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MCQ - TNPSC JTO

JTO - 440 - Welder

440 - Unit VII SMAW Defects

17)   

AC welding is preferred over DC to avoid arc blow because:

A.
B.
C.
D.
Answer: A
18)   

Arc blow is more common in:

A.
B.
C.
D.
Answer: B
19)   

Arc blow due to poor earthing can be reduced by:

A.
B.
C.
D.
Answer: B
20)   

Which welding position is more prone to arc blow?

A.
B.
C.
D.
21)   

Which factor is the main cause of distortion in welding?

A.
B.
C.
D.
22)   

Distortion in welding occurs primarily due to:

A.
B.
C.
D.
23)   

Which type of distortion results in a “bowing” of the welded plate?

A.
B.
C.
D.
24)   

Angular distortion is most common in:

A.
B.
C.
D.
25)   

Which welding technique helps in reducing distortion?

A.
B.
C.
D.
26)   

Which of the following is NOT a method of controlling distortion?

A.
B.
C.
D.
27)   

“Transverse shrinkage” occurs in the direction:

A.
B.
C.
D.
28)   

In gas welding, distortion is more pronounced because:

A.
B.
C.
D.
29)   

The main purpose of tack welding before final welding is to:

A.
B.
C.
D.
30)   

Which sequence reduces distortion in welding long joints?

A.
B.
C.
D.
31)   

Which distortion type is characterized by bending along the weld line?

A.
B.
C.
D.
32)   

Excessive distortion in thin plates can be avoided by:

A.
B.
C.
D.