Hack Saw Frame, , 11, , Ball Pein Hammer, , 12, , Chisel, , 13, , Soldering iron stand, , 14, , Soldering Iron, , 15, , De-soldering Pump, , 16, , Flat File, , 17, , Round File, , 18, , Tweezer, , 19, , Magnifying Glass, , 20, , Cleaning Brush, , 21, , Steel Rule, , Uses/applications, , 12, , Copyright Free, Under CC BY Licence, , Precautions

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Electronics & Hardware, Electronics Mechanic- Basic Workshop Practice, , Exercise 1.1.09, , Care & maintenance of trade tools, Objective: At the end of this exercise you shall be able to, • learn and practice care and maintenance of hand tools., , Requirements, Tools/Equipments/Instruments, •, , Trainees tool kit, , Materials/Components, - 1 Set, , •, •, •, , Cotton Waste, Emery sheet, Lubricating Oil, , - ½ kg, - 1 No, - ½ Lt, , PROCEDURE:, 1 Keep the tools in a Dry Place., 2 Wipe or clean after every use with a clean and soft, cloth to remove dirt/ dust., , 11 A plier should not be used like a hammer and its, insulating cover should be preserved., 12 Never use screwdrivers as wood chisel or cold chisel., , 3 Keep all the tools in a tool room / tool rack., , 13 Steel wires should not be cut with a side cutter., , 4 Store power tools in their original cases., , 14 A neon tester should not be used as a screw driver., , 5 Apply the recommended appropriate oil to prevent the, tools from rusting., , 15 A knife should not be used for cutting wires. It should, be used only for scrapping the insulation of wires., , 6 Use silica gel packs, , 16 A hacksaw blade should be well tight in its frame and, it should cut the metal in its forward stroke., , 7 Do not use knife, screw driver, hammer etc., without, a handle. A tool without a handle should not be used., 8 While giving a tool to another person, always give it, through its handle side., 9 During rainy season, fine layer of oil or grease should, be applied to the appropriate metallic parts of tools., 10 If a layer of oil or grease is present at the handle of a, tool then it should be cleaned off first with a piece of, cloth soaked in kerosene oil or petrol, and then the, same should be used., , 17 Before using a drilling machine, check that the drill bit, is properly tighten., 18 Do not use a soldering iron of more than 15 to 25, watts while working on a circuit containing transistors, and ICs., 19 Keep the soldering iron's bit clean and maintain its, shape., 20 Use plastic and Bakelite screw drivers for the, 'Alignment' job of a radio or TV receiver., , 13, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic- Basic Workshop Practice, , Exercise 1.1.10, , Practice safety precautions while working in fitting jobs, Objective: At the end of this exercise you shall be able to, • state and practice safety precautions while working in fitting jobs., , Requirements, Tools/Equipments/Instruments, •, , Materials/Components, , Trainees tool kit, , - 1 Set, , •, •, , Cotton Waste, Emery sheet, , - ½ kg, - 1 No, , PROCEDURE:, Follow the safety precautions in the fitting workshop, , 5 Do not use a spanner as hammer., , 1 Ensure that the handle of file is fitted tightly., , 6 Do not use a steel rule as a screw driver., , 2. Fix the work piece in the vice clamped correctly., , 7 Use coolant at the time of hack - sawing and drilling., , 3 Never use hammers with loose heads., , 8 Clean the work place after each work and keep neat., , 4 Use the proper tool for the job., , 14, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic- Basic Workshop Practice, , Exercise 1.1.11, , Workshop practice on filing and hacksawing, Objective: At the end of this exercise you shall be able to, • hold different section of job for hacksawing, • cut the job using hacksaw, • file the job piece for smoothing the surface., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, , Trainees tool kit, Engineer’s Steel Rule 300 mm, Metallic Scriber 150 mm, Hacksaw frame with Blade 30 mm, Flat file 300 mm, Half Round file 300 mm, , Materials/Components, - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, , Hylam Board, 2mm Thick, Sand paper, No. 60 grade, Cotton waste, , - 1 Sq.ft, - 1 No, - ½ kg, , PROCEDURE, The Instructor has to give a dimension for the, job of hack saw cutting on the Hylam board., TASK 1: Marking of Hylam Sheet, 1 Take the Hylam sheet and clean by using dry cloth/, paper., , 2 Use the Steel Rule and scriber, mark the given, dimensions on the hylam sheet., 3 Get the work checked by the Instructor., , Safety: Hold the hacksaw frame firmly and, carefully., TASK 2: Cutting of Hylam Board using Hacksaw, 1 Fix the job piece in the bench vice tightly., 2 Fix the hacksaw blade into the frame with proper, direction., 3 Using hacksaw, cut the hylam board at the markings., Note: When sawing with the hand hacksaw, start the movement from the arms and is, assisted by a corresponding movement of the, body., , 4 Make forward stroke with pressure on the handle by, pushing the hack saw for cutting., 5 Make return stroke without pressure by pulling the, handle to move backwards., 6 Move the full length of the saw blade for cutting in, forward stroke, 7 Saw correctly in a straight line along the marked line., 8 Get the work checked by the Instructor., , TASK 3: Filing the job, 1 Hold the job in the bench vice with a projection of 5 to, 10 mm from the top of the vice jaw., 2 Select flat files of various grades and length according, to the, size of the job, quantity of metal to be removed/, material of the job., 3 Hold the handle of the file and push the file forward, using your hand palm., 4 Hold the tip of the file according to the quantity of the, metal to be removed for heavy filing or light filing or, for removing local unevenness., , 5 Start filing by pushing the file uniformly during the, forward stroke and release the pressure during the, return stroke., Note: Continue giving strokes. Balance the, pressure of the file in such a way that the file, always remains flat and straight over the, surface to be filed., 6 Check the surface and continue filing if required., 7 Get the work checked by the Instructor., , 15, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.12, , Practice simple sheet metal works, fitting and drilling, Objective: At the end of this exercise you shall be able to, • mark, cut, bend and assemble a sheet metal work., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, •, •, •, •, •, , Materials/Components, , Trainees tool kit, Engineer’s Steel Rule 300 mm, Metallic Scriber 150 mm, Hacksaw frame with Blade 300 mm, Flat file 300 mm, Half Round file 300 mm, Shearing Machine, Press Break, Centre punch, Ball pein hammer, Electrical hand drilling machine, , - 1 Set, - 1 No, - 1 No, - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - as reqd, , •, •, •, •, , Aluminium sheet 2mm Thick, Sand paper No 6 grade, Cotton waste, Rivet (size and number as per, the job drawing), , - 1 Sq. ft, - 1 No, - ½ kg, - as reqd, , PROCEDURE, 1 Marking: Mark the required dimensions and holes, where to be made using steel rule and scriber. Mark, the line for rivet/weld on the sheet metal., 2 Cutting: Cut a large sheet into smaller rectangles, using a shearing machine or snips., 3 Punching: Punch the centre points of the holes to be, drilled lightly using a centre punch and hammer., 4 Drilling: Place the sheet on the workbench and drill, the required holes using portable drill machine. If the, sheet is thick and hard, then make holes using bench, drilling machine., Safety precaution:, •, , Turn OFF the drilling machine when fixing/, changing Drill Bits. Ensure that the Chuck, is tight before Using the Drill., , •, , Hold the sheet metal when marking/cutting/, punching or drilling operations bending., , 5 Bending: Position the sheet on the Press break so, the bend line is above a vee-shaped channel then, brings down the bending tool. This pushes the sheet, into the vee and the sides of the blank move up as the, bend is formed. Hold the Sheet Parallel to the Bender, 6 Assembling: Each piece of the assembly is held in, position with clamps. Then tack weld or rivets or, screwing are made to hold everything together., Wear safety glasses to protect your eyes from, flying debris., 7 Finishing: After assembly or joining most fabrications, get some finishing. This ranges from cleaning up welds, to polishing to a mirror finish, range of painting and, coating options. These usually have two objectives:, protect the fabrication against corrosion, and provide, whatever finished appearance is needed., , 16, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basic Workshop Practice, , Exercise 1.1.13, , Make an open box from metal sheet, Objective: At the end of this exercise you shall be able to, • make an open box using metal sheet., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, •, •, •, •, •, , Trainees tool kit, Engineer’s Steel Rule, 300 mm, Metallic Scriber, 150 mm, Hacksaw frame with Blade, 300 mm, Flat file, 300 mm, Portable Drilling Machine, Shearing Machine/Beverly shears, Press Break, Centre punch, Ball pein hammer, Mallet, , Materials/Components, - 1 Set, - 1 No, - 1 No, - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, , 20 SWG sheet Metal, Sand paper No 6 grade, Cotton waste, Rivet (size and number as per, the job drawing), Card board sheet, , -1 Sq.ft, - 1 No, - ½ kg, - as reqd, - as reqd, , PROCEDURE, 1 Make an expanded template for the box using, cardboard, paper, etc., 2 Trace the template on to the piece of sheet metal., 3 Cut the piece into the same shape as template. Use, the corner notches to cut out any right angles, but be, sure to line it up exactly on the lines. Use the Beverly, shears to cut off the small corners., 4 Drill 2mm diameter holes using portable drilling, machine on all corners of box., , 5 Now the sheet metal is ready to start bending., 6 Bend the sheet metal to 90° at all the four corners, using a wooden mallet., Ensure the overlap parts are well within the, bending lines of the side., 7 After finishing the bending work at all the four sides, up, assemble the box using spot welder or rivet to, hold all the sides in place., 8 Get the work checked by the Instructor., , 17, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basics of AC and Electrical Cables, , Exercise 1.2.14, , Identify the phase, neutral and earth on power socket use testers to monitor, AC power, Objectives: At the end of this exercise you shall be able to, • test and identify phase, neutral and earth terminals of a single phase AC mains 3 - pin socket using., 1 test lamp, 2 neon tester, , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Materials/Components, , Trainees Tool Kit, Neon tester, 500 V, Digital multimeter with probes, Test lamp with holder and grill, (240V AC/60 Watt), , -, , 1 Set, 1 No, 1 No, 1 No, , •, , •, •, , PVC wire (1.5 sq.mm), Red colour, (5/20 gauge), Black colour, (5/20 gauge), Incandescent bulb 60 watts/250 V, (per batch), Sketch pen, , -1m, -1m, - 1 No, - 1 No, - 1 No, , PROCEDURE, Safety precaution: Be cautious and safety from, electrical shock., TASK 1: Fix the grill on the holder to prevent damage to bulb, 1 Make a test lamp setup as shown in Fig 1, , 6 Record the observation in Table - 1, 2 Test the continuity at the free ends using an ohmmeter, to confirm correct wiring and connections of the test, lamp., , -, , If supply does not exist (lamp does not glow),, consult your instructor before carrying out further, steps., , 3 Mark terminal sockets on the 3 - pin 230V, AC mains, socket to identify phase, neutral and earth points as, A, B and C using sketch pen as shown in Fig 2., , -, , If lamp glows, the outlet point B is Phase or Live, (L) mark outlet B as ‘L’ using sketch pen. Repeat, steps 5 and 6 with the test lamp across Earth and, socket B, , 4 Switch ON the AC supply to the 3 pin socket., , 7 Repeat steps 5 & 6 with test lamp across A - C and if, lamp does not glow, the other point A is neutral (N), mark it as N., Table - 1, , 5 Connect the test lamp across the 3 -pin socket outlet, points (A&B) and check the presence of mains supply., , Sl No., , Measurement across, A- B, , 1, 2, 3, , -, , Lamp condition, , B-C, , C- A, , -, , -, , Remarks, , -, , 8 Get the work checked by the Instructor., , Note: If the mains supply circuit is provided, with ELCB, it may break the circuit when the, test lamp in connected across the line L and, earth E, , 18, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basics of AC and Electrical Cables, , Exercise 1.2.15, , Construct a test lamp and use it to check mains healthiness, Objectives: At the end of this exercise you shall be able to, • construct a test lamp, • check mains healthiness by using the test lamp., , Requirements, Tools/Equipments/Instruments, •, •, , Trainees Tool Kit, Digital multimeter with probes, , Materials/Components, - 1 Set, - 1 No, , •, , •, , PVC wire,, Red colour, (5/20 gauge), Black colour, (5/20 gauge), Incandescent bulb 60W/250V, , -1m, -1m, - 1 No, , PROCEDURE, Safety precaution: Be cautious and your safety, from electrical shock is your responsibility., , 4 Connect the test lamp across live and neutral, terminals of AC mains supply point., , 1 Skin the terminals of PVC wire and connect them into, pendent lamp holder., , 5 Switch ON the mains supply and observe the, brightness of lamp., , 2 Fix the 60 watt bulb into the lamp holder., , 6 Record the observation of mains healthiness as good, in Table - 1, , 3 Use ohm meter test and ensure continuity of the, constructed test lamp as shown in Fig 1., , Table - 1, Lamp brightness, OK, , Mains healthiness, , Not OK, , 7 Get the work checked by the Instructor., , 19, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basics of AC and Electrical Cables, , Exercise 1.2.16, , Measure the voltage between phase and ground and rectify earthing, Objectives: At the end of this exercise you shall be able to, • measure the voltage between phase to ground and detect the fault, • rectify defective earth connection., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, , Trainees tool kit, Digital multimeter with probes, Test lamp, , - 1 Set, - 1 No, - 1 No, , •, , Sketch pen, , - 1 No, , PROCEDURE, Safety precaution: Be cautious when working, on live Ac mains supply, TASK 1: Measurement of voltage between phase and ground terminals, 1 Identify the phase and earth terminals of 3 pin AC, 230V socket outlet., 2 Mark the three terminals as L.N & E using sketch pen, 3 Switch ON the mains supply to the 3 pin socket., 4 Select AC voltage range on the DMM and measure, voltage across ‘L’ and ‘E’ terminals as shown in Fig 1., 5 Record the observation in Table - 1., , Table - 1, Sl No, , AC voltage measured across terminals, L to E, L-N, , Remarks, , 1, 2, 6 Get the work checked by the instructor., TASK 2: Rectification of the defective earth., 1 Connect test lamp between the earth and phase, terminals socket., , 7 Remove the bolt & nut clean the corrosion on the, electrode contact terminal., , 2 Observe the condition of the brightness in the lamp., , 8 Refix the earth wire connection to the electrode. (Use, new bolt & nut if the old is more corroded)., , 3 Connect the test lamp between L and N terminals and, confirm the lamp glowing., 4 Switch OFF the mains supply, remove the 3 pin socket, and observe the wire connection on the earth terminal., 5 Check and ensure the continuity of the wire to the, earth pit on the ground., , 9 Check the continuity from earth electrode to the 3 pin, socket terminal., 10 Switch ON power use test lamp, and measure voltage, across ‘L’ and ‘E’ terminals record your observations., 11 Get the work checked by the Instructor., , 6 Check the continuity between the earth electrode and, wire conductor., 20, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basics of AC and Electrical Cables, , Exercise 1.2.17, , Identify and test different AC mains cables, Objectives: At the end of this exercise you shall be able to, • identify different types of AC mains cables, • test different AC mains cable., , Requirements, Tools/Equipments/Instruments, , Materials/Components, , •, •, , •, •, •, •, •, •, , Trainees tool kit, - 1 Set, Digital multimeter with probes, - 1 No, Aids: Chart showing different types of cables, , 5 core cable, 4core cable, 3 core cable, 2 core cable, Cotton waste, Cotton cloth, , -, , 1m, 1m, 1m, 1m, as reqd, as reqd, , PROCEDURE, Note: The instructor has to select the types of, cables for this exercise and label them using, numbers, TASK 1: Identification of types of cables, 1 Pick one of the labelled cable from given lot, identify, the number of cores, their colours and number of, conductors in each core., 2 Record the observations in Table - 1 (Refer to the chart, to identify the name of cable), , 3 Repeat steps 1 & 2 for remaining labelled cables., 4 Check the continuity of each core of above cables, and record your observations in Table 1, , Table - 1, Sl. No., , Label No., , No of Cores, , Colours, , No of Strands Type name Value in ohms, , Remarks, , 1, 2, 3, 4, 5, 5 Get the work checked by the instructor., 21, , Copyright Free, Under CC BY Licence

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TASK 2: Testing of different AC mains cables, 1 Connect the each cable ends between the proper, terminals of multimeter for continuity test as shown in, Fig 5., 2 If the reading shows zero, then there is continuity in, the cables. If it shows infinity, there is a break in the, cable., , 22, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.2.17, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basics of AC and Electrical Cables, , Exercise 1.2.18, , Prepare terminations, skin the electrical wires / cables using wire stripper and, cutter, Objectives: At the end of this exercise you shall be able to, • skin (cut and remove) the insulation of cables using manual stripper, • skin the insulation of two core cable using auto ejection type wire stripper, • remove the insulation of the PVC sheathed cable using side cutting pliers, • terminating wire end with crocodile clip and banana plug, • terminating skinned cable to three pin mains plug., , Requirements, Tools/Equipments/Instruments, •, •, •, , Trainees tool kit, Wire stripper: manual & auto, ejection type, Diagonal cutting pliers 150 mm, , - 1 Set, - 1 each, - 1 No, , Materials/Components, •, •, , Copper and aluminium cables of the, following sizes:, PVC single strand 1.5 sq. mm, , -3m, , • PVC single strand 2.5 sq. mm, • PVC cable 14/0.2 mm, • PVC cable 21/0.2 mm, • PVC cable 40/0.2 mm, • Crocodile clips (Black x Red), • PVC insulated and PVC sheathed, cable single core, • Two core PVC cable (250V/ 6A), • 3 core PVC cable, • 3 pin electrical mains plug 250 V/6A, • Cut pieces of flat twin core cable, , -3m, -3m, -3m, -3m, - 2 Sets, -3m, -1 m, -1m, - 1 No, -3m, , PROCEDURE, TASK 1: Skinning the cable insulation using a manual wire stripper, 1 Pick one of the labelled cable., 2 Straighten the cable ends at which insulation is to be, skinned., 3 Mark the point 10 mm from which the insulation is to be, skinned on both the ends of the cable., 4 Adjust the jaws of the manual stripper to suit the gap, equivalent to the size of the conductor core. (Fig 1a, and 1b) and set the stop position of the screw, 5, , Hold the cable firmly in one hand, set the jaws at the, mark, press the handle of the stripper and make a cut, on the insulation., Safety: Exercise care, not to nick the conductor., For better practice try on small waste pieces of, wires., , 6 Pull the stripper to remove the insulation., 7 Get the work checked by the Instructor., , TASK 2 : Skinning the cable insulation using an auto ejection type wire stripper, 1 Repeat steps 1 to 3 of Task - 1, 2 Take the auto ejection type wire stripper and jaws,, slots for various diameter markings. (Fig 2 and 3), 3 Select a slot in the jaws whose diameter is equal to the, conductor core, Safety Precaution: While using this stripper the, cable insulation should be put in the proper, slot to avoid damage to the conductor., , 4 Place the marked point of cable at the jaws of the, stripper exactly at the slot., 5 Hold the cable firmly in one hand and press stripper, handles till the insulation is cut and removed from the, cable end., 6 Repeat the above steps to skin the other ends of the, cables, , 23, , Copyright Free, Under CC BY Licence

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7 Get the work checked by the instructor., TASK 3 : Skinning the insulation of three core cable, 1 Mark out the length up to which the insulation has to be, removed from the cable end., 2 Hold the cable firmly, place the electrician knife on the, marking of the sheath or insulation of the cable to be, removed., 3 cut the insulation to a depth of approximately 1 mm, thickness of the sheath or insulation carefully., , Here again be very careful not to cut the, insulation of wires inside the cable., Alternative method - using diagonal cutting pliers., 1 Cut the covering from the marked end up to the length, it should be removed by using side cutting pliers as, shown in Fig 6., , Safety precaution: Use the knife carefully. By, cutting too deep into the insulation or sheath of, a cable will damage the insulation of wires, inside the cable. Avoid deep cutting (Fig 4)., This causes short circuit and breakdowns in, electrical installations., 2 Cut the sheathing along the circumference as shown, in Fig 7., , 4 Place the cable end on table top, use the knife, slit, open the sheath or insulation between the circular cut, you have made at the end of the cable, as shown in, (Fig 5)., , 3 Get the work checked by the Instructor., , TASK 4 : Terminating wire end with crocodile clip and banana plug, 1 Take a piece of tinned red wire and a red crocodile clip., , 24, , 2 Unscrew and take out the screw and washer from the, crocodile clip., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.2.18, , Copyright Free, Under CC BY Licence

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3 Insert the tinned end of the wire through the leg of the, crocodile clip as shown in Fig 8., , 7 Bend the other free end of the tinned wire by hand or, using a nose pliers such that it takes the shape of a, loop and Insert the loop fully into the hole of the banana, plug as shown in Fig 10 and tighten the screw firmly., Hold the wire with the body of the banana plug such, that the wire does not slip off while tightening., , 4 Bend the tinned exposed conductor to form a loop, using a round nose plier. Place the loop in the screw,, such that the loop is in the direction of screw as shown, in Fig 9, 8 Holding the banana plug in one hand and the wire in, the other pull the wire gently to ensure that the, termination is firm. If termination is found loose, unscrew the screw, pull out wire and repeat steps 7., 9 Follow steps 1 to 8 above and prepare a black wire, termination with crocodile clip to banana plug., 10 Repeat the steps 1 to 8 and terminate different wires, as shown in Fig 11., 5 Put the screw back on the crocodile clip and tighten the, screw firmly. While tightening hold the wire such that, wire does not protrude below the screw washer., Excessive wire protrusion results in weak, termination. Hence, the termination may come, out during usage., 6 Take a red colour banana plug, unscrew the loosen, screw on it almost fully but do not take out the screw, from its place., As the screw is small it will be time consuming, to replace the screw back in its position if taken, out from the plug., , 11 Get the work checked by the Instructor., , TASK 5: Terminating skinned Cable to three pin mains plug, The steps given below are for the most, common type of three-pin PLUGS. For other, types the steps may vary slightly. Consult the, instructor in case of difficulty., 1 Open the outer plastic casing of the 3 pin plug. Remove, the cable grip and place them safely in a tray or screw, box., 2 Ensure the length of the outer sheath skinned is equal, to the distance between the earth terminal and the, cable grip as shown in Fig 12., 3 Remove the anti-king shroud (anti-king ring) from the, plug and take the cable through it as shown in Fig 13., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.2.18, , Copyright Free, Under CC BY Licence, , 25

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4 Make loops of the tinned conductor end of wires, Loosen the screw insert the red wire loop into terminal, marked L or Live as shown in Fig 14a and tighten the, terminal screw., , 8 Reassemble the top cover of the plug. The finished, work should look as shown in Fig 15., , 5 Insert the black/blue wire loop into the terminal marked, N or Neutral and the green wire loop to the earth, terminal as shown in Fig 14b and tighten screws., , The cables terminated with 3 pin main plug, made in this exercise will be used in further, exercises., 6 Position the anti-king shroud, reassemble the cable, grip rubber and its screws., 7 Get the work checked by the instructor., , 26, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.2.18, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Basics of AC and Electrical Cables, , Exercise 1.2.19, , Measure the gauge of the wire using SWG and outside micrometer, Objectives: At the end of this exercise you shall be able to, • measure the gauge of the wire using, a) standard wire gauge (SWG), b) outside micrometer., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Trainees tool kit, Standard wire gauge (per batch), Outside micrometer 0-25 mm, (per batch), Pocket table book / wire table, , Materials/Components, - 1 Set, - 1 No, - 1 No, , •, •, •, , - as reqd, , •, , Single strand wire pieces, (assorted sizes), Rigid multistrand wire piece, Flexible multi strand wire pieces, - Red colour, - Black colour, - Green colour, Dry cloth, , - 2 Nos, - 1 No, - 1 No, - 1 No, - 1 No, - as reqd, , PROCEDURE, Note: The Instructor has to attach labels to, identify each piece of wire correctly as shown, in Fig 1., , TASK 1: Measurement of gauge number of wire using standard wire gauge, 1 Clean the skinned end of single strand wires using dry, cloth and straighten the conductors by hand., Note:, Do not use nose pliers/tweezers to straighten, conductors as this may deform conductors, diameter., Dust and other particles on the conductor,, bends and kinks in the conductor give wrong, measurement of the diameter / gauge number., 2 Pick a labelled single strand wire for measurement of, gauge number., 3 Hold the SWG in one hand and insert the exposed, conductor of the wire into one of the large holes of the, stranded wire gauge (SWG) and take out the wire, through the upper slot above that hole as shown in, Fig 2., 4 Repeat step 3 till the conductor exactly fits into the slot, as shown in Fig 3. Remove the conductor by pushing, it down into the hole and pulling it out., 5 Note down the number printed / marked at the hole and, record the observation in Table 1., 6 Repeat steps 3 and 4 for the other end of the wire., 7 Repeat steps 3 to 6 for the other single strand wires., 8 Get the work checked by the Instructor., , 9 Take the rigid multistrand wire. Clean the conductors, and untwist the twisted strands and separate one of, the strands as shown in Fig 4., , 27, , Copyright Free, Under CC BY Licence

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10 Carry out steps 3 & 4 measure and record the SWG of, one strand of the wire., 11 Count the total number of strands available in that wire, and record it in Table 1, 12 Repeat steps 9 to 11 for the flexible multistrand wires., 13 Refer pocket table book/wire table and convert the, measured SWG value of wires into diameter of the, wires in inches and millimeters. Record the readings, in Table 1., Table 1, WireTag, No., Sample, Entry, Single Strand, Wire, , Conductor, Size of SWG, , Conductor, dia. in mm, , Conductor, dia.in inches, , END 1, , 20, , 0.91, , 0.036, , END-2, , 20, , 0.91, , 0.036, , No. of, Conductors, 1, , END-1, 1, END-2, END-1, 2, END-2, 3, 4, , Multi-strand, Wire, , 5, 6, 7, 8, , 14 Get the work checked by the Instructor., TASK 2 : Measurement of diameter of the wire using Outside Micrometer, Note: The Instructor has to guide the trainees, in handling the micrometer and taking precise, measurements., 1 Find the least count and zero error of the given, micrometer as shown in Fig 5. Note down the values, in Table 2., 2 Take the wire with label No. 1 for measurement. Clean, and straighten the exposed conductor., 3 Carefully hold the micrometer in hand and place the, conductor in the gap between the anvil and spindle., Turn the thimble till the conductor is just held between, the anvil and the spindle as shown in Fig 5. Turn the, ratchet till a click sound is heard., , 28, , Safety precaution:, Do not over tighten as this may deform the, conductor and hence give wrong measurement., 4 Record the reading on the barrel and thimble in table, 2. Loosen the grip on the conductor and take out the, conductor from the micrometer., 5 Repeat steps 2,3 & 4 for the remaining single strand, and multi-strand wires, Measure the diameter of only one strand in the, case of multi-strand wires., 6 Calculate and record the diameter of the wires in mm, for the micrometer readings recorded., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.2.19, , Copyright Free, Under CC BY Licence

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7 Compare the dia. of the wires noted in Table 1 using, stranded wire gauge and the dia. measured using, micrometer. If readings are found not matching consult, the instructor., 8 Get the work checked by the Instructor., Note: Keep the wires to be utilized for the next, exercise., , Table 2, Least count (LC), Zero error correction (ZC), Wire tag, No., , Barrel, reading, , Thimble reading, (Thimble div x LC), , Wire dia. in mm, (2) + (3) ± ZC, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.2.19, , Copyright Free, Under CC BY Licence, , 29

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Electronics & Hardware, Electronics Mechanic - Basics of AC and Electrical Cables, , Exercise 1.2.20, , Refer table and find current carrying capacity of wires, Objectives: At the end of this exercise you shall be able to, • determine the current carrying capacity of copper conductor by referring to the wire table, • determine the current carrying capacity of aluminium conductor by referring table., , Requirements, Materials / Components, •, •, •, •, , SWG size in inches/mm, Wire table of carrying capacity of, insulated copper wire table 4 & 5, , Cotton cloth, - as reqd, Different size of copper conductor cable - as reqd, Different size of aluminium conductor, cable, - as reqd, wire table, - as reqd, , PROCEDURE, TASK 1 : Determination of current carrying capacity of copper conductor, Assumption: A bunch of different diameters of, copper conductors are to be displayed on the, work bench. Trainees are required to find out, the current carrying capacity of wires given, below by referring the Table 1., , 1 Determine the current carrying capacity of the given, copper conductor and note down in Table 2., , Table 1, COPPER AND EQUIVALENT ALUMINIUM CONDUCTOR CABLES CURRENT RATINGS, Copper Conductor, Size of cable, No & dia, of wire(mm), , Nominal, area in, mm2, , Aluminium Conductor, , Current Rating in, amperes, 2-core, Cable, , 3 or 4 core, cable, , Size of cable, No & dia, in mm, , Nominal, area in, mm2, , Current Rating in, Amperes, 2-core, Cable, , Table 2, Size of cable of Copper, Conductor, No and dia of, wire in mm, , Normal area in mm2, , Current Rating in amperes, , 30, , Copyright Free, Under CC BY Licence, , 3 or 4, Core cable

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2 Determine the copper conductor size for the given, current rating and note down in Table 3., Table 3, Current rating in Amperes, , Copper Conductor size, , 3 Get the work checked by the Instructor., , TASK 2 : Determination of the current carrying capacity of Aluminium conductor, 1 Determine the current carrying capacity of the given, aluminium conductor and note down in Table 4., Table 4, Size of cable of Aluminium, Conductor, No and dia of, wire in mm, , Current Rating in amperes, , Normal area in mm2, , 2 Determine the aluminium conductor size for the, given current and note down in Table 5., Table 5, Current rating in Amperes, , Aluminium Conductor size, , 3 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.2.20, , Copyright Free, Under CC BY Licence, , 31

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Electronics & Hardware, Exercise 1.2.21, Electronics Mechanic - Basics of AC and Electrical Cables, Crimp the lugs to wire end, Objectives : At the end of this exercise you shall be able to, • choose the wire, • collect the suitable size of lug, • crimping the lug., , Requirements, Tools/Instruments/Equipments, •, •, •, •, •, •, , Materials/Components, , Crimping pliers (1mm to 16mm), Steel rule 300mm, Insulated side cutting pliers, Electrician Knife, Wire stripper auto-eject 200mm, Wire stripper (manual) 200 mm, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, , •, •, , Lugs 1.5 mm, Lugs 2.5 mm, Lugs 4 mm, Lugs 6 mm, Cable 1.5 sq mm,2,4,5,6 length, 300mm, Cotton waste, Conducting paste, , - 6 Nos, - 6 Nos, - 6 Nos, - 6 Nos, - 1 No, each, - as reqd, - 1 tube, , PROCEDURE, TASK 1 : Choosing the wire, 1 Select the wire depending on the application of work., , 1, , 2 Cut the wire 300 mm length from the wire coil as shown, in Fig 1., 3 Get the work checked by the Instructor., , TASK 2 : Collecting the suitable size of Lug, 1 After finding the cable size, select the correct lug from, the table as shown in Fig 2., , 2, , 2 Show it to the instructor for its correctness., 3 Get the work checked by the Instructor., , TASK 3: Crimping the lug, 1 After selecting wire and lug select the correct crimping, tool, 2 Measure the length of Lug using steel rule., 3 Measure appropriate strip length. Line up the, connector barrel to the wire and mark the cable as, shown in Fig 3., , 4 Once determined the length of the wire strip the end, using wire stripper, being careful not to damage the, conductors as shown in Fig 4., 5 Check the striped insulation to the proper length, so, that the conductor can be fully inserted into the, connector barrel as shown in Fig 5., , 32, , Copyright Free, Under CC BY Licence

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3, , 7, , 8 Select the appropriate die style to match the, installation tool. The die index number and colour code, indicated on the connector should match when the, correct die is chosen as shown in Fig 8., , 4, , 8, , 9 Start the crimping tool cycle and hold steady until the, entire cycle is complete. Release ram. Repeat the, same process until all crimp locations on the barrel, have been completed as shown in Fig 9., , 5, , 9, , 6 Insert the wire in to the lug as shown in the Fig 6., 6, , 10 After crimping remove the crimped cable as shown in, Fig 10., 10, , 7 Ensure that all wires of the conductor are within the, crimp barrel as shown in Fig 7., 11 Get the work checked by the Instructor., Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.2.21, , Copyright Free, Under CC BY Licence, , 33

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Electronics & Hardware, Electronics Mechanic - Single Range Meters, , Exercise 1.3.22, , Measure AC and DC voltages using multimeter, Objectives: At the end of this exercise you shall be able to, • measure the AC voltage using multimeter, • measure the DC voltage using multimeter., , Requirements, Tools/Instruments/Equipments, , Materials/Components, , •, •, , •, •, •, •, , Digital Multimeter with probes, - 1 No, Auto transformer (VARIAC) single phase - 1 No, having input 0-220V AC output 0-270VAC, /15A, , Dry cell 1.5 V / AA size, 3V CR 2032 Lithium, 9V battery (Alkaline type), 12 V battery (SMF type) AH rating available, in the section), , - 1 No, - 1 No, - 1 No, - 1 No, , Note:, 1 The instructor has to explain the differences, between the analog multimeter and DMM., 2 Provide an analog multimeter to trainees, and instruct them to study the panel/ranges/, scales/selector switch/socket etc., in it., , PROCEDURE, TASK 1: Measurement of AC voltage using multimeter., 1 Observe and check the number of available ranges in, the given multimeter., 2 Plug the black colour probe into the COM socket and, plug the red colour probe into the V, , mA, socket of, multimeter as shown in Fig 1., , Note : Most multimeters power up in Auto, range mode. This automatically selects a, measurement range based on voltage present., 4 Connect the meter across the autotransformer output, socket., , Fig 1, , Safety precaution:, Note: Before power ON auto transformer keep, the voltage selector knob in 0V, position., 5 Power ON the Auto Transformer observing the, multimeter increase the voltage to 10 volt., 6 Record the observation in Table - 1, 7 Repeat the above step in steps of 10V up to 50V note, down the corresponding readings in Table 1., 8 Get the work checked by the instructor, , 3 Select the multimeter knob (switch) to the AC Voltage, range., , 9 Bring down the voltage selector to OV position and, switch OFF the variac., , Table - 1, S.No, , Variac dial position, , Meter reading, , Remarks, , 1, 2, 3, 4, 5, 34, , Copyright Free, Under CC BY Licence

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TASK 2 : Measurement of DC voltage using multimeter, 1 Select the multimeter knob (switch) to the DCV or V, Voltage section as shown in Fig 2., Fig 2, , 3 With the range set correctly, as shown in Fig 3,, measure the voltage of the battery and record the, readings in Table - 2., 4 Repeat the above steps for other battery and record, the reading in Table - 2., Table 2, S No., , 2 Take the 9V battery identify supply terminals place the, red probe on the positive terminal, and the black probe, on the negative terminal., Note: If the range was set too high, may not get, a very accurate reading. Turn the dial to a lower, range to get a better reading as shown in Fig 3., , Battery type, , 1, , 1.5 V, , 2, , 3V, , 3, , 9V, , 4, , 12 V, , Mark readings, , Remarks, , 5 Get the work checked by the Instructor., , Fig 3, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.3.22, , Copyright Free, Under CC BY Licence, , 35

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Electronics & Hardware, Electronics Mechanic - Single Range Meters, , Exercise 1.3.23, , Identify the type of meters by dial and scale marking / symbols, Objectives: At the end of this exercise you shall be able to, • identify the type of meter (AC/DC) and function from the dial markings, • identify the type of meter (AC/DC) from the symbols on the dial., , Requirements, Tools/Instruments/Equipments, , Materials / Components, , • Voltmeter 0 - 250 V, DC, MC panel type - 1 No, • Voltmeter 0 - 500V, MI panel type, - 1 No, • Ammeter 0 - 5A, DC, MC panel type, - 1 No, • Ohmmeter 0 - 2 M, - 1 No, • Multimeter - analog type with probes, - 1 No, • Multi-range voltmeter MC/MI, - 1 No, Aids: Chart showing different dial scale markings, (Linear and non linear) and symbols used on AC/DC, and DC meters., , •, , Connecting leads flexible, , - assorted sizes, , Note: The Instructor has to label the meters, used for this exercise before issuing to trainees., , PROCEDURE, TASK 1:- Identification of meter type (AC/DC) and its function from the dial markings., 1 Pick one of the labelled meter from the lot, observe the, markings on the dial scale calibration. Refer to the, chart and record the observation in Table 1., , 2 Observe the symbols printed at the bottom line on the, dial plate and record the observations in Table 2. with, reference to the chart., , Table 1, Label, No of, Meter, , Dial scale divisions markings, Linearly, Yes/ No, , Non - Linearly, Yes/ No, , Function letter, V/mA /, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 36, , Copyright Free, Under CC BY Licence, , Type of meter, AC/ DC, or DC only

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3 Identify the instruments shown in Figures 1 & 2 for, their types - DC, AC or both, with reference to Fig 3, Record the response in the Table 2., , 4 Identify the instruments single or multi-scale /, multi-range instruments and their functions. Record, the response in Table 3., , TABLE 2, , TABLE 3, , Instrument, Figure 1, , Symbol, , Function, , Instrument, , Range, , Scale, , Function, , 1, 2, , Figure 2, 3, 4, 5, 6, 7, 8, 9, 10, 5 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.3.23, , Copyright Free, Under CC BY Licence, , 37

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Electronics & Hardware, Electronics Mechanic - Single Range Meters, , Exercise 1.3.24, , Demonstrate various analog measuring instruments, Objectives: At the end of this exercise you shall be able to, • select various analog measuring instruments, • demonstrate various analog measuring instruments., , Requirements, Materials/Components, , Tools/Equipments, •, •, •, •, •, •, •, , MC Ammeter 0-5A, MI Ammeter 0-10A, MC Milli ammeter 0-1mA, MC Milli volt meter 0 - 100mV, MC voltmeter 0-50V, MI Voltmeter 0-500 V, Mega ohmmeter 0-10 Mega ohm, , •, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , Cotton Waste, , -as reqd, , PROCEDURE, TASK 1 : Demonstration of various analog measuring instruments., 1 The Instructor has to arrange a set of, moving coil / moving iron type analog, measuring instruments such as Ammeters,, voltmeters, milliammeters, milli voltmeters,, etc and demonstrate them to trainees., , 1 Pick one of the labelled meter, observe the panel and, record the observations in Table - 1, 2 Repeat the above step for all the labelled meters., , 2 Label each meter type separately and group, them under MC / MI, Table 1, Label No., , Name of the Meter, , (1), , (2), , 1, , MC ammeter, , 2, , MC Milli Voltmeter, , 3, , Mega Ohmmeter, , 4, , MI Volmeter, , 5, , MC Milli ammeter, , 6, , MI Ammeter, , 7, , MC Voltmeter, , Measuring Range, , Diagram of dial scale marking, , (3), , 38, , Copyright Free, Under CC BY Licence, , (4)

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3 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.3.24, , Copyright Free, Under CC BY Licence, , 39

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Electronics & Hardware, Electronics Mechanic - Single Range Meters, , Exercise 1.3.25, , Find the minimum and maximum measurable range of the meter, Objectives: At the end of this exercise you shall be able to, • determine the minimum and maximum measurable range of the meter., , Requirements, Tools/Equipments/Instruments, •, •, •, , Materials/Components, , Trainees tool kit, MC ammeter 0-500 mA, MC voltmeter 0-10V, , - 1 Set, - 1 No, - 1 No, , •, •, •, •, •, , Connecting cable copper 1.5sq.mm, Cotton cloth, Variable resistor/Rheostat 0-1k, SP Switch 6A, 240V, 9V Battery, , - as reqd, - as reqd, - 2 Nos, - 1 No, - 1 No, , PROCEDURE, 1 Collect ammeter, voltmeter, variable resistance battery and SP switch., , 6 Gradually increase load to 500 mA by varying, variable resistance., , 2 Assemble the circuit as shown in Fig 1., , 7 Also adjust the voltage across load resistor to 10 volts., 8 Note down the maximum measurable range of, milliammeter and voltmeter and record it in Table 1., Table -1, 1 Minimum range of milli ammeter _________, 2 Minimum range of volt meter ____________, 3 Maximum range of milliammeter__________, 4 Maximum range of voltmeter ____________, , 3 Set the variable resistance to have zero out., , 9 Get the work checked by the Instructor., , 4 Close the switch ‘S’., 5 Note down the minimum measurable range of, milliammeter and voltmeter and record in the Table 1., , 40, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Single Range Meters, , Exercise 1.3.26, , Carryout mechanical zero setting of a meter, Objectives: At the end of this exercise you shall be able to, • carry out mechanical zero setting of an analog meter, • measure the voltage of a dry cell using a single range voltmeter., , Requirements, Tools/Equipments/Instruments, •, •, •, , MC Voltmeter 0-5V or 0-50V, MC Voltmeter 0-15V, Screw driver 150mm with 3mm blade, , Materials / Components, - 1 No, - 1 No, - 1 No, , •, •, , Dry cells of different voltage range, Lead acid battery 12V/60 AH, , - as reqd, - 1 No, , Note:The instructor has to label the meter before, issuing them to trainees., , PROCEDURE, TASK 1 : Carry out Mechanical zero setting of a meter, 1 Take one of the labelled MC Voltmeter and check, whether the meter needle moves freely on the, graduated scale., If the needle is not moving freely consult your, instructor., 2 Place the meter on the table horizontally and check, whether the needle is pointing exactly on the zero, position on the meter scale as shown in Fig 1a., If the pointer is exactly on the zero marking of, he scale, the mechanical zero setting of the, meter is proper., , 4 Record your observation in Table 1., 5 Repeat the steps 1 to 4 for the other meter also., 6 Permission to correct the error on the meter., 7 Put the screw driver on the mechanical zero adjust the, screw as shown in Fig 2., 8 Observing the pointer, turn the screw very slowly as, required till the pointer reaches exactly on the ‘O’, marking on the scale., , 3 If the pointer is not pointing exactly on the zero marking, as in Fig 1(b) & (C) the meter has the Mechanical Zero, error., , 9 Get the work checked by the Instructor., , 41, , Copyright Free, Under CC BY Licence

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Table 1, Label No., , Meter range, , Pointer Position, on the dial scale, , Positive/, Negative, error, , Direction of screw, driver rotation, needed clockwise/counter, clock wise, , Avoid, parallax, error, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, , TASK 2 : Measurement of the voltage of dry cell & lead acid battery using single range voltmeter., 1 Take any one of dry cell from the given lot Clean, its terminals using cloth., 2 Identify the +ve and -ve terminals of the cell., 3 Touch the -ve meter probe (Black) to the -ve terminal, of the cell as shown in Fig 3., 4 Also touch the +ve probe (Red) to the +ve terminal, of the cell as shown in Fig 3., , 42, , If the pointer deflects reverse direction on, the scale the identified cell polarity is wrong., Recheck and interchange connection., 5 Note down the voltmeter reading., 6 Repeat the steps for the remaining cells and lead, acid battery and note down the voltmeter reading., 7 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.3.26, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Single Range Meters, , Exercise 1.3.27, , Check the continuity of wires, meter probes and fuse etc, Objectives: At the end of this exercise you shall be able to, • check the continuity of a 1.5 sqmm PVC wire, • check the continuity of multimeter probes, • check the continuity of a glass cartridge fuse., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , Trainees tool kit, Digital Multimeter with probes, Continuity tester, Wire stripper, Battery pack/Lead acid Battery 6V/5AH, , Materials/Components, - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, , Miniature lamp holder with 12V, - 1 No, PVC wire 2.5 sq.mm, -1m, PVC wire 1.5 sq.mm, -1m, Multimeter Probes, - 1 Pair, Glass cartridge fuse assorted ratings/sizes- 3 Nos, , The instructor has to provide assorted wires of, any length for continuity checking. Different, size and rated glass cartridge fuses both, serviceable and unserviceable ones for this, task., , PROCEDURE, TASK 1 : Checking the Continuity of meter probes, 1 Set the range selector switch to continuity/buzzer, position on the DMM., 2 Insert both the test probes into the COM and V mA, sockets following colour codes., , 3 Touch both the open ends of test probes and observe, for the zero Ohm on the display and listen to the buzzer, sound., 4 Record your observations in Table - 1 to ensure the, continuity of the meter probes., 5 Get the work checked by the Instructor., Table 1, , Sl.No., , Name of the Item, , 1, , Meter test probes, , 2, , Wire - 1, , 3, , Wire - 2, , 4, , Fuse - 1, Fuse-2, , Display on meter, , Buzzer sound, Yes, No, , TASK 2 : Checking the Continuity of wires, 1 Select two assorted wires of any length., , 3 Ensure that the DMM is set to continuity/buzzer position., , 2 Mark 10mm and skin the insulation at both ends of the, wires using wire stripper as shown in Fig 1., , 4 Connect both skinned ends of the wire across the, open ends of test probes and observe for buzzer, sound and zero display on the meter., 5 Record the observations in Table - 1., 6 Repeat steps 2 to 5 for the other wire also., 7 Get the work checked by the Instructor., , 43, , Copyright Free, Under CC BY Licence

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TASK 3 : Checking the Continuity of fuse, 1 Ensure that the DMM is set to continuity/buzzer position., 2 Pick and connect the glass cartridge fuse across the, open ends of test probes as shown in Fig 2., 3 Observe the display; listen to the buzzer sound and, record the observations in Table 2, If the reading is between 0 and 5 ohms the fuse, is good. A higher reading indicates a bad or, degraded fuse. A reading of OL (over limit or, infinity) definitely means a blown fuse wire., 4 Repeat above steps for all the fuses and record, observations in Table., 5 Get the work checked by the Instructor., Table 2, Sl.No., , Fuse reading in ohm, , Fuse name/type, , Remarks, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, , 44, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.3.27, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Single Range Meters, , Exercise 1.3.28, , Measure voltage and current using clamp meter, Objectives: At the end of this exercise you shall be able to, • measure AC voltage using clamp meter, • measure DC voltage using clamp meter, • measure AC current using clamp meter, • measure DC current using clamp meter., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Clamp meter with built in multimeter, Clamp meter (Digital) voltage,, current measurement, Variac 0-270VAC, Regulated power supply 0-30V/2A, , Materials/Components, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, •, , 12V/10W bulb with holder and wire, 100W/240V Test lamp with wire, Lead acid battery 12V / 7AH, SPST switch, , - 1 Set, - 1 No, - 1 No, - 1 No, , PROCEDURE, TASK 1 : Identification of ranges and display on Digital Clamp meter, 1 Refer to the user manual of the Digital clamp meter., 2 Switch ON the clamp meter and observe the display,, identify each icon representing various parameters, measured by the clamp meter., 3 Note down each one of them, with reference to user, manual record details in the Table 1., , Table 1, Sl. Description of the, No display/icon, , Meaning/, function, , Remarks, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, , TASK 2 : Measurement of AC voltage with Clamp meter, 1 Connect the black test of probe into the COM terminal/, socket., 2 Plug the red probe into the V mA socket., 3 Turn the rotary function switch to ACV/ voltage, section as shown in Fig 1., Note: For auto ranging model it automatically, display the measured value for other models., 4 Turn on the Clamp meter., 5 Measure the voltage by touching the probes to the AC, wall socket of the circuit as shown in Fig 2., 45, , Copyright Free, Under CC BY Licence

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6 View the reading on the display and note down, voltage in Table 2., 7 Repeat step 5 for other test point across variac and, note down the voltage in Table 2., 8 Get the work checked by the Instructor., Table 2, Sl., No, , Quantity, Measured, , 1, , Wall socket, , 2, , Variac, , 3, , Lead Acid Battery, , 4, , Regulated DC, power supply, , Volt, AC/DC, , Remarks, , TASK 3 : Measurement of DC voltage using Clamp meter, 1 Follow the Steps 1 and 2 of task 2., 2 Turn the rotary function switch of the clamp meter to, DCV voltage section as shown in Fig 3., , 3 Turn on the Clamp meter., 4 Measure the DC voltage by touching the probes across, the terminals of battery as shown in Fig 4., , 6 Repeat the DC voltage across the regulated power, supply and record the observation in Table 2., , 5 Observe the reading on the display and note down, in Table 2., , 7 Get the work checked by the Instructor., , 46, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.3.28, , Copyright Free, Under CC BY Licence

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TASK 4 : Measurement of AC current using Clamp meter, 1 Turn the rotary function switch to of the clamp meter, ACA current section as shown in Fig 5., , 4 Open the jaws of clamp meter by pressing the jaw, keep the phase conductor inside and release as, shown in Fig 6., , 5 Observe the current reading displayed on the meter, and record the readings in Table 3., 2 Select the circuit current to be measured in AC load, and determine the approximately nearest current range, on the meter., The clamp meter will automatically measure, the current by the auto ranging model., , 6 Connect the 100W test lamp to AC mains, and switch, ON the circuit., 7 Repeat steps 4 and 5, record readings., 8 Get the work checked by the Instructor., , 3 Identify the Phase conductor cable and separate it, from the Neutral and Earth cables., TASK 5: Measurement of DC current using Clamp meter, 1 Connect the 12V/10W lamp across the 12V lead acid, battery as shown in Fig 7., 2 Turn the rotary function switch to DC A Current, section as shown in Fig 7., , Table 3, Sl. Current measured, No circuit/point, , Current, AC/DC, , 1, , AC load circuit, , A.AC, , 2, , Test lamp 100W, , A.AC, , 3, , Battery circuit, , A.DC, , 4, , DC power supply, circuit, , A.DC, , Remarks, , 3 Switch ON the 12V DC power supply and ensure the, lamp is glowing., 4 Repeat steps 4 and 5 of task 4 above and record the, readings in Table 3., 5 Repeat the steps with the lamp connected across the, DC power supply with 10V., 6 Switch ON the 10V DC supply measure the DC, current and record the readings in Table 3., , 7 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.3.28, , Copyright Free, Under CC BY Licence, , 47

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Electronics & Hardware, Electronics Mechanic - Cells & Batteries, , Exercise 1.4.29, , Identify the +ve and -ve terminals of the battery, Objectives: At the end of this exercise you shall be able to, • determine the polarity of a battery using a digital voltmeter and analog voltmeter., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , Materials/Components, , Trainees tool kit, Voltmeter 0-15V MC, Voltmeter 0-300 MC, Digital multimeter with probes, Lead acid Battery 12V/7AH, , - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, , Connecting leads flexible, Test probes, , - as reqd, - 2 Nos, , Note: The instructor has to provide a fully, charged lead acid battery with specification, details clearly in the name plate., , PROCEDURE, 1 Collect the lead-acid battery, observe the construction,, supply terminals and specifications/details printed., 2 Draw the free hand sketch and mark the supply, polarities in it., 3 Record the technical details like nominal voltage,, current capacity, charging current, discharging rate, etch in Table 1., , 6 Observe the polarity displayed and bring the voltage, measuring range down/nearer to the battery voltage, printed/marked., 7 Record the readings in Table and confirm the correct, polarities of battery., 8 Interchange the test probes, repeat the steps 5 to 7, and verify the + or - sign displayed with the digits., , 4 Select DC volt measuring range (preferably higher, range) in DMM, insert the black colour test probe into, the COM socket and red colour test probe into the V,, mA marked socket., , -ve sign indicates that test probes/battery, polarities are reversed; on the battery terminal, red colour is marked to indicate positive polarity, along with a + sign and black colour is marked, to indicate negative polarity colour is marked, to indicate negative polarity along with a - sign, by the side of terminal posts/connecting points., , 5 Touch both the test probes across the lead-acid battery, terminals and observe the meter display Mark the, polarity of the battery as that of the voltmeter; the +ve, terminal of voltmeter as +ve terminal and the -ve, terminal of voltmeter that touches the battery terminal, as -ve terminal of the battery., , Note: Analog type volt meter reads the DC, voltage of battery with current polarity. The, pointer will reverse its deflection for opposite, polarities. Do not keep the meter in the reversed, polarity longer., , Note: If the deflection is reverse and the pointer, kicks backward, do not try again., Table 1, 1, , Model/Make, , 2, , Nominal volt, , 3, , Nominal current capacity, , 4, , Charging current, , 5, , Discharge rate, , 6, , DC output measured using DMM, , 7, , DC output measured using analog, voltmeter, , Free hand sketch of, battery, , Effect an analog meter test probes, interchanged., 9 Get the work checked by the Instructor., 48, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Cells & Batteries, , Exercise 1.4.30, , Identify the rated output voltage and AH capacity of given battery, Objectives: At the end of this exercise you shall be able to, • identify the rated output voltage and Ampere hour capacity of given battery., , Requirements, Tools/Equipments/Instruments, •, •, , MC Voltmeter 0-5A, Digital multimeter with probes, , Materials/Components, - 1 No, - 1 No, , •, •, •, •, •, , Lead acid battery 6V/4.5 AH, Lead acid battery 12V/7AH, 12V/10W bulb with holder, Connecting cables, SPST switch, , - 1 No, - 1 No, - 1 No, - as reqd, - 1 No, , Note: The instructor has to provide fully charged, batteries with specification/details clearly, visible and label them for this exercise/task., , PROCEDURE, 1 Collect the battery, read and record the name plate, details in Table 1., 2 Identify the rated output voltage and record it in the, Table -1., 3 Identify the Ampere hour capacity and record it in the, Table -1., Table 1, Name plate details, , Label No.1, , Label No.2, , 5 Switch ON the circuit, observe the lamp is glowing and, the ammeter current reading., 6 Record the reading in Table 2, 7 Keep the lamp in ON condition for 15 min and record, the current flow in Table 2., Table 2, Sl., No, , Terminal voltage, , Load, Current, , After 15, min current, , Manufacturer Name: ................................................., Type: ........................................................................., Model : ......................................................................, No. of Cells: ............................................................., Rated output voltage: ................................................., AH Capacity: .............................................................., , 8 Switch OFF the circuit remove the battery and replace, the other battery., 9 Repeat steps 5 to 7, record readings., , 4 Connect the lamp in series circuit with ammeter as, shown in Fig 1., , 10 Get the work checked by the Instructor., , 49, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Cells & Batteries, , Exercise 1.4.31, , Measure the voltages of the given cells/battery using analog/digital multimeter, Objectives: At the end of this exercise you shall be able to, • measure the voltage of given cell/battery using analog multimeter, • measure the voltage of given cell/battery using digital multimeter., , Requirements, Tools/Equipments/Instruments, •, •, , Digital multimeter with probes, Analog multimeter with probes, , Materials/Components, - 1 No, - 1 No, , • Lead acid battery 6V/12V any AH rating, • 1.5V/3V/9V battery, , - 1 No, -1 No, each, , Note: The instructor has to label the cells and, batteries used for this exercise /Task, , PROCEDURE, TASK 1 : Measurement of cell/battery voltage using analog multimeter, 1 Observe the front panel and insert the black colour, probe “COM” socket of analog multimeter and insert, the red colour probe into the V mA socket as shown, in Fig 1., , 2 Set the range selector knob of multimeter to DCV, as, shown in Fig 2., , 3 Set the voltage range nearest to the cell / battery voltage as shown in Fig 3., , 4 Pick the 9V battery, place the black probe on the, negative (-) terminal and red probe on the positive (+), terminal of the battery as shown in Fig 4., , 5 Check the Analog voltmeter reading as shown in Fig, 5 and record the reading in Table 1., 6 Repeat step 4 and 5 for the remaining labelled cells/, battery., 7 Get the work checked by the Instructor, , 50, , Copyright Free, Under CC BY Licence

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Table 1, Label, No, , Voltage marked, on the cell/, battery, , Meter range Measured, selected, reading, , Note: Readjust the voltage selector knob of the, analog meter suitably measure the cell/battery, voltage with accuracy of deflection of the, pointer on the calibrated scale., TASK 2 : Measurement of cell/battery voltage using Digital Multimeter, 1 Plug the black colour probe into the COM socket on, the digital multimeter and red colour probe into the V, mA socket., , 3 Pick one of the labelled battery and measure the, terminal voltage as shown in Fig 7a and b., Fig 7a, , 2 Turn the multi meter knob to the DC Voltage selection, as shown in Fig 6a and b., Fig 6a, , 4 Observe the reading displayed on the digital meter, and record it in Table 2., Table 2, Label, No, , Fig 6b, , Voltage marked, on the cell/, battery, , Meter range Measured, selected, reading, , 5 Repeat step 3 and 4 for other labelled batteries also., Note: For accurate measurement, the voltage, range selector of digital meter may be, readjusted suitably., Note: Most digital multimeter power up in Auto, range mode. This automatically selects a, measurement range based on voltage present., , 6 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.4.31, , Copyright Free, Under CC BY Licence, , 51

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Electronics & Hardware, Electronics Mechanic - Cells & Batteries, , Exercise 1.4.32, , Charge and discharge the battery through load resistor, Objectives : At the end of this exercise you shall be able to, • check the voltage of each cell with a voltmeter in a lead acid battery, • check the level and top up electrolyte in lead acid battery, • determine the battery condition with a high rate discharge (H R D) tester after one hour charging, • check and clean the battery terminals, • connect and charge the battery by the constant current method, • connect and charge the battery by the constant potential method, • discharge the battery through load resistor., Note: The instructor has to mark the cells with, serial numbers suitably., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, •, •, , Trainees tool kit, Voltmeter 0-15V MC, Ammeter 0-10A MC, Hydrometer, High rate discharge tester, 12V Battery charger, Low voltage DC power, supply (0-3V) 10A, Variable resistor 10 ohms,, 5A capacity, , - 1 Set, - 1 No, - 3 Nos, - 1 No, - 1 No, - 1 No, - 1 No, - 2 Nos, , •, •, •, •, , Safety goggles, Lead acid battery 12 volts, Lamp Bank (240V, 1KVA), DPIC 16A, , - 1 No, - 1 No, - 1 No, - 1 No, , Materials/Components, •, •, •, •, •, •, , Distilled water (450ml), Petroleum jelly, Sandpaper (‘Zero’ grade), Test leads with crocodile clips, Hydrogen peroxide, Clips, , - 1 Bottle, - as reqd, - as req, - 1 pair, - as reqd, - 1 pair, , Safety precaution: Wear the goggles to protect, eyes from acid or any dust particles., , PROCEDURE, TASK 1 : Inspection of the battery electrolyte level, 1 Visually inspect the outside body for any physical, damage or bulging; Clean the terminals, if corroded,, with sandpaper: if sulphated, clean with wet cotton, waste or with soda bicarbonate., 2 Measure voltage across each cell using DC voltmeter, and record in Table 1., Do not scrape the battery terminal by any metal, strip; it may damage the terminal., 3 Unscrew and remove all the vent plugs; keep them, separately and check the level of electrolyte in all cells., Do not clean the battery top surface keeping, the vent plugs open. The accumulated dirt may, fall inside the cells and form sediments., 4 Top up the electrolyte to the marked level in all the cells, with distilled water., 5 Insert the Hydrometer rubber nozzle inside the cell,, press the bulb, suck electrolyte and release to allow, the float to measure specific gravity as shown in Fig 1., , 6 Observe and check the initial specific gravity of the, electrolyte of each cell using the above step as shown, in Fig 1 and record in Table1., Do not use a high rate discharge tester for, measuring initial voltage., 7 Connect the battery charger's +ve lead to the +ve, terminal of the battery and the -ve lead of the charger, to the -ve terminal of the battery as shown in Fig 2., 8 Adjust the battery charger output voltage equal to or, a little higher than the voltage of the battery to be, charged., , 52, , Copyright Free, Under CC BY Licence

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11 Switch OFF the battery charger and disconnect the, battery when fully charged; Fit the vent plugs, clean, the outer surface with wet cloth and apply petroleum, jelly to the terminals., 12 Check the battery for its working voltage under load, using a high rate discharge tester for a short period., as shown in Fig 3., , 9 Set the charger voltage to produce the determined, value of initial charging current and record it in Table, 1., Follow the manufacturer's recommendation for, current setting for charging as well as, discharging., , Do not keep a high rate discharge tester for a, long period, say more than five seconds., , 10 Observe the voltage of each cell of the battery and, specific gravity of the electrolyte at regular intervals, (say ONE hour); record the observations in Table 1., , 13 Record the voltage reading shown by the high rate, discharge tester= ---------------V., , 14 Get the work checked by the Instructor., Table 1, Cell, No., , Initial condition, Voltage, , Charging Specific Gravity, current, , Charged condition after, 1 Hr, , V, , SP, , 2 Hr, , V, , SP, , 3 Hrs, , V, , SP, , 4 Hrs, , V, , SP, , 5 Hrs, , V, , SP, , 1, 2, 3, 4, 5, 6, TASK 2 : Discharging the battery through load resistor, 1 Check the specific gravity and voltage before, discharging., 2 Connect the load resistors to the battery and meter as, shown in Fig 4., , 4 Record the observations in Table - 2., 5 Read and record, the current voltage and specific, gravity at regular interval say one hour in Table 2., Do not discharge the battery beyond the, minimum value of voltage say 1.75V., 6 Check the specific gravity and voltage after discharge., 7 Check and compare the differences of specific gravity, and voltage before and after discharging the battery., 8 Stop the discharge when the battery reaches below, 1.75 volts., , 3 Switch ON the circuit for a short time (15 to 30 sec) and, observe the ammeter readings., , 9 After discharge, recharge the battery immediately., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.4.32, , Copyright Free, Under CC BY Licence, , 53

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Table 2, Time after, , Load Current, I in amps, , Changed Condition after Discharge, Specific Gravity, , Voltage, , 30 Sec, 60 Sec, 90 Sec, 10 Get the work checked by the Instructor., , 54, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.4.32, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Cells & Batteries, , Exercise 1.4.33, , Maintain the secondary cells, Objectives : At the end of this exercise you shall be able to, • check and inspect the battery type, voltage and rating details, • clean the battery, test battery condition, electrolyte level and charge the battery., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Trainees tool Kit, Hydrometer, Voltmeter 0-15V DC MC type, Digital multimeter with probes, , Materials/Components, - 1 Set, - 1 No, - 1 No, - 1 No, , Safety precaution: Always wear the necessary, protective clothing when working with a battery,, especially gloves and safety goggles., •, , • Lead acid battery 6V/12V 100 AH, • Distilled water 500 ml, • Petroleum jelly, • Cleaning cloth, • Cleaning brush 2 inch, • Goggles, • Hand gloves, • Baking soda, , - 1 No, - as reqd, - as reqd, - as reqd, - 1 No, - 1 No, - 1 No, - as reqd, , •, , Do not wear metallic watch strap or bangles while, working with batteries., , •, , Carry out the exercise in a well ventilated, dry and level, place., , Do not keep the screw driver, spanners or any tools on, the battery, as it may short circuit the terminals., , PROCEDURE, TASK 1 : Inspection of the battery type, terminal voltage and Ampere hour rating, 1 Examine the outside appearance of the battery., 2 Observe the details marked in the label on battery., 3 Check the battery type, voltage and ampere hour rating, and note down the details in Table - I., 4 Inspect for any fluid in and around the battery for, elctrolyte is spilling or leaking out., , 6 Look closely for loose or damaged terminal clamps;, ensure that the battery cables are intact. (Broken or, frayed cables are extremely hazardous-Replace if, found damaged)., 7 Tight all wiring/connections from the battery., 8 Get the work checked by the Instructor., , 5 Check cables, clamps, and housing for obvious, damage or loose connections., Table - 1, Sl No., , Battery Type, , Voltage, , Ampere hour Rating, , Remarks, , TASK 2 : Testing the battery condition, 1 Discount the loads from the batteries and clean the, terminals using the cleaning brush dipped in the mixture, of baking soda and water., 2 Use the cleaning cloth and wipe the battery clean., , 3 Measure the Voltage across battery terminals using, Digital multimeter., 4 Compare the measured voltage with the readings, mentioned in the Chart-1., 5 Get the work checked by the Instructor., 55, , Copyright Free, Under CC BY Licence

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Chat showing the relation with open circuit voltage, specific gravity and percentage of charge, Open - Circuit Voltage, 48V, , Specific gravity, corrected to, , Percentage of, Charge, , 6V, , 8V, , 12V, , 24V, , 36V, , 6.37, , 8.49, , 12.73, , 25.46, , 38.20, , 50.93, , 1.277, , 100, , 6.31, , 8.41, , 12.62, , 25.24, , 37.85, , 50.47, , 1.258, , 90, , 6.25, , 8.33, , 12.50, , 25.00, , 37.49, , 49.99, , 1.238, , 80, , 6.19, , 8.25, , 12.37, , 24.74, , 37.12, , 49.49, , 1.217, , 70, , 6.12, , 8.16, , 12.27, , 24.48, , 36.72, , 48.96, , 1.195, , 60, , 6.02, , 8.07, , 12.10, , 24.20, , 36.31, , 48.41, , 1.172, , 50, , 5.98, , 7.97, , 11.89, , 23.92, , 35.87, , 47.83, , 1.148, , 40, , 5.91, , 7.88, , 11.81, , 23.63, , 35.44, , 47.26, , 1.124, , 30, , 5.83, , 7.77, , 11.66, , 23.32, , 34.97, , 46.63, , 1.098, , 20, , 5.75, , 7.67, , 11.51, , 23.02, , 34.52, , 46.03, , 1.076, , 10, , TASK 3 : Testing electrolyte level and charging the battery, 1 Open the vent caps from the battery., 2 Check the electrolyte level inside the battery visually, for the top of plates are exposed or immersed in, electrolyte in all the cells., Note: If the plates are exposed, top up of, distilled water is required., , 4 Repeat the above steps for all the cells and ensure, the same level in all the cells of the battery; tightly, close all the vent caps., 5 Connect the battery charger and set the battery under, charge with recommended voltage/current settings., 6 Get the work checked by the Instructor., , 3 Add distilled water till the plates are covered approx 3, mm., TASK 4 : Maintaining the battery, 1 Check that all vent caps of the battery are tightly in, their place., , 4 Clean the battery top with brush using the solution of, baking soda and water., , 2 Remove the connectors from the battery terminal by, moving them from side to side and gently pulling them, up., , 5 Clean with water and dry using a clean cloth., , 3 Dip the wire brush into the solution of baking soda, mixed with distilled water and clean the terminals of, the battery as shown in Fig 1., Fig 1, , 56, , Note: When cleaning do not allow any cleaning, solution or other foreign matter to get inside, the battery., 6 Apply grease to both the battery terminals and, reconnect the clamps to the terminals correctly., 7 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.4.33, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Cells & Batteries, , Exercise 1.4.34, , Measure the specific gravity of electrolyte using hydrometer, Objectives: At the end of this exercise you shall be able to, • Measure the specific gravity of electrolyte in lead acid battery., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, , Lead acid battery 12V/60 AH, Battery charger 12V, Hydrometer, MC voltmeter 0-15V, MC Ammeter 0-5A, Safety googles, , Materials/Components, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, , Distilled Water 500 ml, Concentrated sulphuric acid, Clean Jar for mixing 1 Ltr.capacity, , - 1 Bottle, - 200 ml, - 1 No, , Safety precaution: Near the safety goggles to, protect eyes from acid or any dust particles., , PROCEDURE, 1 Visually inspect the top surface of the battery; clean, the terminals., , 4 Pump the electrolyte upto reference mark by pressing, the bulb., , Note: If sulphated clean with wet cotton waste, or with soda bicarbonate., , 5 Check the initial specific gravity of the electrolyte of, each cell using hydrometer and record it in Table 1., , 2 Unscrew all the vent plugs and check the level of the, electrolyte., , Note:, 1 In a fully charged lead acid cell the specific, gravity of the electrolyte should be 1.28 at, room temperature., , Don’t clean the battery top surface keeping the, vent plugs open . The accumulated dirt may, fall inside the cells and form sediments., 3 Insert the hydrometer rubber nozzle inside the battery, vertically as shown in Fig 1., , 2 When the specific gravity of electrolyte falls, down to about 1.150 the cell can be taken, as fully discharged., 6 Record the status of charge condition each cell in, Table 1., 7 Get the work checked by the instructor., , Table 1, Cell No., , Specific gravity, , Charge condition, , Remarks, , 1, 2, 3, 4, 5, 6, , 57, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Cells & Batteries, , Exercise 1.4.35, , Test a battery and verify whether the battery is ready for use or needs, recharging, Objectives : At the end of this exercise you shall be able to, • test a battery and verify whether the battery is ready for use, • verify whether battery needs recharge., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , Materials/Components, , Trainees tool kit, High rate discharge tester, Hydrometer, MC voltmeter 0-15V, Lead acid type 12V, , - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, , Cotton waste, Test probes with crocodile clip, , - as reqd, - 1 Pair, , PROCEDURE, TASK 1 : Testing the a battery and verifying whether battery is ready for use, 1 Clean the terminals; measure the cell voltage and, battery voltage using voltmeter; record the observations, in Table 1., , 6 If all the above test results are satisified, then the, battery is ready for use., , 2 Check the level of the electrolyte in the battery, 3 Measure the specific gravity of electrolyte of each 3, cell with hydrometer and record the observations in, Table 1., 4 Observe whether the specific gravity is 1.28., 5 See whether the level of electrolyte is above the, level of eletro plate., Table 1, Cell No., , Measured voltage, , Specific gravity, , Condition, , 1, 2, 3, 4, 5, 6, TASK 2 : Verifying whether battery needs recharge or not, 1 Check the battery for its working voltage under, load using a high rate discharge tester for a short, period say within 5 seconds., 2 Observe whether each cell voltage is below 1.8V., 3 Measure the specific gravity of electrolyte of each, cell with a hydro meter., 4 observe whether the specific gravity is below 1.24., 5 If all the test results are in the above condition then, the battery needs recharge., 58, , Copyright Free, Under CC BY Licence, , Remarks

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Electronics & Hardware, Electronics Mechanic - AC & DC Measuring Instruments, , Exercise 1.5.36, , Use the multimeter to measure various functions (AC V, DC V, AC I, DC I, R), Objectives : At the end of this exercise you shall be able to, • identify available ranges in the given multimeter, • measure voltage and current of DC supply, • measure voltage and current of AC supply, • measure resistance (continuity) of a switch., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Materials/Components, , Trainees tool kit, DC RPSU unit, 0-30V/5A, Auto transformer, 0-270V/1A, Digital multimeter with probes, , - 1 Set, - 1 No, - 1 No, - 1 Set, , •, •, •, , Battery 1.5V AA Size, Lead-acid battery, 12 volts, Assorted value of resistor, , - 1 No, - 1 No, - 5 Nos, , PROCEDURE, TASK 1: Study on Multi-meter, 1 In the given multi-meter, check the available ranges, scales and other information and record these details, in Table -1., , Table 1, a Name of the given multimeter & model number., b Manufacturer name., , 2 Check the symbol on meter indicating its placement, position. In the case of analog multimeter, carryout, mechanical zero setting of the meter., , c List of input socket available on the meter., d List the available measuring ranges and scale marking, on the meter., , 3 Connect the meter prods ensuring proper colour of, probes at meter terminals., , Table 1, DC Voltage, Range No., , Voltage Range, , AC Voltage, Range No., , DC Current, Range No., , Current Range, , Voltage Range, , AC Current, Range No., , Current Range, , Resistance Ranges:, Range No., , Ohms Range, , 59, , Copyright Free, Under CC BY Licence

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TASK 2: Measurement of DC voltage, 1 Set the meter range switch to measure cell voltages, and choose the scale for taking readings. Record the, chosen range position and scale in Table 2., , 3 Set the meter range to measure the unknown DC, voltage from the regulated DC power supply unit, (RPSU)., , 2 Measure and record the voltage of cell & battery in, Table 2., , 4 Measure the output voltage of RPSU. Change the set, range if necessary to measure the set RPSU voltage, more accurately. Record the measured voltage in, Table 2., Table 2: DC Voltage measurement, , Sl.No., , Source of DC Voltage, , 1, , AA size battery, , 2, , Battery, 12V/9V, , 3, , RPSU output, , Label Marked, set voltage, , Measured, voltage, , TASK 3: Measurement DC current, 1 Set the multimeter to measure an unknown DC current., 2 Connect the meter terminals as shown in Figure 1., 3 Measure and record the readings shown by the meter, in Table 3., 4 Change the set range if necessary to measure the, current more accurately., 5 Change the resistor value and measure different current, values in Table 3., Table 3: DC Current Measurement, Sl.No, , Set current range, , Measured, current, , 1, 2, 3, TASK 4: Measurement of AC voltage, 1 Set the multi-meter to measure higher AC voltage., , Table 4: AC voltage measurement, , 2 Connect the meter terminal to a variable AC source, (Auto-transformer)., , Sl.No, , 3 Measure and record the readings shown by the meter, in Table-4. Change the set range if necessary to, measure the voltage more accurately., 4 Change the set value of AC voltage and repeat step1 to step-3., , Set voltage range, , Measured, voltage, , 1, 2, 3, , TASK 5: Measurement of AC current, 1 Set the multi-meter to measure an unknown AC current., 2 Connect an Auto-transformer to the supply source and, set the output voltage to 50V, AC., 3 Connect the meter terminals as shown in Figure 2., 60, , 4 Measure and record the readings shown by the meter, in Table 5. Change the set range if necessary to, measure the current more accurately., 5 Change the resistor value and measure different current, values in Table 5., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.5.36, , Copyright Free, Under CC BY Licence

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Table 5: AC current measurement, Sl.No, , Set current range, , Measured, current, , 1, 2, 3, 4, 5, 6, 7, 8, , TASK 6: Measurement of resistance of a switch, 1 Set the multi-meter to continuity range., 2 Check the switch under both two condition., 3 In one position, the meter shows zero reading and, gives sound that means the switch is in ON position., 4 In another position, the meter shows 1 at the left side, of the display that is high resistance and the switch is, in OFF position., 5 Record the observations in the Table 6., Table 6: Measurement of resistance of a switch, Sl.No, , Condition of switch, , 1, , ON, , 2, , OFF, , Resistance, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.5.36, , Copyright Free, Under CC BY Licence, , 61

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Electronics & Hardware, Electronics Mechanic - AC & DC Measuring Instruments, , Exercise 1.5.37, , Identify the different types of meter for measuring AC & DC parameters, Objectives : At the end of this exercise you shall be able to, • identify the type of instruments (AC/DC) and their function from the dial markings., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , Voltmeter 0 - 300 V MC, Ammeter 0-15 A MI panel board type, Ammeter 0 - 5A MC, Ohmmeter-shunt and series type, Watt meter 0-400 kW, , - 1 No, - 1 No, - 1 No, - 1 each, - 1 No, , •, •, •, •, , Frequency meter 45-55Hz, Multi-range voltmeter, MC 0-75, 150, 300 & 600 V, Multi-range voltmeter, MI 0-150, 300 and 600 V, Power factor meter, 0.5 lead 0-0.5V lag, , - 1 No, - 1 No, - 1 No, - 1 No, , PROCEDURE, 6 Get the work checked by the Instructor., , The instructor has to label the meters serially, before issued to trainees. Provide the chart, showing symbols and their respective meaning, for identification and reference., 1 Pick one of the labelled meter; observe the alphabet/, function marked on the center of the dial/panel to, identify the parameter/function., 2 Draw the sketch of the meter and record the observation, in Table 1., 3 Observe the small symbols printed at the bottom line, on the dial/panel., 4 Refer to the chart - 1, identify and compare the symbol, and its meaning; record it in Table 2., 5 Repeat the above steps for all the remaining meters, and record the observations in Table 2., , Table 1, Label No., , Sketch of the, meter, , Type, AC/DC, , Function, , Single/, multi range, , Single/, multi scale, , Remarks, , Table 2, Sl.No., , Symbol on the meter, , Description, , Sl.No., , 1, , 6, , 2, , 7, , 3, , 8, , 4, , 9, , 5, , 10, , Symbol on the meter, , 62, , Copyright Free, Under CC BY Licence, , Description

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Electronics & Hardware, Electronics Mechanic - AC & DC Measuring Instruments, , Exercise 1.5.38, , Identify the different controls on the CRO front panel and observe the function, of each control, Objectives: At the end of this exercise you shall be able to, • identify operating controls on the CRO front Panel, • observe the function of each front panel control., , Requirements, Tools/Equipments/Instruments, •, , 0-20 MHz Dual channel CRO-with, probe kit and operating manual, , Materials/Components, - 1 Set, , Note: The instructor has to take the xerox copy, of front panel of CRO available in the lab; mark, serial numbers for each control and issue to, tainees., Provide the operating manual of the CRO to, refer the function of each control., , PROCEDURE, TASK 1 : Identification of operator controls on the CRO front panel, 1 Keep the CRO on the work bench; observe the name, of controls printed on each of them on the panel., , 3 Refer to the operating manual and note down the, functions in Table 1., , 2 Refer to the serial numbers marked on the xerox copy, for each control from power ON/OFF, note down the, name in the Table 1., , 4 Repeat steps 2 and 3 for all controls on the CRO front, panel., , Fig 1, , 63, , Copyright Free, Under CC BY Licence

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Table I, Label No., , Name of the Front Panel Controls, , Remarks, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 5 Get the work checked by the instructor, TASK 2 : Observation of function of each front panel control in CRO, 1 Connect the power cord to the CRO and plug it to AC, mains supply., 2 Switch ‘ON’ and allow warm up time till the trace, appears on the screen., 3 Adjust intensity and focus controls for a observing, effect of size and brightness of trace on the screen,, record observation in Table 2., 4 Re adjust the above controls for a sharp trace on the, screen., , 10 Record the observations in Table 2., Table 2, Sl., No., , Name of the, control, , 1, , POWER - ON/OFF, , 2, , Intensity, , 3, , Focus, , 5 Adjust time/Div control, observe the effect of trace, movement and bring back to the previous setting;, record observations in Table 2., , 4, , Time/Div, , 5, , Horizontal position, , 6 Adjust horizontal position control, observe the shifting, of the trace, bring back to the previous setting; record, observations in Table 2., , 6, , Vertical position Ch-1, , 7, , Vertical position Ch-2, , 7 Repeat the step 6 for vertical position control and, record observations in Table 2., , 8, , Trigger Int./Ext., , Effect of, display on, screen, , 8 Connect the output of built in calibration signal to the, channel 1 input using suitable cable/CRO probe., , 11 Repeat the steps for remaining controls and record, observations., , 9 Observe the waveform, vary the settings of above, controls one at a time and observe the effect on the, display., , 12 Get the work checked by the Instructor., , 64, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.5.38, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - AC & DC Measuring Instruments, , Exercise 1.5.39, , Measure VDC, VAC, time period using CRO sine wave Parameters, Objectives : At the end of this exercise you shall be able to, • measure D.C. voltage (VDC), • measure the values of AC voltage (VP-P), • measure the time period of a sine wave parameters., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Trainees tool kit, Oscilloscope, 20MHz, RPS, 0-30V, 1A, Voltmeter/Multimeter, , Materials/Components, - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, •, •, , Step-down transformer, 230V/12V,, 200 mA, Probes for Oscilloscope, Dry cell, 1.5 V, Hook-up wire, , - 1 No, - 1 No, - 1 No, -1m, , PROCEDURE, TASK 1 : Measurement of DC voltage, 1 To measure the voltage of the dry cell, set the volt per, division to 0.5 V/Div., , 4 The magnitude of the EMF of the cell is given by,, , 2 Connect the black (ground) probes to the negative end, and the red probe to the positive end of the dry cell., , 5 Now, reverse the leads, the trace will move down by 3, divisions indicating the voltage is negative and again, the EMF of the cell = 3 x 0.5 = -1.5V., , 3 Observe the trace on the screen. It will be observed, that the trace will move up by 3 divisions from the, center line indicating the voltage in positive., , 6 Instead of a dry cell use the regulated DC power supply, (0-30V) and repeat steps-2 to step-4 and record the, observations in Table 1., , Table 1, Sl No., , Power supply, voltage in volt, , Attenuator, position, , No.of, divisions, moved up, , No.of, divisions, moved down, , Voltage, measured, in CRO, , 1, 2, , 65, , Copyright Free, Under CC BY Licence

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TASK 2 : Measurement of AC voltage, 1 To measure AC voltages, set the AC-DC switch in, (out) AC position., 2 Set the volt per division to 50V, if the input voltage is, unknown and adjust the time base switch to 10, milliseconds., 3 Connect a step-down transformer secondary leads, one to the common input terminal to the ground side, for signal source and another lead to the input terminal., 4 Switch ON the oscilloscope, adjust the trace to center, and focus intensity controls for a sharp bright trace., , 6 Observe the wave form that appears on the screen., 7 Increase the vertical sensitivity by the Volts/Div switch, such that the wave form display is clearly seen., 8 Measure the peak to peak voltage of the displayed, waveform, by counting the number of divisions between, positive and negative peaks. Record the observations, in Table 2., 9 Determine the RMS value of the voltage by measuring, the voltage across the secondary of the transformer, using multimeter., , 5 Switch ON and energize the primary of the transformer., Table 2, Sl No., , Attenuator, switch range, Volts/Div, , No.of, divisions, counted, peak, voltage, , No.of, divisions, counted, peak to peak, voltage, , Peak, voltage, , Peak to, peak, voltage, , RMS, voltage, (measured, by, voltmeter), , 1, , TASK 3 : Measurement of time period and frequency of sine wave, 1 After measurement of peak to peak voltage in Task 2,, Where, T is the time period in seconds. Enter the, turn the time base vernier (1) to CAL position., values in Table 3., 2 Set the Time/Div switch to a range where the signal, can be clearly seen., , 5 Formula to be used:, , 3 Count the number of divisions horizontally for one, complete cycle and record the same in Table 3., , Time period (T) = Time base range x No. of divisions/, Cycles., Frequency (f) = 1/T Hertz., , 4 Calculate the frequency of the displayed wave form, the using formula,, Table 3, Sl No., , Attenuator switch range, Time/Div, , No.of divisions, per cycle, , Time, period (T), , Frequency f=1/T, Hertz, , 1, , 66, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.5.39, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - AC & DC Measuring Instruments, , Exercise 1.5.40, , Identify the different controls on the function generator front panel and observe, the function of each controls, Objectives: At the end of this exercise you shall be able to, • identify the different front panel control in function generator, • observe the function of each front panel control in function generator., , Requirements, Tools/Equipments/Instruments, •, •, , 0-20MHz CRO-dual channel with, probe kit and operating manual, Function generator with operating, instruction manual, , Materials/Components, - 1 Set, - 1 No, , The instructor has to use the xerox copy of the, front panel of function generator available in, the lab. Mark each control with serial numbers, for identification/function of them and provide, to trainees., , PROCEDURE, TASK 1 : Identification of different controls on the Function generator front Panel, 1 Keep the function generator on the work bench; observe, the name of controls printed on each of them., 2 Start from label No.1, refer to the identify and note, down name of the control in Table 1., , 3 Repeat to the operating/Instruction manual of the, function generator and note down the function control, in Table 1., 4 Repeat the above step for all the labelled controls and, record their name in Table 1., 5 Get the work checked by the Instructor., , Table - 1, Label No., , Name of the Front Panel Controls, , Function, , 1, 2, 3, 4, 5, 67, , Copyright Free, Under CC BY Licence

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Table - 2, Label No., , Name of the Front, panel control, , Function of control, waveform/frequency, amplitude, , Remarks, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, Note:, • The instructor has to guide the trainees for, identification of controls/sockets or, switches on the rear panel of the function, generator and record them in Table 3., • If more controls are available, make the, trainees to observe under separate task, following above procedure., , TASK 2 : Observe the functioning of each control on the front panel of function generator, 1 Connect the output of function generator to the channel1 input of CRO as shown in Fig 2 using BNC cable/, connector., , 3 Switch ON the function generator; operate the, frequency select control, amplitude etc. One at a time, and observe the waveform on CRO screen by varying, their position., 4 Record the observation in table 2; operate other, controls, observe corresponding change in waveform/, frequency/amplitude and record them in Table 2., 5 Repeat the steps for all the controls on the front panel, and record observations., , 2 Switch ON the CRO; allow warm-up time, adjust, controls and prepare CRO for measurements., , 68, , 6 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.5.40, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.6.41, Electronics Mechanic - Soldering/Desoldering and various switches, Practice soldering on different electronic components, small transformer and, lugS, Objectives : At the end of this exercise you shall be able to, • tin the ends of hookup/flexible wires/lug terminals, • Solder different electronic components on lug terminals, • Solder a small transformer on a general purpose PCB., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Soldering iron 25W/240V, Trainees tool kit, Cleaning brush, 1/2inch, Step down transformer 240V/6V, 300mA, With flexible wire termination, , Materials/Components, - 1 No, - 1 Set, - 1 No, - 1 No, , •, •, •, •, •, •, •, , Lug board (Code No.103-06-LB), Single strand wire(hook-up-wire), Solder wire 60/40 18 SWG, Soldering flux, Gen purpose PCB (Type 107), Soldering iron stand, Electronic components assorted items, , - 1 No, -1m, - 25 gms, - as reqd, - 1 No, - 1 No, - as reqd, , Note:The instructor has to ensure that the, trainees keep the soldering iron on its stand, and no electrical leakage on its metal body;, Guide the trainees to keep the tip of the, soldering iron bit tinned., , PROCEDURE, TASK 1 : Tinning the lug terminals, 1 Visually check the lug terminals on the lug board are, clean and bright., 2 Scrape the dirt/oxide layer on both sides of the lug, terminal using a knife and clean all the lug terminals, on the lug board., , Note: Properly tinned tip of the soldering iron, bit is in bright shining, silvery colour; The molten solder on the tip of soldering iron is, essential for efficient transfer of heat for soldering or desoldering process., , 3 Apply a thin layer of flux on the face of lug terminal as, shown in Fig 1a., , 4 Touch the lug by molten solder on the bit of soldering, iron at the lug no.1 as shown in Fig 1(b)., 5 Hold the tip of solder wire at the outer face of the lug, as shown in Fig 1b., 6 Take out the solder wire within 2 to 3 seconds time as, the solder melts on the lug and take out the soldering, iron tip from the lug., 7 Allow the molten solder to solidify over the lug., Do not blow air to cool the solder on the lug., 9 Get the work checked by the Instructor., , TASK 2: Soldering of wire/electronic components on lug terminals, 1 Mark 10 mm and skin the insulation at both ends of, hook up wire piece., 2 Scrape the conductor using knife, apply flux and tin, the conductor ends., 3 Insert and bend the tinned wire in lug 1 hole as, shown in Fig 2. (side entry method)., 69, , Copyright Free, Under CC BY Licence

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4 Touch the lug by the molten solder on the bit of, soldering iron a shown in Fig 3a and hold it for 2, seconds., , Precaution: Due care to be exercised with the, hot soldering iron, molten/melting solder., Keeping the soldering iron tip for more than 23 seconds will damage the insulation of the, wire., 6 Allow the molten solder to solidify with the wire joined, on the lug terminal., 7 Do not shake the wire till the soldered joint on the lug, terminal becomes smooth and shiny., 8 Repeat the above steps for tinning all the lugs on the, lug board., 9 Select the electronic component to be soldered on, the lug terminal (Resistor/Diode)., 10 Scrape/clean both ends of the component and tin, them., 11 Insert the timed lead into lug terminal 2, as shown in, Fig 2., 12 Repeat steps 4 to 7 for a smooth and shiny soldered, joint., , 5 Apply the tip of solder wire on the lug; as the solder, starts melting, take out the solder and within 2 to 3, seconds remove the soldering iron tip from the joint., , 13 Get the work checked by the Instructor., , TASK 3: Soldering the transformer on PCB/Lug board, 1 Position the transformer on the component side of, the general purpose PCB as shown in Fig 4 and tie it, on PCB using hookup wire., , 2 Mark 10 mm and skin the insulation at the end of wire;, twist the bunch of multi stranded conductors into a, single core and tin it., 3 Repeat the above step for all the wires on primary, and secondary sides of the transformer., 4 Identify suitable points on the PCB for soldering the, primary and secondary wires., 5 Insert the timed terminals at the identified points and, solder them correctly., 6 Arrange the lead dress of wires neatly on the PCB, after soldering work., 7, , Get the work checked by the Instructor., Follow steps in Task-2 to solder the transformer, terminals to the lug board., , 70, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.6.41, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.6.42, Electronics Mechanic - Soldering/Desoldering and various switches, Practice soldering IC bases on PCBs, Objectives: At the end of this exercise you shall be able to, • soldering IC bases on PCB, • inspect the soldered joints of IC bases on the PCB., , Requirements, Tools/Equipments/Instruments, • Trainees tool kit, • Soldering Iron, 25W, • Magnifier with lamp and crocodile, clip fixture attachment, , Materials/Components, - 1 Set, - 1 No, - 1 No, , •, •, •, •, •, •, •, •, •, , General Purpose PCBs (IC base, fixing type), IC base (8 pin or 14 pin), Solder Wire 60/40 18 SWG, Flux, Soldering iron stand, Desoldering Wick, Soldering tip cleaning sponge, Cleaning brush, IPA solution, , - 1 No, - 1 No, - as reqd, - as reqd, - 1 No, - as reqd, - as reqd, - 1 No, - as reqd, , PROCEDURE, TASK 1: Soldering the IC base on PCB, 1 Inspect the copper clad/solder side and component, side of the selected PCB is suitable for soldering work., , 2, , 2 Check all the pins of the IC base in correct shape as, shown in Fig 1a & b., 1a, , 5 Prepare the soldering iron for soldering work; apply a, small quantity of flux on each pin of the IC base., 6 Solder the pin no. 1 onto the pad quickly within 1 to 2, seconds time., Safety precaution: Avoid over heating the PCB, track/pad., If the time taken to solder the pin is more, the, heat produced by the soldering iron tip will, make the pad/track to peel off the PCB damaged, permanently., , 1b, , 7 Solder the remaining pins of the IC base quickly., Caution: Do not apply more solder on the pin., Excessive solder may bridge the pads and, short circuit them., 3 Plan and decide the location on the PCB for the IC, base soldering work., , 8 Clean the flux and other residue on the soldered pins, using the IPA solution with cleaning brush., , 4 Insert the IC base pins through the component side as, shown in Fig 2 and press till it sits correctly on the PCB., , 9, , Get the work checked by the Instructor., 71, , Copyright Free, Under CC BY Licence

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TASK 2: Inspection of soldered IC base pins, 1 Keep the soldered PCB under the magnifying lens, using the crocodile clip fixture attachment as shown in, Fig 3., Fig 3, , 2 Switch ON the lamp, adjust the height of lens and, observe the soldered pins with clarity., 3 Inspect the pins are soldered correctly and no excessive, solder is bridging the pin connections/pads or tracks, causing short circuit., 4 Desolder the excess solder if found bridging between, pins/pads/tracks using soldering iron., 5 Clean the desoldered spot and inspect under the, magnifier., 6 Ensure that all the pins of IC base is correctly soldered, and no defect found., 7, , 72, , Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.6.42, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.6.43, Electronics Mechanic - Soldering/Desoldering and various switches, Practice desoldering using pump and wick, Objectives : At the end of this exercise you shall be able to, • desoldering components from PCB using desoldering pump, • desoldering component using desoldering wick., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Trainees tool kit, Soldering iron, 25W, Desoldering pump (plunger type), Heat sink plier, , Materials/Components, - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, •, •, , Desoldering wick, Cleaning solution (IPA), Flux, Cleaning Brush, Safety goggles, Crocodile clip, Assembled PCB board for, Desoldering work, , - as reqd, - as reqd, - as reqd, - 1 No, - 1 No, - 1 No, - as reqd, , Note: Check the correct functioning of, desoldering pump by closing the nozzle and, press the plunger; feel the air pressure. Keep, the nozzle closed by a finger and release the, button and feel the suction to conform correct, working., , PROCEDURE, TASK 1: Desoldering components from PCB using desoldering pump, 1 Clean the PCB using brush; locate the component to, be desoldered fro the PCB as shown in Fig 1., , 2, , 2 Mark the component lead soldered pad/track on the, solder of PCB., 3 Prepare the soldering iron for desoldering work; touch, the hot soldering iron top on the marked solder joint as, shown in Fig 1., 1, , 5 Empty the desoldering pump into the trash so that, pump is ready for next desoldering ping. (Refer Fig 3), 3, , 4 Press the plunger, lock and hold the desoldering pump, in left hand; keep the nozzle on the desoldering point,, hold the desoldering pump firmly and release the, button to suck the molten solder as shown in Fig 2., , 73, , Copyright Free, Under CC BY Licence

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6 Repeat steps 3 to 5 on the other marked point also to, desolder the molten solder on the joint., , 8 Get the work checked by the Instructor., , 7 Visually inspect for leads of the component are free, from the pad and pull the component from top side of, PCB using crocodile clip., , TASK 2: Desoldering components using desoldering wick, 1 Follow the steps 1 to step 3 of task 1., 2 Unwind few inches of solder wick from the coil as, shown in Fig 4., Fig 4, , 5 Place a hot soldering iron tip over the braid at the, desired pin as shown in Fig 7 and allow the molten, solder is absorbed by the desolder wick., 7, , 3 Dip the end of wick into the flux and make for a clean, removal as shown in Fig 5., , Safety precaution: Do not touch the hot solder, wick; keep it away from the PCB., 6 Remove the soldering iron and the braid quickly from, the PCB; discard the used portion of the wick., , 5, , 7 Observe the pad/track on the PCB and ensure the, component lead is desoldered from that point., 8 Repeat the above steps for other terminals of, component to be desoldered/removed., 9 Clean the PCB using IPA solution with brush., 10 Get the work checked by the Instructor., , 4 Place the braid over the marked soldered joint as, shown in Fig 6 for desoldering the component., 6, , 74, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.6.43, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.6.44, Electronics Mechanic - Soldering/Desoldering and various switches, Join the broken PCB track and test, Objectives : At the end of this exercise you shall be able to, • repair the broken PCB track and test the continuity., , Requirements, Tools/Equipments/Instruments, •, •, •, , Trainees tool kit, Soldering iron 25 watts/240 VAC, Digital multimeter with probes, , Materials/Components, - 1 Set, - 1 No, - 1 No, , •, •, •, •, •, •, •, •, •, , Tracks cut broken PCB, Hook up wire, Epoxy tube, Emery cloth /paper, Magnifying glass, Solder flux, Rosin cored solder 60/40, Cleaning brush, IPA solution, , - 1 No, - as reqd, - 1 No, - as reqd, - 1 No, - as reqd, - as reqd, - 1 No, - as reqd, , PROCEDURE, 1 Identify and inspect the edges of the broken track on, PCB using magnifying glass as shown in Fig 1., 1, , 8 Check the continuity of the repaired track on the PCB., Precaution: Avoid bridging/shorting with the, adjacent tracks/pads on the repaired PCB., 2, , 2 Mix the Epoxy according to the manufacturer’s, instructions and apply a little quantity to one side of the, PCB., , 9 Inspect the repaired track using magnifying lens and, also the continuity of track using DMM., , 3 Position them correctly and Press the two halves of the, broken PCB together and hold them until the epoxy, sets hard., , Apply appropriate heat to melt the solder. Too, much heat will cause the copper pads/tracks, to peel off the PCB., , Hold both ends together without shaking; the, epoxy will set in a few seconds, but should wait, for thirty minutes for hardening before, proceeding to next step., , 10 Join the other tracks following above steps; finally, clean the tracks on the PCB using IPA solution with, brush., , 4 Scrape/clean the solder mask coating on the broken, edges of PCB tracks to be joined., , 11 Get the work checked by the Instructor., 3, , Sand the ends of these traces until bright copper, shows clearly., 5 Plug the soldering iron into mains socket and wait for, a while to get ready for soldering work., 6 Cut a piece of hookup wire, take out the bare conductor;, scrape it and tin the conductor., 7 Use tweezers and keep the tinned wire over the joined, PCB track bridging both sides, solder it along the track., 75, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.6.45, Electronics Mechanic - Soldering/Desoldering and various switches, Identify and use SPST, SPDT, DPST DPDT, tumbler. push button, toggle , piano, switches used in electronic industries, Objectives : At the end of this exercise you shall be able to, • identify SPST, SPDT, DPST, DPDT tumbler, push button, toggle and piano switches, • test all the switches., , Requirements, Tools/Equipments/Instruments, •, •, , Trainees Tool Kit, Digital multimeter with probes, , Materials/Components, - 1 Set, - 1 No, , •, •, •, •, •, •, •, •, , SPST switch 240V/6A, SPDT Switch 240V/15A, DPST Switch 240V/15A, DPDT Switch 240V/15A, Tumbler switch, 1 pole, 240V/16A, Push button switch 240V/6A, Toggle Switch 240V/6A, Piano Switch 240V/6A, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , PROCEDURE, The instructor has to label the different types of, switches used for this exercise., , 3 Repeat the steps 1 and 2 for the remaining labelled, switches and record it in Table 1., , 1 Pick one of the labelled switch from the lot, identify the, name, type and record it in the table 1., , 4 Note down the uses of each switch and also draw the, free hand sketches of the switches., , 2 Refer to the chart (Fig 1 to 8) compare verify the details, and record it in the Table., , 5, , Get the work checked by the Instructor., , Table 1, S.No, , Name of Switch, , (1), , SPST, , (2), , SPDT, , (3), , DPST, , (4), , DPDT, , (5), , Tumbler, , (6), , Push button, , (7), , Toggle, , (8), , Piano, , Free hand sketch, , Uses, , 76, , Copyright Free, Under CC BY Licence, , Remarks

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Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.6.45, , Copyright Free, Under CC BY Licence, , 77

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Electronics & Hardware, Exercise 1.6.46, Electronics Mechanic - Soldering/Desoldering and various switches, Make a panel board using different types of switches for a given application, Objectives : At the end of this exercise you shall be able to, • draw a schematic diagram to show one electric bell controlled by one push button switch on the panel board., • fix different types of switches on the panel board, • wire the cable on the panel board according to the wiring diagram, • connect the cables in the accessories, • test the circuit., , Requirements, Tools / Instruments, , Materials, , • Screw driver 150mm, • Cutting pliers 200 mm, • Hand drilling machine with 3mm/, 4 mm drill bit each one, • Electrician Knife, • Side cutting plier, • Trainees tool kit, • Try square 150mm, • Poker 200 mm, , - 1 Set, - 1 No, , •, •, , - 1 No, - 1 No, - 1 No, - 1 Set, - 1 No, - 1 No, , •, •, •, •, •, •, •, •, , Wooden Panel Board available, in the section, Bell push switch 6A,240V, (Surface Mounting), Electric bell 240V, Wood Screws, SPST, SPDT, DPST, Tumbler switch, Toggle switch, Piano switch, , - 1 No, - 1 No, - 1 No, - as reqd, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , PROCEDURE, 1 Draw the layout diagram as shown in Fig 1., , 2 Collect the calling bell, SPST, SPDT, DPST, DPDT,, tumbler switch, bell push switch, toggle switch and, piano switch., 3 Place the switches and calling bell on the panel board, to suit the technical aspects., 4 Mark the position of switches on the panel board as, per the given layout., 5 Fix the switches and calling bell on the panel board., , 7 Give connections to Bell Push switch and Electric bell, as per connection diagram mentioned in Fig 2 and, test it., If it is incorrect make necessary changes., 8 After getting the approval of the instructor connect the, main supply and test the circuit., 9 Connect other switches for different applications and, get the formed circuit checked by instructor., , 6 Prepare the end termination of the cables. Insert them, into respective switches., , 78, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.47, , Identify the different types of active electronics components, Objectives : At the end of this exercise you shall be able to, • identify the different types of active electronics components by referring to the Pictorial representation., , Requirements, Tools/Equipments/Instruments, •, •, •, , Trainees Tool Kit, Magnifying Glass, Components Data Sheet with Lead, Identification, , Materials/Components, - 1 Set, - 1 Set, - 1 No, , •, •, •, •, •, •, •, •, •, , Diodes, Zener Diode, Transistor, Unijunction Transistor(UJT), Field Effect Transistor (FET), DIAC, TRIAC, Silicon Controlled Rectifier (SCR), Integrated Circuit (IC), , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , PROCEDURE, Note: Instructor shall label the active, components used for this exercise., , 3 Record the names, code No. and number of Pins of the, components in Table-1., , 1 Pick one of the labelled active components from the, given lot., , 4 Repeat the step-2 & 3 for the remaining components., 5 Get the work checked by the Instructor., , 2 Identify the components name from the Pictorial, representation (Shape, Leads, Colours)., Table 1, Sl.No., , Component, , 1, , LDR, , 2, , DIODE, , 3, , LED, , 4, , Zener Diode, , 5, , Transistor, , 6, , SCR, , 7, , TRIAC, , 8, , DIAC, , 9, , UJT, , 10, , JFET, , 11, , IC, , Free hand sketch, , Device symbol, , Remarks, , 79, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.48, , Measure the resistor value by colour code and verify the same by measuring, with multimeter, Objectives : At the end of this exercise you shall be able to, • determine resistance value by colour code, • determine resistance value by typographic/numeric code, • measure resistance value using ohmmeter/multimeter., , RequirementsRequirements, Tools/Equipments/Instruments, •, •, •, , Materials/Components, , Trainees Tool Kit, Multimeter with probes, Electrician Knife, , - 1 Set, - 1 No, - 1 No, , •, , Different types of fixed, value resistors, • Cotton cloth, , - 10 Nos, - 1 No, , The Instructor has to label the different values, of fixed resistors., , PROCEDURE, TASK 1: Calculation of Resistor value from Colour bands, 1 Pick one of the labelled resistor from the given lot and, identify the colours of bands starting from one end of, the resistor. Observe and record colours of the bands, in Table-1. (Refer chart 1), 2 Calculate the resistor value using color code and, record values in Table 1., , Do not touch the leads of the resistor while, measuring. This will make the meter show the, body resistance and not the resistor under, measurement., 7 Set the meter to the suitable resistance range., , 3 Also find the tolerance of the resistors and record., , 8 Check and record the values shown by the meter in the, Table-1., , 4 Scrape the resistor leads using knife to remove oxide/, varnish layers on the leads., , 9 Compare the measured value and the calculated, value of the resistor., , 5 Using a cloth wipe the leads to make them free from, moisture, oil, etc., , 10 Repeat steps-1 to 9 for the remaining colour coded, resistors., , 6 Short meter probes and adjust the zero set knob of the, meter and carry out the resistance zero setting of the, meter., , 11 Get the work checked by the Instructor., , Color, , 1st Band, (1st figure), , Chart 1, , 2nd Band, (2nd figure), , 3rd Band, (multiplier), , 4th Band, (tolerance), , Black, , 0, , 0, , 10°, , 1%, , Brown, , 1, , 1, , 101, , 2%, , Red, , 2, , 2, , 10, , Orange, , 3, , 3, , 103, , Yellow, , 4, , 4, , 104, , Green, , 5, , 5, , 105, , Blue, , 6, , 6, , 106, , Violet, , 7, , 7, , 107, , Gray, , 8, , 8, , 108, , White, , 9, , 9, , 109, , 2, , Gold, , 10-1, , 5%, , Silver, , 10, , 10%, , -2, , 80, , Copyright Free, Under CC BY Licence

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Table 1, Label, No., , First Band, , Second Band Third Band, , Colour Code Colour Code, , Resistance value using colour code, , Colour Code, , decoded, value, , Maximum, value, , Minimum, value, , Meter, Measured, Percentage, Value, , Tolerance, Colour, , TASK 2: Calculation of resistor value from Typographic Code, 1 Pick a typographically coded resistor from the given, lot. Record the printed codes value of resistance and, tolerance in Table-2. (Refer chart 2), 2 Check the nominal value of the resistor and record in, Table-2., 3 From the tolerance value noted, calculate and record, the minimum and maximum value of the resistor., , Standard Value, , 4 Repeat steps-1 to 3 for the remaining typographically, coded resistors., , Minimum Value, = 5600 - (5600 x 5%), , 5 Get the work checked by the Instructor., , = 5600 - 280, , Chart 2, Printed, Code, Format, , Meaning, , Example, of printed, Code, , = 5600 ohms, , = 5320 ohms, , Corresponding, Resistance, Value, , Maximum Value, = 5600 + (5600 x 5%), , xE, , X Ohms, , 1E, , 1 Ohms, , = 5600 + 280, , X, , X Ohms, , 100, , 100 Ohms, , = 5880 ohms, , xW, , X Ohms, , 56 W, , 56 Ohms, , xKy, , X.y K Ohms, , 4K7, , 4.7 K Ohms, , x.K, , X K Ohms, , 56K, , 56 K Ohms, , xMy, , X.y M Ohms, , 6M8, , 6.8 M Ohms, , xM, , X M Ohms, , 10 M, , 10 M Ohms, Table 2, , Label, No., , Printed code on the, Resistor, , %, Tolerance, , Resistance value using code, Standard, Value, , Maximum, Value, , Minimum, Value, , Meter measured, value, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.7.48, , Copyright Free, Under CC BY Licence, , 81

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.49, , Identify resistors by their appearance and check physical defects, Objectives : At the end of this exercise you shall be able to, • identify different types of fixed resistor by their appearance, • check the physical condition of fixed resistors., , Requirements, Tools/Equipments/Instruments, •, , Materials/Components, , Trainees Tool Kit, , - 1 Set, , •, , Assorted types & Values of Fixed, value resistors, , - 10 Nos, , The Instructor has to label the different types of, resistors used for this exercise., , PROCEDURE, 1 Pick one of the labelled resistor from the given lot., 2 Identify the resistor and observe the following:, , •, , Overall usability of Resistor, , 3 Record the observations in Table-1., , •, , Type of Resistor, , 4 Repeat step-2 & 3 for the remaining resistors., , •, , Lead Type, , 5 Get the work checked by the Instructor., , •, , Physical Defect Refer (Lead Defect Chart), Chart 1, Leads Defects, , Defect code, , Remarks, , Serviceable/unserviceable, , Lead Shaky, (LS), , May become electrically open,, while handling, bending, , Unserviceable, , Lead Weak, (LW), , Lead may get cut while handling,, Bending, , Unserviceable, , Strong Leads, (SL), , ----, , Unservicable, , Skin Coating Pealed off, , SPE, , Value might have deviated, , Unserviceable, , Body Cracked, , BCR, , May be open or value deviated, , Unserviceable, , CAP Shacking/Cracked, , CSH, , May be open or loose contact, , Unserviceable, , Body Charred or become, , BCH, , May be open, short, value deviated, , Unserviceable, , Table 1, Label, No., 1, 2, 3, 4, 5, , Type, Name, , Lead Type, , Physical Defect, code, , Remarks, , 82, , Copyright Free, Under CC BY Licence, , Usability of Resistor, Serviceable/unserviceable

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.50, , Identify the power rating of carbon resistors by their size, Objectives : At the end of this exercise you shall be able to, • identify the power rating of carbon resistors., , Requirements, Tools/Equipments/Instruments, •, , Trainees Tool Kit, , Materials/Components, - 1 Set, , •, , Resistors different type and wattages, , - 10 Nos, , The instructor has to label the different types,, sizes and ratings of carbon resistors used for, this exercise., , PROCEDURE, 1 Pick one of the labelled resistor from the given lot., 2 Identify the type of carbon resistors. Refer the chart 1, and observe the details of resistors., 3 Measure the sizes of Carbon resistor., , 4 Record the power rating of Carbon Resistor in Table1., 5 Repeat step-2 & 4 for the remaining resistors., 6 Get the work checked by the Instructor., , Chart 1, Power, Ratings, , Appearance, , Diameter, (mm), , Length, (mm), , Lead Length, (mm), , Lead, Diameter, (mm), , 0.125w, (1/8w), , 1.8, , 3, , 28, , 0.45, , 0.250w, (1/4w), , 2.5, , 6.5, , 28, , 0.6, , 0.5w, (1/2w), , 3.2, , 8.5, , 28, , 0.6, , 1w, , 5, , 11, , 28, , 0.8, , Table 1, Label No., , Type Name, , Size, , Power Rating in Watt, , Remarks, , 1, 2, 3, 4, 5, 83, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.51, , Practice on measurement of parameters in combinational electrical circuit by, applying Ohm’s Law for different resistor values and voltage sources, Objectives : At the end of this exercise you shall be able to, • verify Ohm's law and plot the graph., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, , Materials/Components, , Trainees Tool Kit, Soldering Iron, 230V/25 watts, Ammeter, 0-30m.A, DC, Ammeter, 0-10m.A, DC, Multimeter with probes, Regulated DC power supply 0-30V/2A, , - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, •, •, , SPST Toggle Switch/1A, Resistor, 1k /1W, Rosin cored solder, Soldering flux, Hook-up wires, Patch Cords, Lug Board, , - 1 No, - 3 Nos, -1m, - 1 Box, -2m, - 10 Nos, - 1 No, , PROCEDURE, TASK 1: Measuring current in the circuit with one resistor, 1 Check physical and electrical condition of the given, ammeter, meter probes, patch cords, toggle switch, soldered on the lug board., 2 Measure and record the resistance value in the, Table1., 3 Refer the circuit diagram-1 and assemble the circuit, using patch cords., , 5 Switch ON RPS and set the output voltage to 6 Volts., 6 Switch ON SPST, measure and record the circuit, current in the Table-1., 7 Keep the SPST to OFF. Increase the output of RPS to, 9 Volts and 12 Volts and record the circuit current., 8 Switch OFF SPST and RPS., 9 From the recorded readings in Table-1, plot a graph of, circuit voltage (V) versus circuit current (I) in a graph, sheet. (Fig 2), , 4 Calculate the theoretical current that is expected to, flow in the circuit for a DC supply of 6 Volts. Record the, calculated value in Table-1., Table 1, Sl. Resistance, No. Value (R), , Supply, Voltage, (V), , 1, , 6 Volts, , 2, , 9 Volts, , 3, , 12 Volts, , Circuit current (I), Calculated, , Measured, , 10 Get the work checked by the Instructor., , 84, , Copyright Free, Under CC BY Licence

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TASK 2: Measuring circuit current with varying circuit Resistances, 1 Refer the circuit diagram-3 and assemble the circuit, using suitable patch cords., , 5 Switch OFF SPST and connect the terminal "G" with, terminal "B". Switch ON SPST. Measure and record, the circuit current in Table-2, 6 Similarly measure the circuit current under the, connection of terminal "G" with "C"., 7 Switch OFF SPST and RPSU., 8 From the recorded readings in Table-2 plot a graph of, circuit current (I) versus Circuit resistance (R) in graph., , 2 Measure the circuit resistance and calculate the, theoretical current that is expected to flow in the circuit, for a DC supply of 12 volts. Record the calculated, value in Table-2., Table 2, Sl. Set Voltage Measured, Circuit current (I), No. (V), Resistance, Calcul, Measu, Value (R), ated, red, 1, , 12 Volts, , 2, , 12 Volts, , 3, , 12 Volts, , 3 Switch ON RPS and set the DC voltage to 12 Volts., 4 Connect the terminal "G" with terminal "A". Switch ON, SPST. Measure and record the circuit current in, Table 2., , 9 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.7.51, , Copyright Free, Under CC BY Licence, , 85

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.52, , Measurement of current and voltage in electrical circuits to Kirchhoff’s Law, verify, Objectives : At the end of this exercise you shall be able to, • verify the Kirchhoff's Current Law with three branch circuit, • verify the Kirchhoff's Voltage Law with one voltage source., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, , Materials/Components, , Trainees Tool Kit, Soldering Iron, 230V/25 watts, Milli-Ammeter, 0-10m.A, DC, Milli-Ammeter, 0-25m.A, DC, Multimeter with probes, Regulated DC power supply 0-30V/1A, , - 1 Set, - 1 No, - 3 Nos, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, •, •, •, •, , SPST Toggle Switch/1A, Resistor, 1k /1W, Resistor, 2.2k 1W, Resistor, 3.3k /1W, Rosin cored solder, Soldering flux, Hook-up wires, Patch Cords, Lug Board, , - 1 No, - 3 Nos, - 1 No, - 1 No, -1m, - 1 Box, -2m, - 10 Nos, - 1 No, , PROCEDURE, TASK 1: Verification of Kirchhoff's Current Law, 1 Check physical and electrical condition of the given, ammeter, meter prods, patch cords, toggle switch, soldered on the lug board., 2 Make the connections on the Lug board as per the, circuit diagram. (Fig 1), , 3 With the SPST in OFF position, set the output of Power, Supply to 12 volts., 4 Switch ON the SPST switch. Measure and record, currents, IT, IB1, IB2, and IB3 in Table-1., 5 Switch OFF SPST and PSU., 6 Write Kirchhoff's current equations at Nodes P and Q., Verify the equation using measured current values., 7 Get the work checked by the Instructor., , Table 1, RPS, Voltage, , Total circuit, Current IT, , Branch, Current, IB1, , Branch, Current, IB2, , Branch, Current, IB3, , Addition of Branch, Current IT = IB1+IB2+IB3, , 12V, , TASK 2: Verification of Kirchhoff's voltage law, 1 Check physical and electrical condition of the given, meter probes, patch cords, toggle switch soldered on, the lug board., 2 Measure and record the values of Resistor R1, R2 and, R3 in the Table., , 3 Make the connection on the Lug board as per the, circuit diagram. (Fig 2), 4 With the SPST in OFF position, set the output of Power, Supply to 12 volts., , 86, , Copyright Free, Under CC BY Licence

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Table 2, RPS, Voltage, , Value of, Resistor, R1, , R2, , Voltage Across, Resistor, R3, , R1, , R2, , R3, , 12V, , 5 Mark the polarity of the voltage drops across resistors, R1, R2 and R3., 6 Switch ON the SPST switch., 7 Following the voltage polarities marked across the, resistors, measure and record the voltage drop across, R1, R2 and R3 in Table., 8 Switch OFF SPST and Regulated power supply., 9 Write Kirchhoff's loop equations for the closed paths, a-c-d-b-a, a-e-f-b-a and c-e-f-d-a. Substitute the voltage readings recorded in Table in the equations for, verification., 10 Verify the equation using measured voltage values., , 11 Get the work checked by the Instructor., Loop:- a-c-d-b-a:, +V1 +V2 - VT = 0, +V1 +V2 = VT, Loop:- a-c-e-f-d-b-a:, +V1 +V3 - VT = 0, +V1 +V3 = VT, Loop:- c-e-f-d-e:, +V3 - V2 = 0, V3 = V2, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.7.52, , Copyright Free, Under CC BY Licence, , 87

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.53, , Verify laws of series and parallel circuits with voltage source in different, combinations, Objectives : At the end of this exercise you shall be able to, • verify the Laws of Series and Parallel circuits with voltage source., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , Materials/Components, , Trainees Tool Kit, Soldering Iron, 230V/25 watts, Milliammeter, 0-10m.A, DC, Multimeter with probes, DC Regulated Power supply 0-30V/2A, , - 1 Set, - 1 No, - 3 Nos, - 1 No, - 1 No, , •, •, •, •, •, •, •, •, •, •, , SPST Toggle Switch/1A, Resistor, 1k /1W, Resistor, 2.2k 1W, Resistor, 3.3k /1W, 1.5V Pen torch Cell, Rosin cored solder, Soldering flux, Hook-up wires, Patch Cords, Lug Board, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 10 gm, - 1 Box, -2m, - 10 Nos, - 1 No, , PROCEDURE, 1 Check physical and electrical condition of the given, ammeter, meter probes, patch cords, toggle switch, soldered on the lug board., 2 Make circuit connection on the Lug board as per the, circuit diagram., , •, , Current through c to e, , •, , Current through c to d, , 5 Measure and record the following voltages in Table-1., •, , Voltage across a to b, , •, , Voltage across a to c, , •, , Voltage across c to d, , •, , Voltage across c to e, , •, , Voltage across e to f, , 6 Switch OFF SPST and PSU., 3 With the SPST-1 & 2 in OFF position, set the output of, Power Supply to 5 volts., , 7 From the recorded readings verify the laws of series, parallel circuit., , 4 Switch ON the SPST-1 & 2 switch. Measure and, record the following currents in Table-1., , Keep RPS and the two SPST Switches in OFF, position while making circuit connection., , •, , Current through a to c, Table 1, , Current, through, a to c, , Current, through, c to e, , Current, through, c to d, , Voltage, across, a to b, , Voltage, across, a to c, , Voltage, across, c to d, , 88, , Copyright Free, Under CC BY Licence, , Voltage, across, c to e, , Voltage, across, e to f

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.54, , Measure the resistance, voltage, current through series and parallel connected, network using multimeter, Objectives : At the end of this exercise you shall be able to, • connect the circuit elements in series and test., • measure and verify Voltage, Current, Resistance in series circuit, • connect the circuit elements in parallel and test., • Measure and verify voltage, Current, Resistance in parallel circuit., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, •, •, •, , Trainees Tool Kit, Soldering Iron, 230V/25 watts, Ammeter, 0-25mA, DC, Ammeter, 0-100mA, DC, Ammeter, 0-200mA, DC, Ammeter, 0-500mA, DC, Voltmeter, 0-15 V, DC, Multimeter with probes, DC Regulated power supply, 0-30V/2A, , Materials/Components, - 1 Set, - 1 No, - 1 No, - 2 Nos, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, •, •, •, •, , SPST Toggle Switch/1A, Resistor 100 ½ watts, Resistor 150 ½ watts, Resistor 220 ½ watts, Hook-up wires, Patch Cords, Lug Board, Rosin cored Solder, Soldering flux, , -1 No, -1 No, -1 No, -1 No, -2m, - 10 Nos, - 1 No, -1m, -1 Box, , PROCEDURE, TASK 1: Measurements on Series Circuit, 1 Connect the resistors in series and also wire up the, voltmeters and ammeters as shown in Fig 1., , 8 Measure and record the Voltage (V1) and Current (I1), through Resistor R1., 2 Measure resistance across each resistor using, multi-meter and record in Table-1., , 9 Switch OFF the supply. Reconnect the ammeter and, voltmeter as shown in Fig 3., , 3 Measure the total resistance using multi-meter, between the terminals X & Y., 4 Switch ON the RPSU and set the output voltage to 12, Volts., 5 Close the switch and measure the Current (IT) and, Voltage (VT)., 6 Enter the measured value in Table-1., 7 Switch OFF the supply. Reconnect the ammeter and, voltmeter as shown in Fig 2., , 89, , Copyright Free, Under CC BY Licence

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10 Measure and record the Voltage (V2) and Current (I2), through Resistor R2., , 12 Measure and record the Voltage (V3) and Current (I3), through Resistor R3., , 11 Switch OFF the supply. Reconnect the ammeter and, voltmeter as shown in Fig 4., , 13 Calculate total resistance, total current, total voltage, using measured values., 14 Verify the laws of series circuit and Compare the, values with the calculated values., 15 Get the work checked by the Instructor., , Table 1, R1, , 90, , R2, , R3, , RT, , VT, , IT, , V1, , I1, , V2, , I2, , V3, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.7.54, , Copyright Free, Under CC BY Licence, , I3

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.55, , Identify different Inductors and measure the values using LCR meter, Objectives : At the end of this exercise you shall be able to, • identify different types of inductors by their appearance., • measure the value of inductance using Digital LCR meter., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, , Trainees Tool Kit, Digital LCR Meter with manual, Electrician Knife, , - 1 set, - 1 No, - 1 No, , •, •, •, , Assorted types and values of inductors, Hook up wires, Cotton cloth/cleaning brush, , - 10 Nos, -1m, - 1/4 kg, , PROCEDURE, Instructor has to label the different value of, inductors used for this exercise., 1 Pick one of the labelled inductor from the given lot., 2 Identify the type name, symbol and record it in, Table 1. Refer the chart (Fig 1) compare identify and, record in Table 1., , 4 Switch ON the Digital LCR meter and make the setting, for inductance measurement., 5 Connect the inductor across the digital LCR meter and, record the inductance value shown by the Digital, meter., 6 Repeat the steps-2 to 5 and measure inductance of, the remaining inductors, and record in Table 1., , 3 Measure and record the resistance across the inductor, 7 Get the work checked by the Instructor., terminals., Table 1, Label No., , Type/Name of Inductor, , Symbol, , Resistance across coil terminals, , Inductance value, , 1, 2, 3, 4, , 91, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.56, , Identify the different capacitors and measure capacitance of various capacitors, using LCR meters, Objectives : At the end of this exercise you shall be able to, • identify different types of capacitors by their physical appearance, • determine the capacitance value by typographic codes., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, •, •, , Trainees Tool Kit, DC Regulated Power Supply, 0-30V/2A, Digital LCR Meter with manual, Ohm meter, Electrician Knife, , - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, , Assorted types and values of, different types of capacitors, Cotton cloth/cleaning brush, , - 10 Nos, - 1/4 kg, , PROCEDURE, The instructor has to label the different types of, capacitors used for this exercise., 1 Pick one of the labelled capacitor from the given lot., 2 Identify the type name and record it in Table 1., , 4 Prepare LCR meter and connect a capacitor, observe, and measure the capacitor value and record in, Table 1., 5 Repeat steps-2 to 4 for remaining capacitors and, record in Table 1., , 3 Refer the typographic code chart (Fig 1) for capacitors., 6 Get the work checked by the Instructor., Observe and record the Capacitance value of the, capacitor., Table 1, Label No., , Type of Capacitor, , Capacitor, value code, , Capacitor, value, , Capacitor value by measuring, LCR meter, , 1, 2, 3, 4, Capacitor Conversion Values, Microfarads ( F), , Nanofarads (nF), , Picofarads (pF), , 0.000001 F, 0.00001 F, 0.0001 F, 0.001 F, 0.01 F, 0.1 F, 1 F, 10 F, 100 F, , 0.001 nF, 0.01 nF, 0.1 nF, 1 nF, 10 nF, 100 nF, 1,000 nF, 10,000 nF, 100,000 nF, , 1 pF, 10 pF, 100 pF, 1,000 pF, 10,000 pF, 100,000 pF, 1,000,000 pF, 10,000,000 pF, 100,000,000 pF, , Max.Operating voltage, Tolerance, Code, B, C, D, F, , Percentage, , ±0.1 pF, ±0.25 pF, ±0.5 pF, ±1%, , Code, G, H, J, K, M, Z, , Code, , Max.Voltage, , 1H, 2A, 2T, 2D, 2E, 2G, 2J, , 50V, 100V, 150V, 200V, 250V, 400V, 630V, , Percentage, , ±2%, ±3%, ±5%, ±10%, ±20%, ±80%, - 20%, , 92, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.57, , Identify and test the circuit breaker and other protecting devices, Objectives : At the end of this exercise you shall be able to, • identify the terminals of Miniature Circuit Breaker (MCB)., • connect the MCB in an electrical circuit and check the operation of MCB and ensure its function., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, •, •, , Trainees Tool Kit, Digital multimeter with probes, Electrical Loads, Single Phase Motor/1HP/240V/50Hz, M.I. Ammeter 0-10A, , - 1 Set, - 1 No, - 5 Nos, - 1 No, - 1 No, , •, •, •, •, , MCB, Single pole, 240V/6A, Connecting wires, SPST Switch, 240V/15A, Rheostat, 2500 ohm/10A, , - 10 Nos, -5m, - 1 No, - 1 No, , PROCEDURE, TASK 1: Identification of terminals of the MCB, 1 Identify the supply and load terminals of a single pole, MCB., , 3 Check the continuity between source and load terminals, by keeping MCB in ON position (Should be zero)., , 2 Check the continuity between source and load terminals, by keeping MCB in OFF position (Should be infinity)., , 4 Record the observations in Table-1., 5 Get the work checked by the Instructor., , TASK 2: Testing of MCB, 1 Collect the miniature circuit breaker and read the, specifications of it., , 11 Get the work checked by the Instructor., Note: Instead of Rheostat load, Motor load can, also be used for testing the MCB operation., , 2 Connect the circuit elements as per the circuit diagram, shown in figure 1., , Specification :, Make, :, Type, :, Current, :, Voltage, :, Short Circuit Current :, MCB Position, , 3 Keep Rheostat in maximum position before switching, ON supply., , Table 1, Continuity Between, Source and Load, Terminal, , OFF, , 4 Keep the MCB in ON condition and switch ON the, mains power supply., , ON, MCB trips Current = 1.3 X In = 1.3 X 6 = 7.8 A, , 5 Close the SPST switch., 6 Increase the rheostat gradually and note down the, readings of the ammeter., , ** MCB Trips at ___ Amps after ____ Seconds, , 7 Wait for 5 to 10 minutes and note down the status of, the MCB in Table-2., , Sl.No, , Table 2, Load current, , 1, , 0.5 A, , 8 Continue the process by increasing the load till the, MCB trips., , 2, , 1.0 A, , 9 Note down the value of current at which the circuit, breaker trips in the circuit., , 3, , 2.0 A, , 4, , 5.0 A, , 5, , 6.0 A, , 6, , 8.0A, , 10 Check whether the MCB trips at 1.3 X In, Where In is, the normal rated current of the MCB., , MCB status, , 93, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.58, , Dismantle and identify the different parts of a relay, Objectives : At the end of this exercise you shall be able to, • identify the parts of relay and trace the wiring diagram of the relay, • test and verify the operation of the Relay., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, •, •, , Trainees Tool Kit, Regulated DC Power Supply, 0-30V/2A, Multimeter/Ohmmeter, DC Ammeter, 0-1A, DC Voltmeter, 0-30V, , - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, , Hook-up wire, 12V Relay, , -5m, - 1 No, , PROCEDURE, TASK 1: Identification of Relay Parts, 1 Collect the relays along with the instruction booklet., (Refer Fig 1), , 4 Record the relay and contact terminal number., 5 Draw the connection diagram of the relay in the record., 6 Measure the coil resistance and record., 7 Record all the details in Table 1., Table 1, , 2 Inspect and determine the terminal connection of the, coil and the number of contacts., 3 Identify the normally open and closed contacts by, using Ohmmeter/multimeter., , 1, 2, 3, 4, 5, 6, 7, , Type of Relay, Coil Voltage, Number of terminals, Number of NO contact, Number of NC contact, Coil Resistance, Pickup Current, , 8 Reset Current, , : …………, : …………., : …………., : …………., : …………., : …………., : …………., , Ohm, mA, , : …………., , mA, , 8 Get the work checked by the Instructor., , TASK 2: Testing of a Relay, 1 Connect the supply as per the diagram.(Fig 2), , 4 Slowly increase the DC Voltage till the ohmmeter/, multimeter connected across the normally open contact, shows deflection or makes sound., 5 Observe the minimum current (Pick up Current), required to activate the relay and enter the value., 6 Slowly reduce the voltage of the power supply till the, ohmmeter/multimeter connected across the normally, open contact shows infinity deflection or sound gets, OFF., , 2 Adjust the power supply voltage to minimum., 3 Switch ON the Switch 'S'., , 7 Observe the minimum current (Reset current) required, to deactivate the relay and enter the value., 8 Get the work checked by the Instructor., , 94, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.59, , Connect a timer relay in a circuit and test for its working, Objectives : At the end of this exercise you shall be able to, • identify the terminals of the timer relay, • test and verify the operation of the timer Relay., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, •, , Trainees Tool Kit, Regulated DC Power Supply, 0-30V/2A, Multimeter with probes, Timer Relay 12V DC, , - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, •, •, , Hook-up wire, Bulb, 230V/40W, Power Cord, SPST Switch/1A, , -5m, - 1 No, - 1 No, - 2 Nos, , PROCEDURE, TASK 1: Identification of terminals of the Timer Relay, 1 Collect the timer relays along with the instruction, booklet., 2 Inspect and determine the terminal connection of the, coil and the number of contacts., 3 Identify the normally open and closed contacts by, using Ohmmeter/Multimeter., 4 Record the relay and contact terminal number., 5 Draw the connection diagram of the relay in the record., 6 Measure the coil resistance and record., 7 Get the work checked by the Instructor., , TASK 2 Testing of a Relay, 1 Connect the timer relay control and power circuit, connection as per the circuit diagram shown in Fig 2., , 3 Set the time of the timer relay to 1 minute., 4 Switch ON the SPST Switch 'S1' and check the control, circuit operation of the relay., 5 Give 230V/50Hz/AC power supply to the power circuit, and Switch ON the SPST switch S2., 6 Note down the delay time in the Table-1 and observe, the bulb condition., 7 Get the work checked by the Instructor., , 2 Note down the coil supply of the timer relay in the, Table-1 and set the DC power supply voltage, accordingly., Table 1, Coil Supply, , Timer setting, , Delay Time Measured, , 95, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.60, , Connect a contactor in a circuit and test for its working, Objectives : At the end of this exercise you shall be able to, • identify the terminals and auxiliary contacts of the contactor, • test and verify the operation of the contactor., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, , Trainees Tool Kit, Multimeter with probes, Contactor with 2NO/2NC/230V/1A, , - 1 Set, - 1 No, - 1 No, , •, , 1Sq.mm Multi-strand wire, , -5m, , PROCEDURE, TASK 1: Identification of terminals auxiliary contacts of the Contactor, 1 Collect the contactor along with the instruction booklet., (Fig 1), , 2 Find the main and auxiliary contacts and note down the, details in Table-1., 3 Identify the normally open and closed contacts by, using Ohmmeter/Multimeter., , Fig 1, , 4 Record the coil details and its resistance in the, Table 1., 5 Get the work checked by the Instructor., , Table 1, Coil supply, , Coil Resistance, , No.of Main, contact, , No. of Auxiliary, NO contact, , No. of Auxiliary, NC contact, , TASK 2: Testing of Relay, 1 Make connection to the coil terminal of the contactor., , 4 Observe the operation of the Contactor., , 2 Before energizing the coil, check the continuity of the, NO/NC auxiliary contacts and record the observations, in the Table-2., , 5 After energizing the coil, check the condition of the NO/, NC auxiliary contacts and record the observations in, the Table-2., , 3 Give 230V/50Hz/AC supply to the coil of the contactor, and switch ON the supply., , 6 Get the work checked by the Instructor., , Table 2, Before Energizing, Normally, Open (NO), , Normally, Close (NC), , After Energizing, Normally, Open (NO), , 96, , Copyright Free, Under CC BY Licence, , Normally, Close (NC)

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.61, , Construct and test RC-time constant circuit, Objectives : At the end of this exercise you shall be able to, • construct a RC time constant circuit, • measure the charging time delay in RC circuits., , Requirements, Materials/Components, , Tools/Equipments/Instruments, •, •, •, •, •, , Trainees Tool Kit, Digital LCR Meter with manual, Multimeter with probes, Dual Trace Oscilloscope, 0-20MHz, with manual, Function Generator with manual, , - 1 Set, - 1 No, - 1 No, , •, •, •, •, , Lug Board, Capacitor, 0.1μF/16V, Resistor, 10k /¼ CR 25, Patch Cords, , - 1 No, - 1 No, - 1 No, - 10 Nos, , - 1 No, - 1 No, , PROCEDURE, 1 Connect the test set-up as shown in Fig 1., , 3 Calculate the RC Time constant, ( =RC seconds) of, the circuit and record in Table-1., 4 Set the output of function generator to square wave, with a pulse time tp equal to 6m second (6 ). Set the, function generator level to 10VP-P. Record the set, voltage in Table-1., 5 Switch ON CRO. Set CH-1 and CH-2 Time/Div of CRO, to 1mS and position the two wave-forms as shown in, figure. Adjust the Volts/Div of CRO such that both the, waveforms are clearly seen on the screen., 6 Find out the Time constant in the charging curve at, 63.2% of the input voltage., 7 Compare the practical value with calculated value of ., 8 Get the work checked by the Instructor., •, , 2 Measure and record the values of Resistor and, Capacitor in Table-1., , •, , Maximum Capacitor, ……………Volt, , Charging, , Voltage, , =, , 63.2% of Capacitor Voltage = ………………Volt., , Table 1, Value of Resistor, in Ohm, , Value of Capacitor, in F, , Time Constant, = RC, , Practical Time, Constant, , Difference, , 97, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.62, , Construct a RC differentiator circuit and convert triangular wave into square, wave, Objectives : At the end of this exercise you shall be able to, • identify the components to the given circuit, • test the RC differentiator circuit, • record the out put wave form and plot a graph., , Requirements, Tools/Equipments/Instruments, •, •, •, , Materials/Components, , Trainees tool kit, CRO dual trace 0-20 MHz, Signal generator, , - 1 Set, - 1 No, - 1 No, , •, •, •, , Breadboard, Resistor 1.5 k , ¼ W/CR 25, Capacitor, 10 nF, , PROCEDURE, TASK 1 : Testing of RC differentiator circuit, 1 Check the given breadboard., 2 Check the components by using mutimeter., 3 Assemble the components as per circuit diagram., (Fig 1), 4 Prepare the CRO and connect the CRO in the circuit., 5 Give the input signal as triangular wave from signal, generator and observe the output as square wave., 6 Record the output wave form and plot a graph of input, voltage VS time., Note : The out wave form depends on the ratio, of the pulse width to the RC time constant., when RC is much larger (greater than 10 RC), than the pulse width the output waveform, resembles the square wave of the input signal., When RC is much smaller (less than 0.1 RC), than the pulse width, the output waveform, takes the form of very sharp and narrow spikes, as shown above., So by varying the time constant of the circuit, from 10 RC to 0.1 RC produce a range of, different wave shapes., Generally a smaller time constant., , 98, , Copyright Free, Under CC BY Licence, , - 1 No, - 2 Nos, - 2 Nos

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Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.7.62, , Copyright Free, Under CC BY Licence, , 99

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Electronics & Hardware, Electronics Mechanic - Active and Passive Components, , Exercise 1.7.63, , Construct and test series and parallel resonance circuit, Objectives : At the end of this exercise you shall be able to, • determine the resonance frequency of a given LC series circuit, • determine the circuit current at different frequencies, • plot a graph of frequency versus circuit current., • determine the resonance frequency of a given LC parallel circuit., , Requirements, Tools/ Equipment/ Instruments, •, •, •, •, , Trainees tool kit, Dual trace CRO, 0-20 MHz, with manual, Function generator with manual, Milli Ammeter 0-30mA, , Materials/ Components, - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, •, , General purpose Lug board, Capacitor 0.1 F, Inductor coil, around 40mH (Use, the solenoid coil made in unit 5), Unknown value Inductor, LED with holder, Hook-up wires, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - as reqd, , PROCEDURE, TASK 1 : Determine the resonance frequency of a given LC series circuit, 1 Measure and record the inductance of the coil., 2 Solder the components as shown Fig 1 to obtain a, simple series resonance circuit. Connect instruments, as shown in Fig 1, The LED in the circuit is to get a visual indication, of the current through the circuit at different, frequencies., , LED may not be glow or may be very dim,, because the set frequency of 1 kHz may not be, the resonance frequency of the circuit., 5 Increase the frequency gradually and record the, resonance frequency for at which the circuit current, becomes maximum (LED glows brightly), This is the resonance frequency of the series, resonance circuit because at series resonance, current I through the LC circuit will be maximum., 6 Compare and record the difference in the resonance, frequency calculated at step 3 and that measured in, step 5., 7 Vary the input frequency in steps of 500 Hz around the, resonance frequency and in each step record the, value of circuit current., , 3 Knowing the values of L and C, calculate and record, the resonance frequency of the series resonance, circuit., , 8 From the recorded readings of current in step 6, plot a, graph of frequency versus current and mark the, resonance frequency of the LC series circuit., 9 Get the working of the circuit, recorded readings and, the graph checked by the instructor., , 4 Set the output of the signal generator to 10Vrms and, frequency to 1 kHz. Record the current, I through, the circuit., , 100, , Copyright Free, Under CC BY Licence

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TASK 2 : Determine the resonance frequency of a given LC parallel circuit, 1 Measure and record the inductance of the coil., 2 Solder the component as shown Fig 2 to obtain a, simple parallel resonance circuit. Connect components, as shown in Fig 2., The LED in the circuit is to get a visual indication, of the current through the circuit at different, frequencies., , Ensure that the current through the circuit is, around 10 to 12 mA and not more. If more, current is flowing, reduce the output level of, the signal generator. LED will glow at all, frequencies other than at the resonant, frequency., 5 Increase the frequency gradually and record the, resonance frequency f at which the circuit current, becomes minimum (LED does not glows or glows very, dim)., This is the resonance frequency of the parallel, resonance circuit because at parallel resonance,, current (I) through the parallel LC circuit will be, minimum., 6 Compare and record the difference in the resonance, frequency calculated at step 3 and that measured in, step 5., , 3 Knowing the values of L and C, calculate and record, the resonance frequency of the parallel resonance, circuit., 4 Set the output of the signal generator to 4Vrms and, frequency to 1 kHz. Record the current I through the, circuit., , 7 Vary the input frequency in steps of 500 Hz around the, resonance frequency and in each step record the, value of circuit current., 8 From the recorded readings of current in step 6, plot a, graph of frequency verses current and mark the, resonance frequency of the LC parallel circuit., 9 Get the working of the circuit, recorded readings and, the graph checked by the instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.7.63, , Copyright Free, Under CC BY Licence, , 101

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Electronics & Hardware, Electronics Mechanic - Power Supply Circuits, , Exercise 1.8.64, , Identify different types of diode, diodes, modules and their specifications, Objectives : At the end of this exercise you shall be able to, • identify the diode type, module and specification., , Requirements, Tools/Equipments/Instruments, •, •, , Materials/Components, , Trainees Tool Kit, Semi conductor diode data book/, manual, , - 1 Set, , •, , Assorted type of Diodes, , - 10 Nos, , - 1 No, , PROCEDURE, The instructor has to label the different types of, Diodes used for this exercise., 1 Pick one of the labelled diode from the given assorted, lot., 2 Observe the code number printed on the diode and, record in the Table-1., 3 For chosen diode, refer semiconductor data book/, manual and identify the type of diode, semiconductor, material type of package., 4 Also record the maximum Forward Current, If , peak, Inverse Voltage, PIV, forward Voltage Drop, Vf., 5 Repeat step-2 to 4 for all the remaining diodes, and, record it in Table 1., 6 Get the work checked by the Instructor., , Table 1, Label, No., , Code, No.of, Diode, , Type of, Diode, , Semiconductor, Material, , Type of, Package, , Maximum, Forward, Current If, , 1, 2, 3, 4, , 102, , Copyright Free, Under CC BY Licence, , Peak, Inverse, Voltage, PIV, , Forward, Voltage, Drop Vf

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.65, , Test the given diode using multimeter and determine forward to reverse, resistance ratio, Objectives : At the end of this exercise you shall be able to, • test the diode using multimeter, • determine the forward to reverse resistance ratio., , Requirements, Tools/Equipments/Instruments, • Trainees Tool Kit, • Multimeter with probes, • Semi conductor data manual, , Materials/Components, - 1 Set, - 1 No, - 1 No, , •, •, •, , Assorted type of Diodes, Red colour Sleeve Wire, Patch Cords, , - 10 Nos, - 1 No, - 10 Nos, , PROCEDURE, The instructor has to label the different types of, diodes used for this exercise., 1 Pick one of the labelled diode from the given assorted, lot., 2 Set the multimeter to x100: range. Carry out resistance, zero setting of the meter., 3 Connect the multimeter probes across the diode, terminals as shown in the Fig 1a. Record the resistance, reading shown by the meter in Table-1., , 4 Reverse the meter probe connected to the diode as, shown in the Fig 1b and record the reading shown by, the meter in Table-1., 5 From the readings noted in step-3 and step-4 calculate, and record the ratio between Forward resistance (RF), to Reverse resistance (RR)., 6 From the recorded information given conclusion of, diode., •, , In good diodes, resistance will be less than 100: in, one direction and very high or almost infinity/open, in the other direction., , •, , In most cases the ratio between low to high, resistance would be at 1:1000., , •, , If get zero both ways, the diode is shorted., , •, , If get INFINITY both ways, the diode is open., , 7 Repeat step-3 to step-6 for all the remaining diodes,, and record in Table 1., 8 Get the work checked by the Instructor., , Table 1, Label, No., , Code No.of, Diode, , Forward, Resistance (FR), , Reverse, Resistance (RR), , Ratio of, FR/RR, , Servicable/, UnServicable, , 1, 2, 3, 4, , 103, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.66, , Measure the voltage and current through a diode in a circuit and verify its, forward characteristics, Objectives : At the end of this exercise you shall be able to, • find and plot the forward characteristics of a diode., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , Materials/Components, , Trainees Tool Kit, Regulated DC power supply, 0-30V/2A, DC milli-ammeter, 0-500mA, DC milli-Voltmeter, 0-1000mV, DMM with probes, , - 1 Set, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, , Lugboard, Semiconductor diode, 1N4007 or, BY127, Resistor, 470:/½ watt CR25, Hook up Wire, Patch Cords, , •, •, •, , - 1 No, - 1 No, - 1 No, -2m, - 10 Nos, , PROCEDURE, 1 Check to confirm the good physical and electrical, working condition of the given diode., 2 Identify the Anode and Cathode terminals of the diode., 3 Construct the circuit as shown in Fig 1., , 4 Switch ON the Regulated Power Supply and increase, the output voltage of the RPSU such that the diode, drop Vf varies from 0 to 1V in steps as given in, Table-1., 5 At each step record the values of If., 6 Switch OFF the RPSU. From the recorded values of Vf, and If, calculate and the forward resistance Rf of the, diode., 7 From the recorded readings in Table-1, plot a graph of, Vf and If., 8 Get the work checked by the Instructor., Table 1, •, •, •, •, , Forward voltage drop across, Diode Vf in mV, , Diode Type Number, :, Forward Resistance of Diode :, Reverse Resistance of Diode :, Lamp Resistance, :, , Forward current, If in mA, , Forward Diode, Resistance :, , 100mV, 200mV, 300mV, 400mV, 500mV, 600mV, 700mV, 800mV, 900mV, 1 Volt (1000mV), , 104, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.67, , Identify different types of transformers and test, Objectives : At the end of this exercise you shall be able to, • identify different types of transformer by appearance., • identify different types of transformer by using multimeter., , Requirements, Tools/Equipments/Instruments, , Materials/Components, , • Trainees Tool Kit, • Multimeter with probes, • Types of Transformer Chart, , - 1 Set, - 1 No, - 1 No, , •, •, , Assorted type of Transformers, Cotton Waste, , - 10 Nos, - ½ kg, , PROCEDURE, 3 Find the HT and LT winding by measuring resistance, with the ohm meter/multimeter/DMM., , The instructor has to label the different types of, transformers like, Low voltage step-down, transformer, EHT transformer of T V, IFT, Auto, transformer., 1 Take one of the labelled transformer from the given lot., Enter its label number in Table-1., 2 For the given transformer, from its appearance, shape, of core, etc., identify the type of the transformer, rated, voltage and record details in the Table-1., , 4 Draw the symbol of the each transformer in Table-1., Observe the resistance value of windings using, multimeter record it in Table 1., 5 Repeat steps-2 to steps-4 for the remaining, transformers., 6 Get the work checked by the Instructor., , Table 1, Label, No., , Name of the, Transformer, , Voltage rating, H.T, , L.T, , Measured, Resistance value, H.T, , Type/shape, of core, , Symbol, , L.T, , 105, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.68, , Identify the primary and secondary windings of transformer and test the, polarity, Objectives : At the end of this exercise you shall be able to, • read and interpret the name plate details of single phase transformer, • find out the polarity of the transformer., , Requirements, Tools/Instruments, •, •, •, •, •, •, , MI Voltmeter 0-300V, Ohmmeter 0-500:, MI Ammeter 0-10A, MI Ammeter 0-100mA, Push button switch, 12 V battery, , - 2 Nos, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , PROCEDURE, TASK 1 : Identify the primary and secondary winding of a transformer., 1 Find out the corresponding terminals and two, windings (HT & LT) with ohm meter as shown in Fig 1, by checking the continuity., , 2 Determine HT & LT winding by measuring resistances, with the ohmmeter., LT windings will have low resistance;mark, accordingly., 3 Record resistance of both parts, 1st pair -------- ohms. This is HT/LT winding, 2nd pair-------ohms. This is HT /LT winding, , TASK 2 : Test the polarity of a transformer, 1 Connect DC supply to HT through push button switch., , 3 Mark HT terminals as A1 and A2., , 2 Connect voltmeter to LT as shown in Fig 2., , 4 Mark LT terminals as a1 and a2., 5 Press the push button switch., 6 Observe the deflection of the pointer of the voltmeter., If the pointer deflects in the right direction, retain the, markings made on terminals., 7 Change the voltmeter connections made to LT, terminals and change the marking made on LT, terminals if the deflection is in the reverse direction., 8 Now press the push button switch once again and, observe that the voltmeter deflecting in right direction., , 106, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.69, , Construct and test a Half-wave, Full wave and Bridge rectifier circuit, Objectives: At the end of this exercise you shall be able to, • construct and test a half-wave rectifier, • construct and test a two diode full-wave rectifier, • construct and test a full-wave bridge rectifier., , Requirements, Tools/Equipments/Instruments, •, •, •, , Materials/Components, , Trainees tool kit, Oscilloscope 0-30MHz, Dual Trace, with probe kit, Multimeter with probes, , - 1 Set, - 1 No, - 1 No, , •, •, •, •, •, •, •, , Lug Board/PCB, Semiconductor diode, 1N4007 or, By127, Step-down Transformer,, 230V/12V/500mA, Centre tapped Step-down, Transformer, 230V/12-0-12V/, 500mA, Main cord with Three Pin Plug, Resistor, 470:/1W CR25, Hook up Wire, , - 1 No, - 4 Nos, - 1 No, - 1 No, - 1 No, - 1 No, -5m, , PROCEDURE, TASK 1 : Construction and Testing of a Half-Wave rectifier, 1 Check to confirm the good condition of the given, components., , 7 Record the difference in the calculated and measured, values., , 2 Using Lug board/PCB, construct the Half-wave rectifier, as shown in Fig 1., , 8 Connect the two channel input probes of the CRO. Set, the Volt/div and Time/div of CH-1 and CH-2 such that, the two waveforms are seen clearly., , 3 Connect AC mains to the Transformer and switch ON, mains., 4 Measure and record the mains voltage and transformer, secondary AC voltage VS(rms) to the rectifier in the, Table-1., , 9 From the displayed waveforms on the screen, measure, and record the following parameters;, a Peak value of Source Voltage VS (Input Volt to, Rectifier)., , 5 Calculate the expected DC voltage Vdc across the load, resistor RL using the formula,, Vdc = 0.45VS(rms), , b Frequency of Source Voltage VS., c Peak value of pulsating DC - Vdc., 10 Frequency of Pulsating DC - Vdc., , Where, VS(rms) is the AC input to the rectifier., , 11 Get the work checked by the Instructor., , 6 Measure and record the rectifier output DC voltage Vdc, across RL using multimeter/Voltmeter., Table 1, •, •, •, , Type of Transformer, Rated Primary Voltage, Rated Secondary Voltage, , Mains, supply, voltage, , Secondary, voltage, VS(rms), , :, :, :, , Calculated, Vdc, , Measured, Vdc, , Difference, between, (3) and (4), , Peak, value, VS, , Frequency Peak, of VS, Value, of pulsa, ting Vdc, , Frequency, of pulsating, Vdc, , 107, , Copyright Free, Under CC BY Licence

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TASK 2: Construction and Testing of a two diode Full-Wave rectifier, 1 Construct the two diode Full-wave rectifier as shown in, Fig 2., , 6 Record the difference in the calculated and measured, values., , 2 Connect AC mains to the centre tapped Transformer, and switch ON mains., , 7 Connect the two channel input probes of the CRO. Set, the Volt/div and Time/div of CH-1 and CH-2 such that, the two waveforms are seen clearly., , 3 Measure and record the mains voltage and transformer, secondary AC voltage VS(rms) to the rectifier in the, Table-2., 4 Calculate the expected DC voltage Vdc across the load, resistor RL using the formula,, Vdc=0.9VS(rms), , 8 From the displayed waveforms on the screen, measure, and record peak value of Source Voltage VS (Input Volt, to Rectifier), frequency of Source, Voltage VS, peak, value of pulsating DC - Vdc, frequency of Pulsating DC, - Vdc., 9 Get the work checked by the Instructor., , Where, VS(rms) is the AC input to the rectifier., 5 Measure and record the rectifier output DC voltage Vdc, across RL using multimeter/Voltmeter., , 108, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.8.69, , Copyright Free, Under CC BY Licence

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Table 2, •, •, •, , Type of Transformer, Rated Primary Voltage, Rated Secondary Voltage, , Mains, supply, voltage, , Secondary, voltage, VS(rms), , :, :, :, , Calculated, Vdc, , Measured, Vdc, , Difference, between, (3) and (4), , Peak, value, VS, , Frequency Peak, of VS, Value, of pulsa, ting Vdc, , Frequency, of pulsating, Vdc, , TASK 3: Construction and Testing of four diode full wave bridge rectifier, 1 Construct the Full-wave Bridge rectifier as shown in, Fig 3., , 6 Record the difference in the calculated and measured, values., , 2 Connect AC mains to the Transformer and switch ON, mains., , 7 Connect the two channel input probes of the CRO. Set, the Volt/div and Time/div of CH-1 and CH-2 such that, the two waveforms are seen clearly., , 3 Measure and record the mains voltage and transformer, secondary AC voltage VS(rms) to the rectifier in the, Table-3., , 8 From the displayed waveforms on the screen, measure, and record the following parameters;, , 4 Calculate the expected DC voltage Vdc across the, load resistor RL using the formula,, , -, , Peak value of Source Voltage VS (Input Volt to, Rectifier)., , Vdc=0.9VS(rms), , -, , Frequency of Source Voltage VS., , Where, VS(rms) is the AC input to the rectifier., , -, , Peak value of pulsating DC - Vdc., , -, , Frequency of Pulsating DC - Vdc., , 5 Measure and record the rectifier output DC voltage Vdc, across RL using multi-meter/Voltmeter., , 9 Get the work checked by the Instructor, , Table 3, •, •, •, , Type of Transformer, Rated Primary Voltage, Rated Secondary Voltage, , Mains, supply, voltage, , Secondary, voltage, VS(rms), , :, :, :, , Calculated, Vdc, , Measured, Vdc, , Difference, between, (3) and (4), , Peak, value, VS, , Frequency Peak, of VS, Value, of pulsa, ting Vdc, , Frequency, of pulsating, Vdc, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.8.69, , Copyright Free, Under CC BY Licence, , 109

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.70, , Measure ripple voltage, ripple frequency and ripple factor of rectifiers for, different load and filter capacitors, Objectives: At the end of this exercise you shall be able to, • construct and test the effect of capacitor filter with different load condition, • determine the ripple voltage, ripple frequency and ripple factor., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Materials/Components, , Trainees tool kit, Oscilloscope Dual Trace 0-20 MHz, Multimeter with probes, Voltmeter, 0-30V, MC, , - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, •, •, •, •, •, , Lugboard/PCB, Semiconductor diode, 1N4007 or, By127, Step-down Transformer, 12V/500mA, Mains cord with Three Pin Plug, Resistor, 5: /½W, Resistor, 470:/1W, Electrolytic Capacitor, 1000μF/25V, SPST switch/1A, Hook up wire, Patch cords, , - 1 No, - 4 Nos, - 1 No, - 1 No, - 1 No, - 1 No, - 2 Nos, - 5 Nos, -5m, - 10 Nos, , PROCEDURE, 1 Collect and check the required components., 2 Connect the components as shown in Fig 1., 3 Energize the input to the transformer with 230V AC., 4 Observe the output waveform on CRO and measure, the output with switch S1, S3 open and S2, S4 closed, under full-wave rectifier., , 6 Switch "OFF" S2 and switch "ON" S1, S3, S4, the circuit, becomes full-wave rectifier with filter. Observe the, output voltage wave shape on CRO and plot it., 7 Measure the output voltage (Vr(p-p)) as well as DC., 8 Calculate the Ripple factor for all the three conditions., 9 Get the work checked by the Instructor., , 5 With switch S1, S2, S4 "ON" and S3 "OFF" the circuit, acts as capacitor input filter. Observe the output, waveform on the CRO and plot it., , 110, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.71, , Identify and test zener diode, Objectives : At the end of this exercise you shall be able to, • identify and test the Zener Diodes., , Requirements, Tools/Equipments/Instruments, • Trainees Tool Kit, • Multimeter with probes, • Semi conductor data manual, , Materials/Components, - 1 Set, - 1 No, - 1 No, , •, , Assorted type of zener diodes, , - 1 No, each, , PROCEDURE, 6 From the recorded information given conclusion of, Zener diode., , The instructor has to label the different types of, zener diodes used for this exercise., 1 Pick one of the labelled Zener diode from the given lot., 2 Record the code number printed on the Zener diode in, the Table-1., 3 For chosen Zener diode, refer semiconductor data, book and identify the following., , •, , In good Zener diodes, resistance will be less than, 100: in one direction and very high or almost, infinity/open in the other direction., , •, , If you get zero both ways, the diode is shorted., , •, , If you get INFINITY both ways, the diode is open., , 7 Repeat step-2 to step-6 for all the remaining Zener, diodes., , •, , Zener Voltage, VZ, , •, , Maximum Zener Current, IZ, , •, , Maximum Power dissipation, PZ and record in the, table., , 8 Get the work checked by the Instructor., , 4 Connect the multimeter probes across the Zener, diode terminals as shown in the figure -1a. Measure, and record the resistance value shown by the meter in, Table-1., 5 Reverse the meter probe connected to the Zener, diode as shown in the figure- 1b measure and resistance, record the value shown by the meter in Table-1., , Table 1, Label, No, , Code No., of Diode, , Zender, Voltage VZ, , Maximum, Zener, Current, IZ, , Maximum, Power, Dissipation, PZ, , Forward, Resistance, FR, , Reverse, Resistance, RR, , Remarks, , 1, 2, 3, , 111, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.72, , Construct and test zener diode based voltage regulator circuit, Objectives: At the end of this exercise you shall be able to, • construct and test the Zener based voltage regulator circuit, , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, , Materials/Components, , Trainees tool kit, Regulated DC power Supply 0-30V/2A, Multimeter with probes, Ammeter, 0-300mA MC, Voltmeter, 0-30V, MC, Voltmeter, 0-10V, MC, , - 1 Set, - 1 No, - 1 No, - 1 No, - 2 Nos, - 1 No, , •, •, •, •, •, , Lug Board/PCB, Zener Diode, 5.6V, Resistor, 470:/½W, Hook up wire, Patch cords, , - 1 No, - 1 No, - 1 No, -3m, - 10 Nos, , PROCEDURE, 1 Collect the equipments and components and check, the items for its good working condition., 2 Connect them as in the circuit diagram-1., , 3 Switch ON the input supply., 4 Measure and record the values of VR, VZ and IZ in the, Table-1., 5 After observing readings, switch "OFF" PSU and from, the recorded readings, calculate the Zener resistance, RZ and power dissipated PZ for each set of readings., 6 Get the work checked by the Instructor., Do not dismantle the circuit board as this is to, be utilized for exercise No.1.8.73, , Table 1, , Sl., No., , Unregulated, Input voltage,, Vin, , Voltage Drop, across series, Resistor VR, , Zener, voltage, VZ, , Zener, current,, IZ, , Formula:, •, , Zener Resistance =, , •, , Zener Power = PZ = VZ.IZ, , 112, , Copyright Free, Under CC BY Licence, , Calculated, Zener, Zener, Resistance,, Power,, RZ, PZ

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Electronics & Hardware, Electronics Mechanic - Power supply circuits, , Exercise 1.8.73, , Calculate the percentage regulation of regulated power supply, Objectives: At the end of this exercise you shall be able to, • construct test and calculate the percentage regulation of regulated power supply., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, •, , Materials/Components, , Trainees tool kit, Power Supply Unit, 0-30V/1A, Multimeter with probes, Ammeter, 0-300mA MC, Voltmeter, 0-30V, MC, Voltmeter, 0-10V, MC, , - 1 Set, - 1 No, - 1 No, - 1 No, - 2 Nos, - 1 No, , •, •, •, •, •, •, •, •, •, , Lug Board/PCB, Zener Diode, 5.6V, Resistor, 4.7k:/1/2W, Resistor, 3.3k:/1/2W, Resistor, 2.2k:/1/2W, Resistor, 1k:/1/2W, Resistor, 470:/1/2W, Hook up wire, Patch cords, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, -3m, - 10 Nos, , PROCEDURE, 1 Use the assembled circuit diagram of exercise-1.8.72,, for this task., , 5 Calculate and record the output percentage of load, regulation at different loads using the formula,, , 2 Switch "ON" PSU, set input voltage (Vin) to 15V., 3 Measure and record the no load voltage Vout., , % of Load Regulation =, , 4 Connect load resistor of values given in the Table-2, across the output terminals and in each case measure, and record load current IL and output voltage Vout., , Where, VNL - Vout at no-load, VL - Vout at load, 6 Get the work checked by the Instructor., , Table 1, VIN at 10 Volts Constant, Load Resistor, RL, , Output Voltage, VOUT, , Load Current, IL, , % of Load Regulation, , 0 Ohms, 2.2k:, 3.3k:, 4.7k:, Formula:, •, , Percentage Load Regulation =, , 113, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.74, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Identify various indicators, cables, connectors and ports on the computer, cabinet, Objectives : At the end of this exercise you shall be able to, • identify various input/output devices connected to the computer, • identify different controls and ports on the PC system, • identify the internal parts of a system unit, • connect devices to related ports on the system unit., , Requirements, Hardware and software, •, , Computer set, , - 1 No, , TASK 1 : Identification of different controls, ports and connectors on the PC system, The instructor has to demonstrate the uses of, the following indicators ,switches controls (Fig, 1) and ports external to the processor found, on the system unit shown in (Fig 2)and the, trainees will make a record of it in Table 1 and, Table 2., , Table 1, SI. No, , Name the parts on the CPU Front Panel, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, Table 2, SI. No, , Name the ports on the CPU Rear Panel, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 114, , Copyright Free, Under CC BY Licence

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Chart 1, Description, , Application, , 40 pin FRC male connector, located on MB, , To connect MB with HDD, , 25 pin FRC male connector, located on MB, , To connect MB with Parallel port, provided on the rear side of the, PC, , 10 pin FRC male connector, located on MB, , To connect MB with serial port, “D” connector provided on the, rear side of the PC, , HDD cable (data), located inside the PC, , To connect MB with HDD, , 4 pin Molex connector, from SMPS unit, , SMPS to HDD, FDD, CDD, , Cable/connector, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.74, , Copyright Free, Under CC BY Licence, , 115

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Description, , Application, , 20 pin Berg connector, from SMPS unit, , SMPS (ATX) to MB, , 12 pin Berg connector, , SMPS (AT) to MB, , 5 pin DIN plug on key, board cable, , Key board to MB, , 5 pin DIN socket, provided on the rear side, of the PC, , MB to key board, , 5 pin Miniature DIN plug, on keyboard cable, , Key board to MB, , 5 pin Miniature DIN socket, provided on the rear side, of the PC, , MB to key board, , PS/2 Key board connectors, , MB to Mouse, Mouse to MB, , 116, , Cable/connector, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.74, , Copyright Free, Under CC BY Licence

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Description, , Application, , 15 pin High density VGA, connector on the rear side, of PC, , MB to Monitor, , D-25 pin male connector, on the rear side of the PC, , Serial port (Comport), , D-9 pin male connector, on the rear side of the PC, , Serial port (Comport), , D-25 pin female connector, on the rear side of the PC, , Parallel port (Printer port), , Mini Jack socket, on the rear side of the PC, , Audio IN / MIC, , Mini Jack from external, audio device, , Cable/connector, , External Audio Devices to, Sound card, , USB female connector, provided on the rear side, of the PC, , MB to USB peripherals, , USB male connector from, the USB device, , USB peripherals to MB, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.74, , Copyright Free, Under CC BY Licence, , 117

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Table 3, SI. No, , 12, , Name of the Connector/Cable, 13, , 1, 14, 2, 15, 3, 16, 4, 17, 5, 18, 6, 19, 7, 20, 8, 21, 9, 22, 10, 23, 11, 24, , 118, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.74, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.75, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Demonstrate various parts of the system unit and motherboard components, Objectives : At the end of this exercise you shall be able to, • identify drives HDD, CD ROM drive, DVD-drive, USB pen drive and various secondary storage devices and, their usual maximum capacity for storage of information., , Requirements, Tools/Instruments, , Materials, , • Screw driver set, • Digital Multimeter, Equipments, , - 1 No, - 1 No, , •, •, , - 1 No, , Desktop PC with mouse & keyboard, Extra SATA and PATA Hard-Disk, Drive compatible cables, , Sticking labels for marking, cables & connectors, , - as reqd, , - as reqd, , •, , In PC along with one set of I/O devices will be, used for demonstration by instructor, , •, , Two PCs each with one set of I/O devices and, extra SATA HDD with cable, extra PATA DD with, cable and one extra CD ROM drive / DVD ROM, drive with cable, will be used by two groups of, trainees (each group of maximum 20 trainees, one group for identification and other for cable, connection)., , •, , •, , In the PCs used by trainees ensure that all the, major components inside system unit are, cabled such that trainees can identify referring, wall chart diagram., , •, , All the cables internal to system unit (processing, unit) should be labelled along with (From - TO), and male - female connectors are also to be, labelled by same code with suffix "F"&"T"., , •, , All major components inside the processing unit, like - HDD, CD R/W drive, DVD R/W drive, CPU, processor, ROM BIOS etc to be labelled., , •, , Before opening the system unit processing unit,, static charge of our body should discharge, through earthing cable connected to body of, demonstrator / user., , PROCEDURE, TASK 1 : Identification of various drives and secondary storage devices in a PC, 1 Remove the cover of the PC system unit, 2 Observe hard disk drive type either SATA or PATA and, its capacity, power connection cable, its voltage column, colour code at cable with voltage supply used., 3 Identify desktop PC HDD, CD-R/W drive & DVD ROM drive, its connections for both type SATA and, PATA hard disk drive and its connection using straight, cables, cross cable for making it primary master either,, primary slave or secondary master / slave using, suitable data cable., , 4 Identify connection point at mother board for SATA, HDD, PATA HDD, CD R/W drive, and DVD R/W used, in desktop PC, 5 Identify different type cable connections used for, different drive., 6 Identify polarity of connector to avoid wrong, connection., 7 Fix the cabinet, switch on supply and check the status, of computer., , 119, , Copyright Free, Under CC BY Licence

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Fig 2, , Fig 1, , DVD Drive, , Floppy Drive, Fig 4, , Fig 3, , Hard Disk Drive, , CD Drive, Fig 5, , 120, , Fig 6, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.75, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.76, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Identify various computer peripherals and connect it to the system, Objectives : At the end of this exercise you shall be able to, • identify different controls on the processing unit cabinet, • identify various input/output devices connected to PC, • identify various ports available on PC for various devices., , Requirements, Hardware and software, •, , •, , Identical PCs with labelled ports,, connection cables, (could even be dummy), , - as reqd, , •, , I/O devices such as Keyboard, Mouse, Monitor, Printer, Multimedia, Speaker,, CD Drive, DVD Drive and Microphone - as reqd, , •, , One PC along with one set of I/O devices will, be used for demonstrating by the instructor., , •, , Two PC’s each with one set of I/O devices, will be used by two groups of trainees(each, group not exceeding a maximum of ten, trainees), , •, , Screw driver set and Allen key, (depending upon the type of, fixing used with connectors), Sticking labels, , - as reqd, - as reqd, , PROCEDURE, TASK 1 : Identify the major components, Controls and Ports seen on the processing unit cabinet, A. The instructor has to demonstrate the uses of the, indicators, switches, controls and Ports external to the, processor unit found on the cabinet of the processor, unit as per the list given below., •, , Mains power-on switch, , •, , Power on LED, , •, , Reset button, , •, , HDD busy LED, , •, , Floppy Disk Drive, Disk eject button, Disk busy, LED, , •, , CD Drive, CD busy/reading LED, controls and, sockets found on the disk drive, , •, , Ports for connecting the Mouse and other devices, , •, , Printer port, keyboard connector, monitor connector, , •, , Speaker socket, , •, , Universal serial bus port (USB), , While demonstrating, the following points should be, Highlighted and stressed., •, , Function of each switch, , •, , Function of each LED indicator, , •, , Function of each visible device, , •, , Function of each port, , •, , Basic specification of DVD and CD drive, , •, , Basic symptoms of healthy processor (fan sound,, power light, any unusual noise/smell etc), , •, , Precaution to be taken while using the computer, , •, , Precaution to be taken while operating DVD and, CD drives, , •, , Precaution to be taken while handling DVD and CD, , •, , Precaution to be taken while handling and storing, the processor unit, , 121, , Copyright Free, Under CC BY Licence

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TASK 2 : Identification of the I/O devices connected to PC, A. The Instructor has to demonstrate the controls of, different I/O devices connected to PC as per the list, , While carrying out the demonstration, the instructor has to, ensure the following points are highlighted,, , •, , The Monitor, , Precautions to be taken for handling the PC system., , •, , The Printer, , •, , The Mouse, , 1 Record the I/O devices connected to the computer, setup given to you, , •, , The Keyboard, , •, , Multimedia speakers, , •, , The microphone, , •, , The scanner, , •, , The Modem, , •, , Any other I/O devices available at the time of, conducting this demonstration., , 122, , 2 Record the manufacturer, type name and model name/, number of the I/O devices connected, 3 Record against each device whether it is an input, device or an output device, 4 Get the recorded details of the devices checked by the, instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.76, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.77, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Disable certain functionality by disconnecting the concerned cables SATA /, PATA, Objectives : At the end of this exercise you shall be able to, • disable the functionality from device manager, • disconnecting the devices from the mother board., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , Trainees tool kit, Digital multimeter with probes, Static charge earthing cable, system, Desktop PC with mouse & keyboard, Extra SATA and PATA Hard-Disk, Drive compatible cables, , Materials/Components, - 1 Set, - as reqd, , •, , Sticking labels for marking, cables & connectors, , - as reqd, , - as reqd, - as reqd, - as reqd, , PROCEDURE, TASK 1: Disabling the device/port/ USB/from the device manager, 1 Click start menu of windows desktop screen, , 7 In properties window, select the drivers tab, , 2 Open control panel in start menu, , 8 Now click the button of disable for disabling the device., , 3 Select and open device manager, 4 Now, locate device or port or USB or connector to, enable or disable., 5 After finding the device or port or USB or connector,, select it and make mouse right click on device icon., , 9 Click the OK button on window, 10 Now disconnect the concerned device connected to, connector, 11 Check the worksheet by the instructor, , 6 Select and open the properties of device in right click, menu., TASK 2 : Disconnecting the devices from the motherboard, 1 Open the cabinet of the desktop PC, 2 Identify the port or USB cable connections on, motherboard by using motherboard diagram., , 4 Remove the cable connectors and check the status, on desktop., 5 Get the work checked by the Instructor., , 3 Unlock if any protection screws are present on cable, connectors, , 123, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.78, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Replace the CMOS battery and extend a memory module, Objectives : At the end of this exercise you shall be able to, • identify the battery information and type of battery, • remove the battery, • replace the battery, • identify the location of RAM (S1mm/D1mm), • replace and extend the RAM., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Materials/Components, , Watch-maker screw driver set, Screw driver set, Desktop P.C. with mouse and, keyboard, Extra mother board of computer, , - 1 No, - 1 No, , •, , - 1 No, - 1 No, , •, •, •, , Quick guide or manual for motherboard, of P.C. showing diagram & its, components, CMOS battery, Different types of RAM suitable, to the motherboard, Quick installation guide, , - 1 No, - 1 No, - as reqd, - 1 No, , PROCEDURE, TASK 1 : Identification of battery and type, 1 Open the chasis/case of computer, , Most of the batteries will be like CR2000 etc., , 2 Find the battery location on motherboard by referring, quick guide or manual, , 5 Identify type of socket (socket with upper tab, socket, with lateral, inside socket laying) provided on battery, , 3 Find the type of cell (example: Coin Cell) as shown in, Fig 1., , 6 Get the work checked by the Instructor., , 4 Note down information available on cell like voltage,, size or package etc, , Fig 2, , Fig 1, , TASK 2 : Removal of the battery, 1 Remove or side the wires laying on battery., 2 Draw back the tabs surrounded by battery by using, small screw driver or watch maker screw driver., , Use suitable watchmaker screw driver for tap, screw lock removing., 3 Gently pull the battery and remove the battery as show, n in Fig 4., , 124, , Copyright Free, Under CC BY Licence

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Fig 3, , Fig 4, , Fig 3, , Fig 4, , TASK 3 : Replacing the battery, 1 Identify the polarity of battery by using symbol or, indicator., , Fig 5, , 2 Identify the polarity of socket by using symbol or, indicator., 3 Place the battery on the socket and press gently to, lock tabs of socket as shown in Fig 5., 4 If it is screw lock tab, hold the lab and make screw the, tab., 5 Get the work checked by the Instructor., , TASK 4 : Identification of RAM (SIMM/DIMM), 1 Open cover of computer system unit using four head, screw driver., , 5 Identify the master and slave RAM slots by printed, information or by colour or reference manual., , 2 Note the mother board information like type of board,, type of RAM (SIMM/DIMM) either it is DDR1 or DDR2, supporting and front system bus speed etc., , 6 Note each RAM slot maximum capacity., , 3 Find the RAM location on motherboard by referring, quick guide or manual., , 7 Note the RAM slot information like type of RAM, supporting and RAM Series (1, 2, 3 etc.)., Some slots are supporting two or more series., , 4 Note the number of RAM slots available on board., TASK 5: Replacing and Extending the RAM, 1 Note the fixed RAM information available on board., , Fig 6, , 2 Observe the RAM lock tabs types available on slots., 3 Identify and note the reference notch point of slot., 4 Open the lock tabs gently., 5 Hold the RAM in the proper direction and matching, reference notch as shown in Fig 6., 6 Fix the RAM by pressing gently., 7 Ensure the proper locking of tabs., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.78, , Copyright Free, Under CC BY Licence, , 125

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Electronics & Hardware, Exercise 1.9.79, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Test and replace the SMPS, Objectives : At the end of this exercise you shall be able to, • test and replace the SMPS from computer., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , Materials, , Trainees tool kit, Digital multimeter with probes, Adjustable type Table Lamp, Magnifying Lens, Oscilloscope 0-20MHz Dual manual, with probe kit and operation manual, , - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, •, •, , Complete assembly of Computer, RC Solder, Paper clip, A computer SMPS, , - 1 No, - 10 gm, - 1 No, - 1 No, , - 1 No, , PROCEDURE, Switch Mode Power Supply (SMPS), alternating current (AC) convert into DC, current into different output power supply., SMPS power supply to motherboard, Hard disk, drive, DVD drive., 1 Open the computer's casing. Be sure that the computer is completely turned off prior to starting., 2 Remove the screws that are present in the side panel, of the computer and need to remove only one side of, the panel., 3 Remove the connections from the SMPS to all the, peripherals of the computer., 4 Take a paper clip and bent it in a shape of 'U' shape., 5 Find the 24 pin connector from your SMPS (obviously, it is the bigger connector from SMPS). Try to locate, green and black wire., , Please note, that there will be one green wire, and many black wires. You can select any black, wire you want., 6 Insert one end of the bent paper clip into the green, terminal and the other end to the black terminal., 7 Turn ON the SMPS with the wire inserted. The SMPS, should be running now. If it does not turn ON, insert, the paper clip firmly and try once more. If still the SMPS, is turn ON, the SMPS might be faulty., 8 If the PSU fan rotates you can 80 % confirm that the, unit is functioning well., 9 There are still chances that the PSU can be faulty, which can be tested by checking the output volts at, the pins., 10 Reconnect the removed connecters and get the work, checked by the Instructor., 11 Get the work checked by the Instructor., , Opening Computer Case, , Selecting Green Wire, , Removing SMPS Connectors, , “U” Shaped Paper Clip, , Inserting Clip in the Connector, , Turning on the SMPS, , 126, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.80, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Replace the given DVD and HDD on the system, Objectives : At the end of this exercise you shall be able to, • disassemble the drive cage, • disassemble and assemble HDD, • reassemble the drive cage inside the cabinet., , Requirements, Hardware, •, •, •, , •, , PC with standard configuration, CD/DVD drives, HDD drives, , - 3 Nos, - 2 Nos, - 2 Nos, , •, •, , Screwdriver set and anti-static, wrist strap, Sticking labels (reusable), Anti static covers, , - as reqd, - as reqd, - as reqd, , PROCEDURE, TASK 1 : Removing the CD/DVD and HDD from the computer system, At the time of preparation of this exercise practice sheets,, majority of the PC’s have a single drive cage which hosts, all drives. At the time of using this exercise, if situation is, found to be different, the instructor in charge should, suitably modify the procedure given below., , •, , Identifying the snap on springs of drive cage, , •, , Identify the drive cage guide in the cabinet, , •, , Technique involved in pressing the snap on springs, and taking out the drive cage., , A Demonstrate the procedure for removing the drive, cage consisting of at-least one HDD from the computer, cabinet., , •, , Precautions to be taken while handling the drive, cage such that other components mounted inside, the processing unit does not get damaged., , While demonstrating the following points should be, considered;, •, , Identifying the mounting type and fixtures used., , •, , Use of correct tools and danger in case of using, wrong tools., , •, , Technique involved in removing the front cover of, the processing unit if found necessary., , 1 As demonstrated by the instructor, unscrew the fixing, screws and remove the drive cage slowly& gently, without causing damage both to the drives inside the, drive cage and to other components/boards mounted, inside the processing unit., 2 Get the removed drive cage checked by the instructor., , TASK 2 : Removal of the drives from the drive cage, The instructor has to demonstrate the, technique, tips and precautions to be taken, while removing the drives from the drive cage., While demonstrating, make the trainees, understand why a drive is positioned in that, place and why not at a different place in the, drive cage., , 2 In each of the drives removed from the drive cage,, identify the connectors/ sockets/ jumpers/ switches, found at its back/ rear side. Make a rough sketch the, connectors / sockets/ jumpers/ switches and record, the number of pins and jumpers/ switch settings., , 1 As demonstrated by the instructor, remove all the, drives taking sufficient care that the drives are not, handled roughly, not dropped or damaged while, removing., , 4 Get the removed drives, identified connectors/ sockets/, jumpers/ switches and recorded specifications of the, drives checked by the instructor., , 3 Identify and record the specifications of the drives, given on the drives., , 127, , Copyright Free, Under CC BY Licence

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TASK 3 : Assembling of HDD into the computer, A Demonstrate the procedure and, assembling:, , technique of, , •, , HDD into the drive cage., , •, , Drive cage into the computer cabinet\chassis While, demonstrating the following points should be, highlighted:, , •, , Handling the drive cage while fitting the drives, , •, , Technique in fitting the drives for correct alignment, with respect to front panel., , • Checking the stability and firmness of the assembly, 1 As demonstrated by the instructor, reassemble the, drives in the order instructed in the drive cage. During, assembling do not forget to follow the precautions, given by the instructor. Take the advice of the instructor., 2 Get the reassembled drives on the drive cage checked, by instructor for its correctness and stability., , B Issue one additional Hard Disk Drive of such a physical, size that it can be fitted in the drive cage along with the, existing drives., Since the intention of asking the trainees to fix, the second HDD is only to make them practice, the skill of mounting the device in the drive, cage, and practice connecting the cable, the, issued HDD’s may even be a defective drive., However if the added HDD is a working one,, then the trainees can be made to learn the skill, of formatting the second drive, taking image of, the other hard disk and such other very relevant, tasks., 3 Record the specifications of the second drive to be, fixed on the drive cage. As demonstrated by the, instructor, fix the given second HDD with great care, and patience in the drive cage. Make sure that sufficient, space exist between the drives mounted on the drive, cage., 4 Get the work checked by the Instructor., , TASK 4: Reassembling of drive cage into the computer, A Demonstrate the procedure for reassembling the drive, cage back inside the cabinet., , •, , Any other points specific depending upon the type, of cabinet and drive cage., , While demonstrating ensure that stress is made on, the following:, , 1 Slide in the drive cage inside the cabinet as, demonstrated by the instructor., , •, , Positioning of the cabinet while reassembling the, drive cage., , 2 Check if the doors of the CD/DVD drive is in place with, the front panel., , •, , Sliding in the drive cage into the cabinet and locking, it in position., , Reposition the drive cage if necessary and fix, the screw using the correct type of tool., , •, , Checking the alignment of the CD/DVD drive with, the front panel of the cabinet., , 3 Get the reassembled drive cage checked by the, instructor., , •, , Snap on springs of drive cage ., , •, , Proper fit of the drive cage guide inside the cabinet., , 128, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.80, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.81, Electronic Mechanic - Computer Hardware, OS,MS Office and Networking, Dismantle and assemble the desktop computer system, Objectives : At the end of this exercise you shall be able to, • dismantle and assemble desktop computer system., , Requirements, Hardware and software, •, , •, , •, , Identical PCs with labeled ports,, connection cables, (could even be dummy), , - as reqd, , •, , Screw driver set and Allen key, (depending upon the type of, fixing used with connectors), Sticking labels, , - as reqd, - as reqd, , I/O devices such as Keyboard, Mouse, Monitor, Printer, Multimedia, Speaker,, CD Drive, DVD Drive and Microphone - as reqd, , PROCEDURE, TASK 1 : Dismantling and assembling the computer system, 1 Switch off and unplug the power cord from the PC., 2 Remove the component connections from the Cabinet, i.e. USB connections, Keyboard/Mouse Connections,, LAN Connection, Parallel and Serial Port, Connections, 3 Ensure no power related connection is there with, Cabinet, 4 Unscrew the cover that is opposite to the Mother, board section, as the motherboard section closure is, fully closed by motherboard base, and remove the, cover., 5 Remove the SMPS connections to Hard Disk drive,, DVD Drive, Motherboard Main Power, CPU Power,, Fan Power Connector, PSU Connections, inside the, Cabinet., 6 Remove the connectors from devices like SATA/IDE, Cables to HDD and DVD, Audio Connectors, Cabinet, Front USB/Audio Connectors., 7 Unscrew the motherboard screws, HDD-DVD screws, and other removable items and dismantle., Warning: Do not remove or misplace any, jumpers placed across the motherboard, as it, will result malfunctioning or dead - error, motherboard operation., Note : Now the pc totally dismantled.keep a, note of all the parts is being dismantled, which, will be easier to re-assemble the system., , 8 Clean the objects with a soft cotton cloth, mild blower, etc. to remove dust and patches on them., Note : Don’t use any water based cleaner inside, the system as it is power conductive and may, short-circuit in case of moisture. Keep the parts, separated and clean., 9 Place the SMPS at right position and screw it., 10 Place properly the motherboard on the legs of cabinet., In case any placement problem place the motherboard, first and screw it before fixing SMPS., 11 Fix the processor and fan, RAM,PCI Cards which ever, removed at proper places., 12 Fix the Harddisk,DVD Drive,Floppy Drive,Other, components that to be screwed with the cabinet., 13 Connect the connectors from motherboard to various, devices like SATA,IDE,USB Extensions,etc., 14 Plug the SMPS connections to Motherboard,CPU, PSU,Devices,which are on power required, connections., 15 Screw up the side cover to close the cabinet., 16 Connect the devices and external devices using, connectors into motherboard., 17 Connect the power chord finally to the Cabinet., Note: Ensure that all connections are proper, Now switch ON the power and switch-ON the, system., , 129, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.82, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Boot the system from different options, Objectives : At the end of this exercise you shall be able to, • boot the system using Windows operating system, • shut down the computer, • change the booting order from HDD to CDROM Drive in BIOS., , Requirement, Tools/Equipments/Instruments, •, , Desktop PC, , - 1 No, , PROCEDURE, TASK 1 : Booting the system using Windows operating system, 1 Once made all the connection with PC, switch ON, the system in the following sequence:, •, , AC mains., , •, , Stabilizer/CVT/UPS unit (It is recommended to use, a stabilizer/CVT/UPS), , •, , Power switch of the Distribution box., , •, , External peripheral devices such as Printer,, Monitor, Speaker, etc., , 2 Press the POWER ON switch on the CPU System., •, , In Laser jet (clunking sound and the light glows)., , 3 Boot process begin and POST operation will Display, On the Screen., Usually the computer will beep once or twice, on boot up. This is normal, and nothing to, worry about. Repeated beeping combined with, no display and/or error messages indicate that, something might be wrong. Otherwise, your, computer will proceed to perform a power-on, self test., 4 Wait a few seconds after that the system will load, windows OS and display the screen., , Wait and observe the following., , •, , Beep sound been heard when a computer get started., , •, , Keyboard lights flashes., , •, , Mouse light glows., , •, , Monitor lights glows (turn from yellow to green)., , •, , CD/DVD/Floppy drive lights flashes(turn green)., , •, , Power on LED and Hard disk LED glows on the CPU, (turns green)., , Printer, •, , •, , 5 Next Windows start up with asking password for, enter into Windows., 6 Type the password correctly (ask the password to, the instructor ) then press ‘enter’ key for confirmation., Hints: Some computer does not have password. Such case just press ENTER key for Skip, Password option., 7 Next Desktop screen will come., 8 Now the system is ready for use, , In Dot-matrix / Inkjet (The head moves from right to, left and the lights glows)., , TASK 2 : Shutting down the computer, 1 Close all the open programs., 2 Click ‘ON’ the, shut down Option., , 4 Wait till screen goes blank., , button and select, , 3 Move the Cursor over option dialog box and select, "shut down " option and click "Ok" button., This makes the Windows to close all opened /, running applications if any and shuts down all, activity on the computer so that the power to, computer can be turned off., , Although the windows OS closes all running, application and then shuts down the PC , it is, not recommended to keep any application, open at the time of turn off the PC., 5 Switch ‘OFF the supply in the following sequence., •, , External peripheral devices such as printer,, Monitor, Speaker, etc., , •, , CPU System, , 130, , Copyright Free, Under CC BY Licence

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•, , Power ‘OFF the Distribution box, , •, , Stabilizer/CVT/UPS unit, , •, , AC mains, , 6 Get the work checked by the Instructor., , TASK 3 : Changing of the booting order from HDD to CDROM Drive in BIOS, 1 First start the computer and during the initial booting, process display the message., 2 Press Del or ‘F2’ key on the keyboard to enter into, CMOS BIOS setup . The BIOS Setup screen display, the startup screen., Entering into CMOS setup by pressing DEL key, is not suitable for all PC. The step for Entering, into the CMOS setup depends on the, motherboard. Press the correct keyboard, command for entering into setup display on, your computer., 3 Select Boot Menu option by moving the arrow keys, on the keyboard and press enter key., •, , 6 Move the arrow key to "Exit" menu and select Exit, saving changes option ( or Press F10 key on the keyboard) will display on the screen., •, , BIOS will first try to boot from any removable, devices - like floppy drives or flash drives. If, no removable devices are bootable, BIOS will, next try the hard drive, followed by the CD-ROM, drive, and finally the network., , Setup will display the confirmation message on, the screen., , 7 Select "Yes" by moving arrow key and press ENTER, key on the keyboard for save your CMOS., Configuration changes and exit form setup., •, , Boot option menu display the options., , 4 Select removable device option from boot order., , •, , 5 Set CD ROM drive as a first Boot device and, Removable device as a second boot device and hard, drive as a third boot devices., , Now the computer will restart automatically and, ready to boot from CD ROM drive by display a, message for your confirmation., , 8 Press any key to accept boot from CD ROM drive.., •, , System loads OS from CD ROM drive and starts, working., , 9 Get the work checked by the instructor., , Boot order can be changed by pressing the ‘+’and, ‘-’ keys., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.82, , Copyright Free, Under CC BY Licence, , 131

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Electronics & Hardware, Exercise 1.9.83, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Install OS in a desktop computer, Objectives : At the end of this exercise you shall be able to, • install windows OS on the PC, • format a secondary hard drive, • install driver software from motherboard CD., , Requirements, Tools/Equipments/Instruments, •, , A working PC, , •, , Operating system CD, , - 1 No, , •, , Then windows will copy files and continue to start, setup., , - 1 No, , PROCEDURE, TASK 1 : Installation of windows OS on the PC, Enter into CMOS setup, 1 Power on PC., Prompt message is displayed as follows, , Press Key "R" for repair the existing, corrupted Windows OS. If you to stop, installation press F3 key., , Press <DEL> to enter setup, 2 Press <DEL> key, Immediately enter into CMOS setup utility, menu., 3 Change the boot sequence by following the steps from, 1 to 8 explained in Task 1 of exercise 1.7.82, 4 Insert the windows XP installation disk into CD Rom, drive., The PC will now restart and see a message at, the top of the screen telling to "Press any key, to boot from CD " as shown in Fig 1, 5 Go ahead and Press any key for setup to begin, 1, , Installation of OS will format hard disk. Format will delete all the information stored in the, hard disk. Copy all the important documents, before start setup., •, , Next the setup welcome screen appear., , Once setup begins a message stating that setup is, inspecting computer's hardware Configuration., , 6 Press "ENTER" Key to continue windows setup, process., Next EULA screen appear on the screen, 7 Press F8 to accept the Windows XP Licensing, Agreement., If an existing Windows XP installation is, detected, are prompted to repair it. To bypass, the repair, press “ENTER” Key., Partition the disk, All existing partitions and non-partitioned, spaces are listed for each physical hard disk., If you want to create a partition where one or, more partitions already exist, first delete the, existing partition or partitions, and then create, the new partition. You can move the arrow keys, to select an existing partition press D to delete, , and then press L (or press ENTER, and then, press L if it is the System partition) to confirm, that you want to delete the partition. Repeat, this step for each existing partition that want, to include in the new partition. When all the, partitions are deleted, select the remaining nonpartitioned space, and then press C to create, the new partition., 8 Use the ARROW keys to select an existing partition,, or create a new partition by selecting the, non-partitioned space, , 132, , Copyright Free, Under CC BY Licence

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When want to create a new partition can also, press C to create a new partition using nonpartitioned space., If your hard disk is new one then need to do a, partition and format your hard disk., 9 Press "Enter" key to create the partition., To specify the partition size, type the size in, megabytes (MB) for the new partition., 10 Repeat steps 8 to 9 to create additional partition., OS starts partitioning the total hard disk, memory space into 2 or 3 partition as allotted., 11 Press the Arrow keys to select the partition where, you want to install Windows XP, and then press, ENTER., The next screen to choose the file system to, reformat hard drive., 12 Select the format option by moving the arrow keys, and press "ENTER":, Format process will come on the screen., Setup program will now format the partition, drive and copy the files followed by a restart., , 13 Setup will now ask to select language, 14 Move the cursor to US and English click "Next " Tab, Enter your name and organization appear on the, screen., 15 Select "Next" tab to continue installation., 16 Type product ID code on the next screen., Product ID code is available on the side of the, computer Tower or CD cover., 17 Enter Name of the computer , Administrator password, and confirm the password by retyping the password, again asked in the next screen., If not interested to give password then just, press "Enter" key to skip the Step., 18 Click "Next " Tab to go to Time zone screen., 19 Set month, date, time and Click "Next" tab., Wait for the Next Network settings screen appear on the screen., 20 Click "Next" tab to finish installation., Computer restart with Windows XP OS followed by Desktop screen., , Do not press any key to boot at this point, Next screen showing that your computer, will restart in 1 minutes., Computer restart with windows XP screen., TASK 2 : Formatting of the secondary Hard drive, 1 Click on icon and click mouse right button it will, display a popup menu., 2 Click "Open" option., , 4 Select "Format" option., A screen will display on the screen., 5 Select "NTFS" and Click "Ok" button., , A screen will display., 3 Select the "D" drive and right click the mouse will, display a popup menu., TASK 3 : Installation of the Driver software from motherboard CD, 1 Insert Motherboard CD into CDROM Drive., 2 Follow the instructions shown on the screen to install, sound driver, Network driver etc.,, 3 System will restart after every driver files are copied, to the system to activate the hardware., , Motherboard CD contains all the driver software to activate all Hardware components, assembled in motherboard., 4 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.83, , Copyright Free, Under CC BY Licence, , 133

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Electronics & Hardware, Exercise 1.9.84, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Install a printer driver software and test for print outs, Objectives : At the end of this exercise you shall be able to, • install a printer on Windows, • perform self test on printer, • manage print queue., , Requirements, Tools/Equipments/Instruments, •, •, , A working PC, Printer with driver CD, , - 1 No, - 1 No, , If have a laser printer, allow a few inches of, space on all sides for ventilation, , Install printer driver software according to the, manufacturer's instructions given in the CD., , PROCEDURE, TASK 1 : Installation of a Deskjet 6500 series Printer on Windows., 1 Connect the power cable to the AC mains., 2 Connect the data cable to the suitable port., 3 Switch on the printer and system., , 4 Click on the, , button found at the left, , corner of the taskbar., On clicking the start button, a menu list pops, ups as shown in Fig 1., , Fig 1, , 134, , Copyright Free, Under CC BY Licence

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6 Take the cursor over, , and, , double click a screen will appear as shown in Fig 2, Fig 2, , 7 Click the right mouse button. The following popup, menu will appear as shown in Fig 3., , 13 Click "Next" Tab ., 14 Select printer port wizard which appears on the screen., 15 Create a new port for the printer or select the default, printer port given in the Wizard., , Fig 3, , 16 Next Install printer software wizards appeared on the, screen with printer Manufacture's name and model of, the printer., 17 Look for your printer in the list., 18 From the list if find the printer then click "Next" and, proceed to the "Install the Printer Driver" wizard., 19 Give name of the printer asked in the name printer, wizard., 20 Select "Yes" to set install printer as a default printer to, the computer., 21 Click "Next" tab., 8 Move the cursor over "Add printer" and double click, the mouse., 9 Click "Next " tab in the Add Printer wizard ., 10 Local or Network printer wizard will appear on the, screen., 11 Select "Automatically Detect and Install My Plug and, Play Printer option and then click "Next" tab, , Print test page wizard will appear., 22 Select " Yes" to print a test page.(if don't want to print, then select "No"), 23 Click "Next" tab., 24 Installation process will complete and a Wizard will, appear on the Screen., 25 Click " Finish" tab, , Printer will print the test page ., 12 Now the computer will try to automatically detect and, 26 Get the work checked by the instructor., install printer driver software . The computer not able, to detect the software then it will display the Next, wizard., Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.84, , Copyright Free, Under CC BY Licence, , 135

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If Printer Driver Not Listed?, 1 Click "Have disk" tab on Install printer software wizard., , Next wizard shown in Fig 4 will display on the, screen., , Fig 12, 4, Fig, , 2 Insert the printer driver CD into CDROM drive given, by the manufacturer., , Fig, Fig 13, 5, , 3 Click and select CDROM drive, 4 Locate the setup file from CDROM drive, 5 Click "OK "tab., Next wizard shown in Fig 5 will display on, the screen., 6 Move the mouse to the printer name and Click ., 7 Click "Next" tab., Printer Connection Wizard as shown in Fig 6, will display on the screen., 8 Select the type of connection and click "Next" tab., Now software license agreement wizard will, display on the screen., Fig 14, 6, Fig, , 136, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.84, , Copyright Free, Under CC BY Licence

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9 Accept the license by click the option ., , Fig, Fig 718, , 10 Click "Next" tab., 11 Select the Printer connector type from the Connector, Type Wizard ., 12 Click " Next" tab, 13 Click "Install " tab from the wizard., Now the Computer will start copy driver, software from CD., Next wizard shown in Fig 7 will display on the, screen., 14 Select Print a test page option and click "Finish" tab., Completing the Add printer Wizard will, display on the screen., 15 Click " Finish " Tab., , 17 Show the test page to the instructor., , 16 Test Print page will print on the paper., TASK 2 : Performing a Self - Test on Printer, 1 Turn on your computer and printer., , 5 Right click on the installed printer icon., , 2 Click" start" on your Windows taskbar., , 6 Click "Print Test Page" to start the self-test., , 3 Choose "Control Panel" then, , 4 Click" View Installed Printers"., , Perform a self-test each time you install a new, ink cartridge, or when your print quality is low., The self-test will not work well if the printer ink, levels are low., , TASK 3 : Managing the Print Queue, 1 Open Microsoft Word and Open an existing document., , To Pause printing, , 2, , Print the document using print command., , 4 Select the print job in the list which you want to pause,, , After issuing Print command a printer icon will, be displayed in the system tray., , 5 Click Document menu in the dialogue box (a pull-down, menu will be displayed) and click on Pause command., , 3 Move the mouse cursor over the printer icon displayed, in the system tray and Double click on it., A Printer dialogue box will be displayed. In that, dialogue box the list of print job(s) and its software and status , owner and number of pages,, port time and date (when it was started) and, its size will be displayed. Also the name of port, in which the job is being printed., , The printing process will be paused., 6 Repeat the previous step and select Restart to restart, the printing process., To Cancel printing process, 7 Select the print job in the list which you want to cancel, printing,, 8 Click Document menu in the dialogue box (a pull-down, menu will be displayed) and click on Cancel command., The printing process will be cancelled, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.84, , Copyright Free, Under CC BY Licence, , 137

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Electronics & Hardware, Exercise 1.9.85, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Install antivirus software, scan the system and explore the options in the, antivirus software, Objectives : At the end of this exercise you shall be able to, • install antivirus software from a disc, • install antivirus software from internet, • scan the system for virus., , Requirement, Tools/Equipments/Instruments, • Computer or Laptop with, Windows operating system, • CD of antivirus software, , - 1 No, - 1 No, , PROCEDURE, TASK 1 : Installation of antivirus software from a Disc, 1 Load the anti-virus CD-ROM into the disc tray and, close, then wait for the CD menu to appear on screen., Step 1: Click the "Install Now" button, This should be located in the lower left hand corner of, the web site. Clicking this button begins the process., Step 2: Download the required files, After you click the "Install Now" button, the required files, will automatically download to the computer., , 2 Type in the product security code in the boxes on the, screen., The security code is printed on the back of the, plastic case for the CD-ROM containing the, anti-virus software., 3 Follow the on-screen prompts, clicking "Yes" when, asked, "Do you wish to install this software?", 4 Reboot the computer when the installation is complete., This involves shutting down and restarting the computer, so the anti-virus settings can take effect., , Fig 1, , 5 Get the work checked by the Instructor., , TASK 2 : Installation of Antivirus Software From the Internet, 1 Go to an anti-virus software company site on the, Internet to purchase an anti - virus program., , Some offer trial versions of anti-virus programs for, free., 2 Choose the software product, wish to purchase from, the company’s menu of offerings and click “Buy Now”, or Download Now”., , Fig 2, , 3 Enter the credit and other personal information in the, required fields to purchase the software, then press, “Enter”., 4 Follow the on-screen prompts, clicking "Yes" when, asked if wish to download the software to the, computer., , 138, , Copyright Free, Under CC BY Licence

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5 Wait for the download to complete., , Fig 3, , This could take several minutes, depending on, the speed of the Internet connection. Do not, log off the computer or change any setting until, the software has finished downloading to the, system., 6 Reboot the computer if prompted at the end of the, download., 7 Get the work checked by the Instructor., , Fig 4, , TASK 3: Scanning the system for virus, 1 Go and select the anti-virus software from the start, menu., 2 Find the system SCAN button on software screen, , 4 Observe and study the status report of software, 5 Observe the virus and warning shown by the software., 6 Get the work checked by the Instructor., , 3 Click the button for scan, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.85, , Copyright Free, Under CC BY Licence, , 139

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Electronics & Hardware, Exercise 1.9.86, Electronic Mechanic - Computer Hardware, OS,MS Office and Networking, Install MS Office software, Objectives : At the end of this exercise you shall be able to, • install the MS Office software in the Personal Computer., , Requirement, Tools/Equipments/Instruments, •, •, , Trainees tool kit, Personal Computer, , Materials/Components, - 1 Set, - 1 No, , •, , Microsoft Office-2007 Enterprises CD, , - 1 No, , PROCEDURE, 1 Insert the Microsoft Office-2007 Enterprises CD in the, DVD drive. If the setup wizard does not automatically, begin, Click Start> Run > D:\ setup.exe., 2 Enter the product key from the back of the EC jacket, and click "Continue"., 3 Next Microsoft License terms will display on the, screen. Read the terms and accept the License Terms, and click the "Continue" button., 4 Choose an installation option., a Upgrade (Remove Office 2003 or old version), b Customize (Keep office 2003 installed and adds, office 2007 allowing you to use them both), , 5 Click the Radio button for "Keep all previous version"., 6 Click the installation option tab, left-click the first drop, down box and click "Run all from My Computer". Then, click "Install Now"., 7 Installation will begin. It may take 15 to 30 minutes to, finish., 8 Click Close to complete the installation., 9 First time launch any Office Program, will be prompted, to activate the software. As long as have an active, Internet connections choose the default option and, click "Next"., 10 When the activation finishes, click "Close"., , •, , If you click "Upgrade", go on to Step-7., , 11 Click "Ok" to finish., , •, , If you click "Customize", go on to Step-5., , 12 Get the work checked by the Instructor., , 140, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.87, Electronic Mechanic - Computer Hardware, OS,MS Office and Networking, Create folder and files, draw pictures using paint, Objectives : At the end of this exercise you shall be able to, • create document file in windows explorer, • create folder in windows explorer, • open paint brush and new drawing, • draw different types of lines, • identify and work with paint brush tools, • save clippings to disk., , Requirement, Tools/Equipments/Instruments, •, , Desktop Computer or Laptop, with windows OS, MS-Office, , - 1 No, , PROCEDURE, TASK 1 : Creating Document file in windows Explorer, 1 Click start button in task bar and click “Computer”, program list or press, windows key, , + E in the key board, , The windows explorer window will appear., 2 Select and double click the LocalDisk (D:), already, created files and folders are displayed., , 5 Delete the “New Microsoft Document”, 6 Type any file name as you like for eg: Sample and, press Enter key., 7 Double click the “Sample” file , type any text and save, the file., 8 Get the work checked by the Instructor., , 3 Right click on “D:” drive., 4 Select “New” Option and click Microsoft Word, Document”., TASK 2 : Creating folder in Windows Explorer, 1 Follow the steps 1 and 2 in Task 1., , 4 Press Enter Key., , 2 Right click and select New option and click “Folder”., , 5 Get the work checked by the Instructor., , 3 Type any “Folder Name” as you like for Eg: Electronic, Mechanic., , TASK 3 : Starting a Paintbrush and new drawing, Start a Paintbrush:, , Loading a Drawing:, , 1 Open Accessories in Windows, , 1 Choose File, , 2 Choose Paintbrush, , 2 Choose Open, , Begin New Drawing:, , Color or Black & White, , 1 Choose File, , 1 Choose Options., , 2 Choose New, , 2 Choose Image Attributes., 3 Choosing Black and White will give pattern fill options., Choosing Color will give color fill options., , 141, , Copyright Free, Under CC BY Licence

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TASK 4 : Drawing a line, 3. Fill color is the same as foreground color., Draw a Straight Line:, Draw a Freehand Line:, , 1 Choose, 2 Drag and release to complete., , 1 Choose the paintbrush icon., , Line Color:, , 2 The brush shape can be that of a dot, a rectangle or a, line., , 1 Line tools will use the foreground color (or pattern if in, black and white) as selected from the Palette with the, left mouse button., , 3 Change the shape of the brush with the Brush Shapes, option under Options., , 2 Lines around circles, rectangles, polygons, etc. will, use the background color as selected from the Palette, with the right mouse button., TASK 5: Working with Paintbrush tools, Circle/Ellipse Tool:, , Line thickness:, , with the left mouse button. (Holding, , 1 Choose, , down shift while placing points forces a circle), 2 Place corner point (of an imaginary box around the, circle) and press the left button., , icon with the left mouse, , Point and Click on, button., Erasing:, , 3 Drag to opposite corner point and release., Box Tool:, , Choose 1), , 1 Choose, , with the left mouse button.(Holding, , down shift while placing points forces a square), 2 Use left mouse button for one corner. Drag to opposite, corner point and release., Draw a Splined Line:, , or 2), , icon with the left button., , 1 Erases the foreground color only and replaces it with, background., 2 Erases both foreground and background to white., Spray Paint (Air Brush):, 1 Choose the, , icon. Hold down the left mouse, , button to spray., , 1 Choose, 2, 2 Click on line start. Drag to end., , Note the paint used by the sprayer is set by the color, below., , 3 Click to one side of the line and drag to stretch line into, a spline., , 3 The width of the spray pattern is set by the line, thickness below., , 4 Repeat (3) for second stretch., , Move Objects or Areas:, , Zooming In:, It is possible to modify a painting pixel by pixel., , 1 Outline the area with irregular, , or rectangular, , 1 Choose View., 2 Choose Zoom In., , scissors icon., , 3 Select the zoom area., , drag., , 4. Click on pixels to change them to the foreground color., Zooming Out:, , Use the left mouse button and, , 2 To move, point to the center of the outlined area and, drag., , 1 Choose View menu., 2 Choose Zoom Out., , 142, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.87, , Copyright Free, Under CC BY Licence

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If you use the left mouse button to move the, area, the background colors or patterns will, become transparent. If you drag with the right, mouse button, both the foreground and, background colors are retained and moved, together, , 2 Move icon until the point of the paint roller shadow is, in the area to fill, and click. (If too much area is filled,, use the Undo under the Edit menu)., Other Modifications:, Once a cutout has been defined, it may be modified with, Pick options: rescaled with Shrink and Grow,, , Fill an Area:, skewed, Set the fill type by, , 1 Choose the paint roller, , clicking on the color or pattern along the bottom of the, screen., , with Tilt, flipped with Flip, , Vertical and Flip, Horizontal or changed dark to light with Inverse, and, made inverse (negative image) by using the options in the, Pick menu., , TASK 6: Saving the Clippings to Disk, , 1 Outline the area with irregular, , scissors, , or rectangular, , Mistakes:, Before doing anything else, choose Edit and, Undo, as this undoes only the last process. You, can also Press Esc to stop most processes., Calligraphy:, , ., , 2 Choose Edit and Copy to put it on the clipboard (or), choose Edit and Copy to save the clipping under, several different bitmap options. This is useful for, preparing graphics for other programs because only, the selected area is saved, minimizing the file size., Text:, , Choose the, , icon. Change the shape of the brush, , with the Brush Shapes option under Options. Also, the, line thickness must be set greater than minimum. Note, that the paint used by the brush is set by the foreground, color or fill pattern below., Use the Full Screen:, Choose View. Choose View Picture. <Esc> to get back., , 1 Choose, , Saving:, 2 Point to start location with left button., , 1 Open File menu with left mouse button., , 3 Type, Return key is carriage return., , 2 Select Save as ..., , Change font Style and Size before choosing another tool., , Quitting:, 1 Choose File, 2 Choose Exit, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.87, , Copyright Free, Under CC BY Licence, , 143

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Electronics & Hardware, Exercise 1.9.88, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Explore different menu/tool/format/status bars of MS word and practice the, options, Objectives : At the end of this exercise you shall be able to, • create a word document and identify its components, • create resume, • format the document using tools, • insert picture and clip art, word art., , Requirement, Tools/Equipments/Instruments, •, , •, , Desktop Computer or Laptop, with windows OS and MS office, Software, Installation MS office Software, , - as reqd, - as reqd, , PROCEDURE, TASK 1 : Creating a word document and identifying its components, 1 Open a new word document., 2 Identify the various screen components as in below, Fig., , TASK 2 : Creating a Resume of a Candidate, 1 Type the following in the document., RESUME, Name : G.Raghavan, Date of Birth : 17.08.1994, Gender : Male, Father Name :R.Gnaneshwar, Religion : Hindu, , Telugu, , Nationality : Indian, , Hobbies : Social Networking, Marketing studies, , Category : General, , Declaration :, , Address : No.12/38, Nageswar II Cross, III Phase,, Harikrishna Apts., Chandan Circle,, Malleswaram, Bangalore., Mobile : 09833156987, Email :[email protected], , Qualification :, Degree : B.Com, Completed in National College,, KCR, Karnataka, 2014 PGDiploma : PGDCA,, Completed in Manipal Institute, Sadasiva Nagar,, Bangalore. PGDPMIR , Completed in Manipal, Institute, Sadasiva Nagar, Bangalore., Experience : 2 Years as Assistant Manager @, Shiv Hundai, JT Nagar, Bangalore., Languages Known : Kannada, English, Hindi,, , All the above said information are true and fair, to the best of my knowledge, Station : Bangalore, Sincerely yours,, Date :, , 144, , Copyright Free, Under CC BY Licence

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TASK 3 : Formatting the document using tools, 1 Select the title ‘Resume’ and center it using Center, Align Tool in the Paragraph block, , Note : Font and formatting options are, available in the main ribbon as in fig shown., , 2 Make it Bold using Bold option below the Font tab., , 6 Set the alignment for Degree and others with, proper TAB values., , 3 Align the name, ‘:’ and name of the candidate, with TAB as like below, , 7 Make uniform for experience, Languages and, Hobbies also., , Name : G.Raghavan, , 8 Make the Declaration into the center alignment, and bold., , 4 Align other lines with ‘:’ according the above line, to make it uniform aligned upto email., , 9 Make the declaration text center aligned., , 5 Make it Bold and underlined the Qualification, and Experience titles., , Note : The document view will be as below after, alignment is over., , RESUME, Name, , :, , G.Raghavan, , Date of Birth, , :, , 17.08.1994, , Gender, , :, , Male, , Father Name, , :, , R.Gnaneshwar, , Religion, , :, , Hindu, , Nationality, , :, , Indian, , Category, , :, , General, , Address, , :, , No.12/38, Nageswar II Cross, III Phase,, Harikrishna Apts., Chandan Circle,, Malleswaram, Bangalore., , Mobile, , :, , 09833156987, , Email, , :, , [email protected], , Qualification :, Degree, PGDiploma, , : B.Com, Completed in National College, KCR, Karnataka, 2014, : PGDCA, Completed in Manipal Institute, Sadasiva Nagar, Bangalore., PGDPMIR , Completed in Manipal Institute, Sadasiva Nagar, Bangalore., , Experience, , : 2 Years as Assistant Manager @ Shiv Hundai, JT Nagar, Bangalore., , Languages Known, , : Kannada, English, Hindi, Telugu, , Hobbies, , : Social Networking, Marketing studies, Declaration, All the above said information are true and fair to the best of my knowledge, , Station : Bangalore, , Sincerely yours,, , Date :, Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.88, , Copyright Free, Under CC BY Licence, , 145

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10 Save the document for reference., , 11 Get the work checked by the Instructor., , TASK 4 : Insert picture and clipart, wordart, 1 Create a Text box on the right top corner of the resume, using Insert->Textbox as in Fig 1, Fig 1, , 2 Insert picture of the applicant using Insert->Picture, option into the text box as in Fig 2., Fig 2, , 3 Select the text box and remove its outline by double, Click on the text box, Drawing Tool->Shape Outline to, NO OUTLINE as in Fig 3., Fig 3, , 146, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.88, , Copyright Free, Under CC BY Licence

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4 Select Resume and make it as word art using Insert>Word as in Fig 4 and apply a style to get the word, Resume to appear in a stylish appearance., Fig 4, , 5 The final appearance of the title may be as in Fig 5, Fig 5, , Note : If misalignment occurs while making title, design, do delete the title and insert a new word, art to make the title as Resume., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.88, , Copyright Free, Under CC BY Licence, , 147

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Electronics & Hardware, Exercise 1.9.89, Electronics Mechanic - Computer Hardware, OS, MS Office and Networking, Explore different menu/tools/format/status bars of MS Excel and practice the, options, Objectives : At the end of this exercise you shall be able to, • create excel file, • create model marksheet, • use simple formula for calculations, • formatting worksheet., , Requirements, Tools/Equipments/Instruments, •, , Desktop computer (or) Laptop, with MS office, , - 1 No, , PROCEDURE, TASK 1 : Creating Excel file and identifying its components, 1 Open Microsoft Excel start menu, Fig 1, , 2 Find the screen elements and its names, Fig 2, , 3 Save the file as ‘myexcefile.xlsx’, 148, , Copyright Free, Under CC BY Licence

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TASK 2 : Creating a model marksheet of students, 1 Set cursor point to cell A1, 2 Type the tiles of the marksheet columns as below:, , A1 : Sl. No., B1 : Name of Student, C1 : Class. D1 :, Language, E1 : English, F 1 : Maths, G1 : Science,, H1 : Social Science, I1 : CCE, J1 : Total, K1 : Average, L1: Status, 3 Create Students List as below table :, , Sl. Name of, No Student, , Class, , Lan, , Eng, , Maths, , Science, , S Science, , CCE, , Total, , Average Status, , 1, , Nagaraj, , VII, , 58, , 70, , 98, , 88, , 67, , 70, , 451, , 75%, , 2, , Manjunath, , VII, , 70, , 70, , 88, , 76, , 55, , 80, , 439, , 73%, , 3, , Sabir Ali, , VII, , 58, , 85, , 99, , 94, , 73, , 92, , 501, , 84%, , 4, , Albert, , VII, , 82, , 85, , 89, , 81, , 84, , 68, , 489, , 82%, , 5, , Raju, , VII, , 33, , 42, , 60, , 31, , 55, , 60, , 281, , 47%, , Note : The excel sheet cells are not auto, adjusted. Use the Ribbon->Format->Autofit, Column Width to make the contents of the, columns to fit accordingly as in Fig., , 4 Save the file for future use., , TASK 3 : Using simple formula for calculations, 1 Open the saved Excel file., 2 Select the cell J2, which requires a total of marks., 3 Enter the formula for sum of the mark values as, ‘=SUM(D2:H2)’, which calculates the sum for cells, from, D2 to H2, i.e. 381., 4 Select the Formula cell and place the mouse cursor, at the right bottom of the cell to drag+copy to other, cells., , 5 Drag the point up to the cell J6 to copy the formula for, the following cells., 6 Calculate average from the total and no. of subjects, with the formula ‘=AVERAGE(D2:H2)’, 7. Set round off value for average using formula, ‘=ROUND(AVERAGE(D2:H2),0)’, 8 Drag the formula to next following cells., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.89, , Copyright Free, Under CC BY Licence, , 149

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9 Obtain result of the student as mark should be higher, than 35 in all subjects using the formula as:, ‘ =IF(AND((D2>34),(E2>34),(F2>34),(G2>34),(H2>34),(I2>34)),”PASS”,”FAIL”) ‘, , Note : IF is a logical condition which could, generate result based on condition and pass, success or failure value to the cell. AND logic, makes the following conditions are true in, whole. The results value to be in success it is PASS, and in failure its FAIL., , 150, , 10 Drag the status / result cell to the following cells, also., 11 The final sheet will be as in below Table., 12 Save the file for reference and refer instructor for, formula related issues., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.89, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.90, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Prepare power point presentation on any three known topics with various, design, animation and visual effects, Objectives : At the end of this exercise you shall be able to, • create a new slide, insert bullet and numbering, • add animation, transition and sound in a powerpoint presentation., , Requirements, Tools/Equipments/Instruments, •, •, , Trainees tool kit, Personal Computer, , - 1 Set, - 1 Set, , PROCEDURE, TASK 1 : Adding Text Using the Placeholders, 1 Click Start ‘ All Programs ‘ Microsoft Office ‘, MS Powerpoint option. A Microsoft Power Point, window appears., 2 Click the Home tab located on the Ribbon., 3 Click the upper part of the New Slide button. The, slide with placeholders appears., 4 Click the placeholder and start writing the text., , •, , Font Style, , •, , Font type, , •, , Font size, , 18 After selecting the desired settings, click the OK, button., Applying the Bulleted List:, , Adding Text Using a Text Box:, , 19 Select a paragraph to apply the bulleted list in the MS, Powerpoint presentation., , 5 Click the Insert tab., , 20 Click Home tab., , 6 Click the Text Box button, in the Text group. A cross, hair pointer appears., , 21 In the Paragraph group, click the Bullets combo box., A drop-down list appears., , 7 Drag the cross hair pointer on the slide to create the, text box of the desired size and release the mousebutton., , 22 Select the desired bullet list style. The selected, bulleted style is applied to the paragraph., , 8 Click inside the text box and start typing., Changing the Text Direction and Aligning the Text:, 9 Click the Home tab., , Rearranging and Deleting the slides:, 23 Click the desired slide in the Slides tab in the MS, powerpoint presentation., , 10 Click the Text Direction button in the Paragraph group., A drop-down list appears., , 24 Drag the mouse to the location to replace the slide., In the position of the slide has changed as compared, to its earlier position., , 11 Select the More Options option of the drop-down list., , 25 Click the slide to delete., , 12 A Format Text Effects dialog box opens., 13 Modify the settings and click the Close button. The, Text changes in the slide according to the settings., Formatting the Text:, 14 Select the text you want to format., 15 Click the Home tab., 16 In the Font group, click the Dialog Box Launcher, button. A font dialog box appears., 17 Set the following as per the requirements;, •, , Font colour, , Click the Home tab., 26 In the Slide group, click the Delete button., 27 The selected slide gets deleted from the MS, Powerpoint presentation., 28 And also select the slide that want to delete and then, press the Delete button from the keyboard., Saving the presentation:, 29 Click the Office button. A dropdown list appears., 30 Click the Save option. A Save As dialog box appears., 31 In the Navigation pane, click the folder to save the, MS PowerPoint presentation., 151, , Copyright Free, Under CC BY Licence

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32 Type a name for the presentation besides the File, name option., , 34 Select the desired save as type. (i.e. PowerPoint, Presentation)., , 33 In the Save as Type option, click the down arrow, button. A drop-down list appears., , 35 Click the Save button to save the presentation., 36 Get the work checked by the Instructor., , TASK 2: Adding Animation, 1 In the MS PowerPoint presentation, click the slide, where you want to add the animation., 2 Select the Animation tab on the Ribbon., 3 In the Animations group, click the Animate combo box., A drop-down list appears., 4 Select the desired animation option from the dropdown list. The selected animation is applied to the, slide. And view the presentation in the Slide Show, view and watch the animation effect., Note: When adding animation to an object or, text in a slide, a mark in the shape of a star, appears in the Slide Show view beside the, slide. And select any object or text inside the, selected slide. If wants to select multiple object, at once, press the Shift key and click the object, to select them., Applying Custom Animations:, 5 In the MS PowerPoint presentation, select the object, to which you want to add custom animation. If you, want to select multiple objects at once, then press, the Shift key and click the object to select them., 6 Select the Animations tab., , 18 Click the Play button to view animation in the Normal, view. Alternatively, you can click the Slide Show button, to view the animation in the Slide Show view., 19 Click the Close button to close the Custom Animation, Task Pane., Adding Transition, 20 In the MS PowerPoint presentation, select the slide, in which you want to add the transition effect., 21 Select the Animations tab., 22 Click the More button in the Transition to this Slide, group. A drop-down list appears with various, transitions effect options., 23 Select the desired transition effect for your slide. A, star mark appears beside the slide in the Slides tab, to indicate the transition effect is applied., 24 You can view the presentation in the Slide Show to, check the transition effect., Adding Transition Sound, 25 In the MS PowerPoint presentation, select the Slide, in the Slides tab, in which you want to add transition, sound., , 7 Click the Custom Animation button in the Animation, group. The Custom Animation task pane appears at, the right side of the workspace., , 26 Select the Animations tab., , 8 Select the object or text., , 28 Select the desired sound effect for the slide from the, drop-down list. After selecting the sound effect, the, drop-down list disappears and the selected sound, effect is applied to the slide., , 9 Click the Add Effect button. A drop-down list appears., 10 Place the mouse pointer over the desired effect, category. A sub-menu appears., , 27 Click the Transition Sound combo box in the Transition, to this Slide group. A drop-down list appears., , 11 Select the desired effect from the sub-menu., , 29 To remove transition sound, click the No Sound option, in the drop-down list., , 12 Click the Start combo box in the Custom Animation, task pane. A drop-down list appears., , Adding Transition Speed, , 13 Select the desired option from the list. The animation, is played according to the option selected in the dropdown list of the Start combo box., , 30 In the MS PowerPoint presentation, select the Slide, in the Slides tab, want to add transition speed., 31 Select the Animations tab., , 14 Next, click the Direction combo box. A drop-down list, appears., , 32 Click the Transition Speed combo box in the Transition, to This Slide group. A drop-down list appears., , 15 Select the desired option to specify the direction from, where animation will start., , 33 Select the desired speed level for the slide., , 16 Click the Speed combo box. A drop-down list appears., 17 Click the desired option from the drop-down list to, specify the speed of the animation., , 152, , 34 Click the Preview button. The slide runs in the Preview, view to rehearse the animation placed in the, presentation., 35 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.90, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.91, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Convert the given PDF File into Word File using suitable software, Objectives: At the end of this exercise you shall be able to, • Convert PDF file into word file., , Requirement, Tools/Equipments/Instruments, •, •, , Desktop Computer or Laptop, Software, Software PDF to word, converter, , - 1 No, , - as reqd, , PROCEDURE, TASK 1 : Converting the PDF file into Word file, 1 Click start button in desktop window, 2 Select Easy PDF to Word converter in the program, list, 3 Click Easy PDF to Word converter as shown in Fig 1., Fig 1, , 153, , Copyright Free, Under CC BY Licence

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The PDF to Word converter window appear as, shown in Fig 2., Fig 2, , 4 Click file menu and click open menu item in the, window as on Fig 3., Fig 3, , The open dialog window will display as on Fig, 4, in the dialog box select any low size PDF file, and press open button, suddenly the save, dialog box also will appear., , 154, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.91, , Copyright Free, Under CC BY Licence

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Fig 4, , 5 Type the file name and click save any drive as shown, in Fig 5., Fig 5, , After converting to PDF file, the warning, message will display as shown in Fig 6., Fig 6, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.91, , Copyright Free, Under CC BY Licence, , 155

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Electronics & Hardware, Exercise 1.9.92, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Browse search engines, create email accounts, practice sending and receiving, of mails and configuration of email clients, Objectives: At the end of this exercise you shall be able to, • open yahoo website, • open google website, • open dictionary website, • download the image, • download software, • create mail account, • open the mail account, • compose mail, • check the inbox., , Requirement, Tools/Equipments/Instruments, •, •, , Desktop Computer or Laptop, with windows OS, Internet Connection, , - 1 No, , PROCEDURE, TASK 1 : Opening the Yahoo Website, 1 Boot the system, if not booted., , 5 Select Programs as in Fig 2., , 2 Check the internet connection., , Fig 2, , 3 Double click the internet explorer on the desktop or, 4 Choose Start button as in Fig 1., Fig 1, , 156, , Copyright Free, Under CC BY Licence

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6 Click Internet Explorer, , Fig 3, , 7 Opened internet explorer window, 8 Type the website address : www.yahoo.com on, address bar as in Fig 3., 9 Displayed yahoo web site., 10 Get the work checked by the Instructor., , TASK 2 : Opening the Google, 1 Type the address : www.google.com on address bar, as in Fig 4, , Fig 4, , 2 Displayed google website., 3 Get the work checked by the Instructor., , TASK 3 : Opening Dictionary.com website, 1 Type the address : www.dictionary.com on address, bar as in Fig 5, , Fig 5, , 2 Displayed dictionary website., 3 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.92, , Copyright Free, Under CC BY Licence, , 157

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TASK 4 : Downloading a Picture, 1 Type the address : www.google.com on address bar, as in Fig 6., 2 Type the word "Flowers" on text box., Fig 6, , 10 Choose saving location, 11 Click Save button, Download Child Image, 12 Type the address www.yahoo.com on internet explorer, address bar, 13 Displayed yahoo website, 14 Type the word child Image on text box and click search, tab, 15 Choose images tab, 16 More child images are displayed, 17 Choose any one image, 18 Double click the image, 19 Select the image and Right click the mouse button, 20 Click Save picture as in Fig 8, , 3 Click Images tab., , Fig 8, , 4 Click Search image button., 5 More flower images are displayed., 6 Click any one image., 7 Opened the flower image., 8 Select the flower image and right click the mouse, button., 9 Click Save Picture as in Fig 7., Fig 7, , 21 Choose saving location on image., 22 Click Save button., 23 Get the work checked by the Instructor., , TASK 5 : Downloading the Software, 1 Type the text google.com on internet explorer address, bar., 2 Display the google website., , 7 Click Download., 8 Choose saving location., , 3 Type the text "download winzip software" on text box., 4 Click Search button., , 6 Click any one link., , 9 Click Saved button., 10 Get the work checked by the Instructor., , 5 More download link displayed., , 158, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.92, , Copyright Free, Under CC BY Licence

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TASK 6 : Creating a new mail account, 1 Type the text www.gmail.com on internet explorer, address bar, 2 Open gmail website., , 5 Fill all the columns., 6 Finally click I accept button., 7 Created your own gmail account., , 3 Click Sign up for Gmail link., , 8 Get the work checked by the Instructor., , 4 Open the Application window., TASK 7 : Opening the Mail, 1 Type the text www.gmail.com on internet explorer, address bar., , 5 Open mail window., 6 Check Inbox., , 2 Open gmail website., 3 Type the user name and password., , 7 Inbox means received mail., 8 Get the work checked by the Instructor., , 4 Click Sign in button., TASK 8 : Composing email, Step 1, , 7 Click Open button., , 1 Click Compose mail button., , 8 Display message., , 2 Display writing mail window., , 9 Type the body text., , 3 Type the To address : example, [email protected], , 10 Check the spelling., , Step 2, , 11 Finally click send button., 12 Click Sent mail option., , 4 Type the Subject : example : Reg. Leave request., 5 Click Attach a file option., , 13 Displayed sending mail report., 14 Get the work checked by the Instructor., , 6 Choose location for attached file., TASK 9 : Checking Inbox, 1 Check Inbox button, , 4 Click the latest mail., , 2 One mail received is notified by inbox(1)., , 5 Mail will be displayed., , 3 From address rajesh kannan, , 6 Get the work checked by the Instructor., , TASK 10 : Creating a New Mail account in Yahoo site, 1 Type the address www.yahoo.com on internet explorer, address bar, 2 Open yahoo web site, , 6 Display application window, 7 Compulsory Fill all column your details., 8 Finally click these button " create my account", , 3 Click mail option., , 9 Display window for account created., , 4 Open email window, , 10 Get the work checked by the Instructor., , 5 Click signup link., TASK 11 : Entering the yahoo mail, 1 Type the mail id and password, , Check the Inbox, , 2 Click Sign., , 8 Check the inbox button (1 mail received), , 3 Enter the mail account, , 9 Click inbox, , 4 Check Inbox button (received 1 mail)., , 10 Display mail message, , 5 Check Spam mail (received 1 mail), , 11 Get the work checked by the Instructor., , 6 check online user., 7 Check Trash, Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.92, , Copyright Free, Under CC BY Licence, , 159

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TASK 12 : Replying the mail, 1 Click the Reply link., , 8 Click Delete button., , 2 Display the compose window., , 9 Deleted your current selected mail., , 3 Automatically typed sender mail address., , 10 Displayed window for only one mail balanced., , 4 Automatically subject typed sender subject., , Check Contacts, , 5 Only typed message., , 11 Click Contacts link., , 6 Finally click Send button., , 12 Displayed all contacts name., , Removed your Mail, , 13 Get the work checked by the Instructor., , 7 Click received mail check box., TASK 13 : Creating a New Folder, 1 Choose My Folder window., , 4 Type the folder name "Personal"., , 2 Click Add link (right side)., , 5 Folder "Personal" is created., , 3 Created folder name by default in untitled., , 6 Get the work checked by the Instructor., , TASK 14 : Renaming the Folder, 1 Select the Folder., , 4 Type folder name., , 2 Right click the mouse button, , 5 Get the work checked by the Instructor., , 3 Click Rename option., TASK 15 : Deleting the Folder, 1 Select the Folder., , 4 Deleted the selected folder., , 2 Right click the mouse button., , 5 Get the work checked by the Instructor., , 3 Click Delete option., TASK 16 : Moving to Folder, 1 Select the received mail., , 6 Moved to personal folder successfully., , 2 Click the check box., , 7 Displayed message for There are no messages in the, inbox folder., , 3 Click the Move button., 4 Displayed all created folder., 5 Select personal folder., , 8 Check the personal folder., 9 Successfully moved to personal folder one mail., 10 Get the work checked by the Instructor., , 160, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.92, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Exercise 1.9.93, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Identify different types of cables and network components e.g. Hub, switch,, router, modem etc, Objectives: At the end of this exercise you shall be able to, • identify the cable types, • identify the network components., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Modem, Hub, Router, Switch, , Materials/Components, - 1 No, - 1 No, - 1 No, - 1 No, , •, •, •, , Coaxial cable bundle, UTP cable bundle, STP/optical cable, , - as reqd, - as reqd, - as reqd, , Note: The instructor has to select various network cables for this exercise and label them, using numbers., , PROCEDURE, TASK 1 : Identification of different types of cables, 1 Pick one of the labelled cable from the given lot and, identify the types., 2 Record the observations in the table 1 (Refer to the, Chart-1 to identify the name of the cable)., 3 Repeat the steps 1 of 2 for remaining labelled cables., 4 Get the work checked by the Instructor., , Table 1, Sl., No., , Label No, , Type, Name, , Remarks, , 1, 2, 3, 4, 5, , Chart - 1, Various network cables, , Name of the cable, , 161, , Copyright Free, Under CC BY Licence

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TASK 2 : Identification of various devices used in networking., 1 Follow the steps in task 1 (instead of cable use labelled network devices/components), 2 Refer chart- 2 and record the observation using, table 2., , Table 2, Sl., No., , 3 Repeat the steps for remaining labelled devices., , Label No, , Type/Name, of device/, components, , 1, , 4 Get the work checked by the Instructor., , 2, 3, 4, Chart 2, , Various devices used in networking, , 162, , Name of the device, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.93, , Copyright Free, Under CC BY Licence, , Remarks

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Electronics & Hardware, Exercise 1.9.94, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Prepare terminations, make UTP and STP cable connectors and test, Objectives : At the end of this exercise you shall be able to, • prepare a UTP cross cable ends for making connection to the computer, • test the cable with LAN tester., , Requirements, Tools/Equipments/Instruments, •, •, •, , Desktop computers, Crimping tool, LAN tester, , Materials/Components, - 2 Nos, - 1 No, - 1 No, , •, •, , RJ - 45, RJ - 11, , - 1 No, - 1 No, , PROCEDURE, TASK 1: Prepare a UTP cross cable ends for making connection to the computer, The instructor has to arrange the required, length of cross cable, the tool for crimping and, two computer for making connection as shown, in Fig 1., Fig 1, , Crimp tools have two blades. One designed to, cut the cable and other to strip the jacket. While, stripping the cable care should be taken not to, cut the internal wires. Remove the jacket, insulation about an inch. When the jacket, insulation removed you will find eight wires, twisted into four pair for CAT 5 cable as in Fig, 3a and a separator inside the CAT6 cable as, shown in Fig 3b., Fig 3a, , 1 Use crimping tool as shown in Fig 2 to cut through a, cable and strip the cable jacket/insulation using cable, stripper/crimping., Fig 2, , Fig 3b, , 2 Cut the separator off and untwist the wires back to, within one-eighth inch of the jacket., 3 Arrange the wires from left to right in the order they, are to be crimped. The normal crimping order for cross, cable is shown in Fig 4a & Fig 4b., 163, , Copyright Free, Under CC BY Licence

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The colour code wiring order is different for, both ends in cross cable, •, , Cross over cable, , •, , One end, , Fig 4a, , Try to make each wire fits in the slot of the, connector and make each wire reach the end, of its slot. The cable jacket/insulation should, reach just beyond the end of the crimp point, as shown in Fig 7., Fig 7, , Fig 4b, , 7 Verify all the wires are in the correct order, and insert, the connector in to the crimping tool and press to crimp, as shown in Fig 8, 4 Grasp the wires firmly between your fingers and flatten them to remove the curliness, , Fig 8, , The wires must lay flat and together aligned, as closely as possible in order. when finished, the cable should look like as shown in Fig 5., Fig 5, , Now half of the work done. The cable should, look like as shown in Fig 9. The process must, be repeated for the other end of the cable. However the colour code wiring order changes for, cross cable as shown in Fig 10., 5 Cut a few mm while holding them firmly, so they are, all of the same length as shown in Fig 6., , Fig 9, , 6 Slide the RJ45 connector on to the wires making sure, the wires stay lined up, Fig 6, , 164, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.94, , Copyright Free, Under CC BY Licence

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1 Green White, , Fig 10, , 2 Green, 3 Orange White, 4 Blue, 5 Blue White, 6 Orange, 7 Brown White, 8 Brown, , Similarly straight through cable and roll over, cable can be prepared with the help of the, instructor. The colour code wiring order is, shown in Fig 11., , Cross over cable is used to connect between, two hosts (PC's). Straight-through cable is, used in network when connecting a host to a, switch. A rollover cable is used in a networking, environment where a outer/switch is to be, configured from a computer. One end is wired, one way but on the other it is reversed. You, would typically use on end into a serial port on, a PC and the other into the console port of the, switch/router, , Fig 11, , TASK 2: Testing the cable with the LAN tester, 1 Insert one end of the cross cable (prepared in Task 1), into one socket and other end in another plugged in, socket of the LAN tester as shown in Fig 12, , 3 Note the order in which LED's glowing in both the panel, of the LAN tester should correspond to the order, shown in Fig 13, If the LED's doesn't glow, then there is a break in the, cable., , Fig 12, , Fig 13, , Check for the batteries loaded in cable tester, 2 Switch 'ON' the LAN tester., Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.94, , Copyright Free, Under CC BY Licence, , 165

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Electronics & Hardware, Exercise 1.9.95, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Connect network connectivity hardware and check for its functioning, Objectives : At the end of this exercise you shall be able to, • check NIC installed, • install NIC CARD, • connect LAN Chord, • check functionality of network., , Requirement, Tools/Equipments/Instruments, •, •, , Desk top computer or Laptop, NIC card installation, , - 1 No, - 1 No, , PROCEDURE, TASK 1 : Checking whether NIC is installed in Desktop or not, 1 Open whether NIC Card is installed in Desktop, , 2 Click on the Network Adapters and check the, availability of the NIC card, , 166, , Copyright Free, Under CC BY Licence

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3 Right Click on the NIC Card if available and check, properties, , 4 Close all the opened windows on successful, checking., , 5 Get the work checked by the Instructor., , TASK 2 : Installation of NIC Card if not installed, 1 Insert the CD/DVD containing NIC Card driver, Information (or) Download the relevant driver for NIC, card from Internet, 2 Confirm the make of the NIC card and driver using, internet checking tools, 3 Click setup.exe in the drivers folder to install the NIC, card., , 4 Finish on successful installation., 5 Check the card is installed properly using Device, Manager, as it has no yellow or question mark near, the device., 6 Re-install using the 'Search for Drivers using Internet', to find a proper driver automatically., 7 Get the work checked by the Instructor., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.95, , Copyright Free, Under CC BY Licence, , 167

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TASK 3 : Connecting the LAN card and establish network connection, 1 Plug one end of the NIC Card in the Desktop LAN, Port (Ethernet Port)., , 3 Confirm the Desktop LAN Port shows a green light,, which confirms the connection is successful., , 2 Plug the other end into the Switch / Hub / NIC Point, available., , 4 Preview the LAN details for TCP/IP settings to access, the internet from the LAN using the command in Start, -> Run -> command ->ipconfig., , TASK 4 : Checking the functionality of network, 1 Click on Chrome / Firefox logo to open the browser., 2 Type http://www.google .com in the address bar and, wait for opening the Google web page., Note : If the google page appears, internet is, connected successfully. If it is not showing and, displays as page cannot be displayed, internet, is not connected., , 3 Setup a Local Network to connect with other, computers using Setup a Home Network in the control, panel-> Network Setup wizard., 4 Create the workgroup setup to connect with the, network computers., 5 Set values for IP address, file sharing options to, connect and share the system information., 6 Get the work checked by the Instructor., , 168, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.95, , Copyright Free, Under CC BY Licence

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Electronics and Hardware, Exercise 1.9.96, Electronics Mechanic - Computer Hardware, OS,MS Office and Networking, Configure a wireless Wi-Fi network, Objectives: At the end of this exercise you shall able to, • Check Wi-Fi hardware, • Connect Wi-Fi network, • Disconnect Wi-Fi network., , Requirements, Tools/Equipments/Instruments, •, •, , Desk top computer or Laptop, wifi hardware installation, , - 1 No, - 1 No, , PROCEDURE, TASK 1 : Checking the availability of the wifi hardware and installation, 1 Open the control panel and check the Network, adapters for the Wi-Fi., , 2 Check the proper working of Wi-Fi device using, properties., , 169, , Copyright Free, Under CC BY Licence

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3 Install a device if not found in the system as external, Wi-Fi dongle., , 4 Install driver for the device using CD or Internet, download., 5 Check in the device manager for successful, installation., 6 Get the work checked by the Instructor., , TASK 2 : Connecting a Wi-Fi network, 1 Click the wireless icon in the notification area., 2 Select the network to connect., 3 Check the Connect automatically option., 4 Click the Connect button, 5 Enter the network security key., , 6 Click the Next button., Note :If the network flyout is not reporting any, wireless network, try the steps shown below, to turn off and on again Wi-Fi to see if that fixes, the problem., 7 Get the work checked by the Instructor., , TASK 3: Disconnecting of Wi-Fi network, 1 Click the wireless icon in the notification area on the, task bar., 2 Select the network that is currently connected., 3 Click the Disconnect button on the network connection., 4 Get the work checked by the Instructor., , 170, , Note :Alternatively, click the quick action, Wi-Fi button at the bottom to turn off the, adapter and disconnect from the network using, flyout menu.The same Wi-Fi button can also, be found in the Action Center's Quick Actions, section (Windows key + A)., , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.9.96, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - IC Regulators, , Exercise 1.10.97, , Construct and test a +12V fixed voltage regulator using 3 terminal regulator IC, Objectives : At the end of this exercise you shall be able to, • construct and test a +12V regulator using IC 7812., , Requirements, Tools/Equipments/Instruments, •, •, •, •, •, , DC Regulated power supply, 0-30 V/2A, Trainees tool kit, DC ammeter, 0-1A, Digital multimeter with probes, Rheostat 100:/1A, , - 1 No, - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, •, , Suitable heat sink for IC 7812, Capacitor 270 nF, disc/25V, 10 PF/25 V, electrolytic, Red LED/5mm, Resistor 820:, ¼W CR25, Hook up wires (red and black colour), , •, , Wire sleeves (R,Y,G), , •, , Rosin cored solder, , Materials/Components, •, •, , Breadboard, Three-pin voltage regulator, IC 7812 or equivalent, , - 1 No, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, -1m, each, - 2 cm, each, - 10 gm, , - 1 No, , PROCEDURE, 1 From the type code marked on the given 3 pin, regulator IC. Identify the terminals of IC 7812., 2, , Insert sleeves to the terminals using colour coding, scheme given below;, Input - Yellow/Orange sleeve., Common - Green/Black sleeve., Output - Red sleeve., , 3 Get the work done in steps 1 and 2 checked by the, instructor., 4 Fix the suitable aluminium heat sink for IC 7812 on the, bread board Refer Fig 2 for the position of heat sink on, the breadboard., 5 Construct the voltage regulator circuit referring to, the schematic and layout diagram shown in Fig 1 &, Fig 2., , 6 Get the neatness and correctness of your wiring, checked by your instructor., 7 Apply 16 to 20 volts unregulated dc voltage to the input, of the wired 12V regulator. Record the unregulated, input voltage and no-load output voltage of the, regulator in O & T sheet., The unregulated dc voltage to the regulator, should not be more than 24 volts; otherwise the, IC may get damaged., , 171, , Copyright Free, Under CC BY Licence

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8 Using loading rheostat, load the regulator in steps of, 200 mA upto 800mA and at each step measure and, record,, -, , Regulated dc output voltage, , -, , Input and output ripple., , 9 From the recorded readings, calculate the, – output voltage regulation at each step of loading., – ripple rejection at each step of loading., 10 Get the work checked by the Instructor., O & T Sheet, , Loading is limited to 80% of its rated maximum, of 1A. This is because the heat sink used with, IC 7812 may not be very effective in transferring, away the heat., 1 Neatness and correctness of wiring: Very good, , Good, , Satisfactory, , Poor, , Continue Exercise, , 2 Level of unregulated input voltage to the regulator : ____________, , Load - Current, No-load, , 200 mA, , 400 mA, , 600 mA, , Output voltage, Input ripple (P-P), Output ripple, Ripple rejection, Output regulation, , 172, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.10.97, , Copyright Free, Under CC BY Licence, , 800 mA

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Electronics & Hardware, Electronics Mechanic - IC Regulators, , Exercise 1.10.98, , Identify the different types of fixed +ve and -ve regulator ICs and the different, current ratings, Objectives : At the end of this exercise you shall be able to, • construct and test a +12 volts regulator to get a variable output regulation., , Requirements, Tools/Equipments/Instruments, •, •, •, , Trainees tool kit, Semi conductor data book, Multimeter/DMM with probes, , Materials/Components, - 1 Set, - 1 No, - 1 No, , •, , Different types of -ve and +ve, regulator ICs (78/79 series), , - 10 Nos, , Note: The instructor has to label the different, types of fixed positive and negative regulator, ICs., , PROCEDURE, TASK 1 : Identification of different types of fixed positive and negative voltage regulator ICs, 1 Pick one of the labelled IC regulator from the lot,, identify the code number and other details and record, the observations in Table 1., , 3 Repeat the steps 1 and 2 for the remaining labelled IC, regulators and record the observation and note down, in Table 1., , 2 Refer the semiconductor data manual and verify the, 4 Get the work checked by the Instructor., details of the IC regulators, compare and record in, Table 1., Table 1, Sl.No., , Label No., , Type of regulators, (+ve/-ve), , Voltage rating, , Current rating, , Remarks, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, , 173, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - IC Regulators, , Exercise 1.10.99, , Identify different heat sinks for IC based regulators, Objectives : At the end of this exercise you shall be able to, • identify the different +ve and -ve regulator ICs, • Identify the types of package, • Identify the different heat sinks for regulators ICS., , Requirements, Tools/Equipments/Instruments, •, •, •, , Trainees tool kit, Multimeter/DMM with probes, Semi conductor data manual, , Materials/Components, - 1 Set, - 1 No, - 1 No, , •, , Different types of heat sinks, used for IC regulators, , - as reqd, , Note: The instructor has to label the different, types of heatsinks used for IC regulators., , PROCEDURE, TASK 1 : Identification of different types of heat sinks used for IC based regulators, 1 Pick any one of the labelled heatsink from the lot,, identify the type and record in Table 1., , 3 Repeat the steps 1 & 2 for the remaining labelled, heatsinks and record it in Table 1., , 2 Refer to the chart 1 and verify the details of different, types of heatsinks and record in Table 1., , 4 Get the work checked by the Instructor., Table 1, , Sl.No., , Label No., , Regulator type, , Suitable heat sink type, , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, , 174, , Copyright Free, Under CC BY Licence, , Remarks

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Electronics & Hardware, Electronics Mechanic - IC Regulators, , Exercise 1.10.100, , Observe the output voltage of different IC 723 metal / plastic type and IC 78S40, regulators by varying the input voltage with fixed load, Objectives : At the end of this exercise you shall be able to, • observe the output voltage of IC 723 and IC 78S40 regulators., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Trainees tool kit, Soldering Iron 25W/240VAC, Digital multimeter with probes, Ammeter, , Materials/Components, - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, •, •, •, •, •, •, , Breadboard, IC 723, Capacitor 100PF, Resistor 1k:/½W, Resistor 2.7k:/½W, Resistor 6.8k:/½W, Resistor 4.7k:/½W, 10: Potentiometer/1A carbon type, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, , PROCEDURE, 1 From the type code marked on the given 14 pin, positive regulator IC., 2 Identify the pins of IC 723 and insert sleeves to the, terminals using colour coding scheme given below, , Table 1, S No., , Input Yellow / Orange Sleeve, , 1, , Output Red sleeve, , 2, , Earth - Green / Black sleeve., , 3, , 3 Construct the voltage regulator circuit referring to the, schematic circuit diagram shown in Fig 1., , 4, , 4 Get the neatness and correctness of the wiring checked, by the instructor., , 6, , 5 Apply regulated dc voltage to the input of the wired, regulator. Record the output voltage of the regulator, in Table 1., 6 From the recorded readings. Calculate the output, voltage regulation at each step and plot the graph., , Input voltage, (Vi) in Volts, , Output voltage in volts, (Vo) in Volts, , 5, 7, 8, 9, 10, , 7 Get the work checked by the Instructor., , 175, , Copyright Free, Under CC BY Licence

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176, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.10.100, , Copyright Free, Under CC BY Licence

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Electronics & Hardware, Electronics Mechanic - IC Regulators, , Exercise 1.10.101, , Construct and test a 1.2V to 30V variable output regulated power supply using, IC LM317T, Objectives : At the end of this exercise you shall be able to, • construct and test a 1.2 V to 30 V variable output regulated power supply., , Requirements, Tools/Equipments/Instruments, •, •, •, •, , Trainees tool kit, Soldering Iron 25W/230V, Digital multimeter with probes, Rheostat 100:/1A, , - 1 Set, - 1 No, - 1 No, - 1 No, , •, •, , Materials/Components, •, •, •, •, , Breadboard/PCB, Step down transformer, 240V/24V or, 12-0-12/24V, Diodes, 1N4002 or BY127 or Eqv, Capacitors 2200 μF/50V, electrolytic, , - 1 No, - 1 No, - 6 Nos, - 1 No, , •, •, •, •, •, , 25 μF/50V, electrolytic, 10 μF/50V, electrolytic, 100 nF, ceramic disc, LED, Red, 5mm, Resistors, 4K7, potentiometer, carbon, rotary, 2K2, carbon, ½W, 220:, carbon, ¼W, 3-terminal voltage regulator, LM317T,, TO-220, 1A, slow blow fuse with fuse holder, Hook up wires, Rosin cored solder, Heat sink for TO-220 package, , - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, - 1 No, each, - 1 No., - as reqd, - 20 gm, - 1 No, , PROCEDURE, 1 Test all the components to confirm their good working, condition. Record the specifications of IC LM317T in, O&T sheet, refer with semi conductor data manual., 2 Check the given bread board., 3 Construct a variable regulated output power supply on, the given bread board referring to the schematic, shown in Fig 1., , All components except the transformer to be, mounted on bread board. Use suitable heatsink, with IC 317 T., 5 Get the correctness and neatness of wiring checked, by the instructor., 6 Diagram connect the secondary of (230/24V), transformer to the assembled circuit. Switch ON, mains supply., , 177, , Copyright Free, Under CC BY Licence

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10 Using a dc current meter (0-1A range) short the load, terminals momentarily and record the short circuit fold, back protection current level., , Switch OFF main supply immediately if burning,, smoking overheating, sparks are observed in, any of the components, and report to the, instructor. Check the IC and ensure that it is not, heated-up, , 11 Get the readings checked by the instructor., Lab Assignment: Mount the regulator IC on a, good aluminium heat-sink (available in market)., If a good heat-sink is used with the IC, you can, draw upto 1Amps easily. Mount the transformer, and the wired PCB in a metallic box of suitable, size. Mount the POT on the front panel of the, box made. Mount output terminal sockets (Red, and black) on the front panel of the box from, which DC voltage can be taken. This will serve, you as a 1.2V to 30V, 1A rating variable power, supply for servicing circuits in forthcoming, exercises as well for the hobby gadgets and, general servicing., , 7 Measure and record the unregulated dc input and the, minimum, maximum variable voltage of the regulator, under no-load condition., 8 Set the output to +15 volts and load the output using a, loading rheostat in steps of 200 mA up to 600 mA. In, each step measure and record the output voltage and, the ripple voltages., Load current is restricted to 600mA as heatsink is provided to the IC may not be the ideal, one., 9 Calculate and record the output regulation and ripple, rejection of the regulator., , Table 1, Type, number, , Package, type, , Output voltage, Min., , Max., , Max. output, current, , 1 Specification of the given 3-terminal regulator IC., 2 Neatness and correctness of wiring:, , Very good, , Good, , Satisfactory, , Poor, , Continue Exercise, , 3, Unregulated dc input to regulator, , :, , ____________________, , Minimum adjustable output voltage (No-load), , :, , ____________________, , Maximum adjustable output voltage (No-load), , :, , ____________________, , 4, Set output voltage : 15 volts, Load current, , 200mA, , 300mA, , 400mA, , 500mA, , 600mA, , Output voltage, Output ripple (p-p), Input ripple, Output regulation, , 178, , Electronics & Hardware: Electronics Mechanic (NSQF Level - 5) - Exercise 1.10.101, , Copyright Free, Under CC BY Licence