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MCQ - Mechanical TNPSC JTO
JTO - 440 - Welder - 440 - Unit VII SMAW Defects

1)   

Arc blow in SMAW is primarily caused by:

A.
B.
C.
D.
Answer: B
2)   

Arc blow is most common in:

A.
B.
C.
D.
Answer: B
3)   

Which type of arc blow occurs when the arc is pushed forward along the joint?

A.
B.
C.
D.
Answer: B
4)   

Magnetic arc blow can be reduced by:

A.
B.
C.
D.
Answer: C
5)   

The main cause of back blow is:

A.
B.
C.
D.
Answer: A
6)   

Arc blow is more severe when:

A.
B.
C.
D.
Answer: A
7)   

Which method helps to control arc blow?

A.
B.
C.
D.
Answer: A
8)   

The distortion of the arc due to magnetic field is called:

A.
B.
C.
D.
Answer: C
9)   

Forward arc blow is common at:

A.
B.
C.
D.
Answer: C
10)   

One way to prevent arc blow during root pass is:

A.
B.
C.
D.
Answer: B
11)   

Arc blow can cause:

A.
B.
C.
D.
Answer: B
12)   

In DC welding, arc blow is less severe when using:

A.
B.
C.
D.
Answer: A
13)   

One common way to reduce arc blow is to:

A.
B.
C.
D.
Answer: A
14)   

Arc blow can lead to:

A.
B.
C.
D.
Answer: B
15)   

In pipeline welding, arc blow is reduced by:

A.
B.
C.
D.
Answer: A
16)   

Which is NOT a cause of arc blow?

A.
B.
C.
D.
Answer: D
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.
Answer: C
21)   

Which factor is the main cause of distortion in welding?

A.
B.
C.
D.
Answer: B
22)   

Distortion in welding occurs primarily due to:

A.
B.
C.
D.
Answer: B
23)   

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

A.
B.
C.
D.
Answer: B
24)   

Angular distortion is most common in:

A.
B.
C.
D.
Answer: A
25)   

Which welding technique helps in reducing distortion?

A.
B.
C.
D.
Answer: B