Question Text
Question 2 :
The process of making hollow castings of desired thickness by permanent mould without the use of cores is known as:
Question 3 :
The colour marked on the surface of a pattern to be machined is:
Question 5 :
A casting defect which results in general enlargement of the casting is known as:
Question 7 :
Which of the following moulding processses does not require use of cores??
Question 9 :
The proportion of acetylene and oxygen used in gas welding is:
Question 10 :
In arc welding, the temperature in degrees of heat produced by the electric arc is the order of
