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MCQ - Mechanical TNPSC JTO
JTO - 440 - Welder - 440 - Unit X Gas Tungsten Arc Welding

51)   

In GTAW, the tungsten electrode is:

A.
B.
C.
D.
Answer: B
52)   

Which shielding gas is most commonly used in GTAW?

A.
B.
C.
D.
Answer: A
53)   

In GMAW (CO₂ welding), the electrode is supplied in:

A.
B.
C.
D.
Answer: C
54)   

Which process uses a molten slag bath for welding?

A.
B.
C.
D.
Answer: B
55)   

GTAW is preferred for welding:

A.
B.
C.
D.
Answer: B
56)   

In GTAW, high-frequency current is often used for:

A.
B.
C.
D.
Answer: B
57)   

Submerged arc welding hides the arc under:

A.
B.
C.
D.
Answer: B
58)   

Thermit welding is based on:

A.
B.
C.
D.
Answer: C
59)   

Which welding method is commonly used for joining railway tracks?

A.
B.
C.
D.
Answer: B
60)   

Resistance spot welding produces heat according to:

A.
B.
C.
D.
Answer: A
61)   

In seam welding, the electrodes are:

A.
B.
C.
D.
Answer: C
62)   

Projection welding uses:

A.
B.
C.
D.
Answer: B
63)   

Flash butt welding uses:

A.
B.
C.
D.
Answer: B
64)   

Friction welding joins metals by:

A.
B.
C.
D.
Answer: B
65)   

Plasma arc welding uses temperatures up to:

A.
B.
C.
D.
Answer: C
66)   

Plasma cutting can be used on:

A.
B.
C.
D.
Answer: B
67)   

Which plastic welding method uses a heated tool pressed against the joint?

A.
B.
C.
D.
Answer: A
68)   

Polypropylene and polyethylene welding is mostly done by:

A.
B.
C.
D.
Answer: B
69)   

Induction welding produces heat by:

A.
B.
C.
D.
Answer: C
70)   

GTAW is also called:

A.
B.
C.
D.
Answer: B
71)   

In GMAW, short-circuiting transfer is used for:

A.
B.
C.
D.
Answer: B
72)   

Spray transfer mode in GMAW is best suited for:

A.
B.
C.
D.
Answer: B
73)   

Which of the following is not an advantage of GTAW?

A.
B.
C.
D.
Answer: C
74)   

The term “CO₂ welding” refers to:

A.
B.
C.
D.
Answer: B
75)   

Plasma arc welding uses a:

A.
B.
C.
D.
Answer: A