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MCQ - Mechanical TNPSC JTO
JTO - 440 - Welder - 440 - Unit VIII Arc Welding Electrode

51)   

Hardfacing electrodes are used for:

A.
B.
C.
D.
Answer: B
52)   

Cast iron welding is often done with

A.
B.
C.
D.
Answer: B
53)   

Stainless steel welding generally requires:

A.
B.
C.
D.
Answer: B
54)   

Copper and copper alloys are welded with:

A.
B.
C.
D.
Answer: B
55)   

For welding in wet or underwater conditions, the electrodes used are:

A.
B.
C.
D.
Answer: B
56)   

Low-hydrogen electrodes are used to:

A.
B.
C.
D.
Answer: A
57)   

Hardfacing electrodes are mainly coated with:

A.
B.
C.
D.
Answer: A
58)   

Manganese steel is welded using:

A.
B.
C.
D.
Answer: B
59)   

Which electrode is used for surfacing of cutting tools?

A.
B.
C.
D.
Answer: B
60)   

Graphite electrodes are mainly used for:

A.
B.
C.
D.
Answer: B
61)   

Special electrodes for repairing cracks in engine blocks are generally:

A.
B.
C.
D.
Answer: A
62)   

Bronze welding of steel uses electrodes coated with:

A.
B.
C.
D.
Answer: B
63)   

Special electrodes with thick coating for large gaps are called:

A.
B.
C.
D.
Answer: A
64)   

Electrodes for aluminium welding are generally made of:

A.
B.
C.
D.
Answer: A
65)   

Cobalt-based alloy electrodes are used in:

A.
B.
C.
D.
Answer: B
66)   

Weldability refers to:

A.
B.
C.
D.
Answer: B
67)   

Which has the best weldability?

A.
B.
C.
D.
Answer: A
68)   

High carbon steels are difficult to weld because:

A.
B.
C.
D.
Answer: B
69)   

Aluminium welding difficulty is due to:

A.
B.
C.
D.
Answer: A
70)   

Cast iron has poor weldability due to:

A.
B.
C.
D.
Answer: A
71)   

Copper welding is difficult because of:

A.
B.
C.
D.
Answer: B
72)   

Which metal requires special preheating for welding?

A.
B.
C.
D.
Answer: B
73)   

Best welding method for stainless steel:

A.
B.
C.
D.
Answer: A
74)   

Which of the following metals is most prone to hydrogen cracking?

A.
B.
C.
D.
Answer: B
75)   

Low alloy steels have weldability:

A.
B.
C.
D.
Answer: B