Multiple Choice
Preheating is usually done while welding
A) Cast iron
B) Aluminium
C) Thin sheets of mild steel
D) Thick sheets of mild steel
E) Copper
Correct Answer:

Verified
Correct Answer:
Verified
Q30: The important factor to be considered while
Q31: International Prototype Meter is made of<br>A)Copper<br>B)Mild steel<br>C)Cast
Q32: An idler pulley is used for<br>A)Changing the
Q33: Shear angle varies with<br>A)Feed<br>B)Depth of cut<br>C)Material of
Q34: Kuock out mechanism in press is used
Q36: While using HSS tools on a lathe,
Q37: Cyaniding<br>A)A process of annealing a ferrous alloy<br>B)A
Q38: In climb milling<br>A)Work moves in same direction
Q39: Carbondioxide is<br>A)Neutral gas<br>B)Combustible gas<br>C)Rare gas<br>D)Inactive gas<br>E)Ionic gas
Q40: Weld spatter is<br>A)A flux<br>B)A filler material used