Sparks Academy
SPARKS ACADEMY
Online Test Series
8190879379 Chennai

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

1)   

In AC welding, the direction of current flow changes

A.
B.
C.
D.
Answer: A
2)   

DC welding provides

A.
B.
C.
D.
Answer: B
3)   

The welding machine that converts AC to DC is called

A.
B.
C.
D.
Answer: B
4)   

In DCEN polarity, electrons flow from

A.
B.
C.
D.
Answer: B
5)   

DCEP is preferred for

A.
B.
C.
D.
Answer: B
6)   

Which welding power source provides constant voltage?

A.
B.
C.
D.
Answer: B
7)   

In AC welding, arc blow problem is

A.
B.
C.
D.
Answer: B
8)   

Which type of welding is best for aluminum?

A.
B.
C.
D.
Answer: A
9)   

AC welding machines are generally

A.
B.
C.
D.
Answer: A
10)   

The main advantage of DC welding over AC welding is

A.
B.
C.
D.
Answer: B
11)   

In GTAW, the electrode is

A.
B.
C.
D.
Answer: B
12)   

Tungsten electrodes are classified by

A.
B.
C.
D.
Answer: D
13)   

Pure tungsten electrodes are marked with

A.
B.
C.
D.
Answer: B
14)   

Thoriated tungsten electrodes are best suited for

A.
B.
C.
D.
Answer: B
15)   

In GTAW, filler rods are fed

A.
B.
C.
D.
Answer: B
16)   

In GMAW, the electrode is

A.
B.
C.
D.
Answer: A
17)   

Which gas is most commonly used in GTAW for stainless steel?

A.
B.
C.
D.
Answer: B
18)   

CO₂ shielding gas in GMAW is preferred for

A.
B.
C.
D.
Answer: A
19)   

A spool gun is used in GMAW for

A.
B.
C.
D.
Answer: B
20)   

Torch body, handle, collet, and nozzle are parts of

A.
B.
C.
D.
Answer: B
21)   

Which shielding gas mixture is used in GMAW for better arc stability?

A.
B.
C.
D.
Answer: A
22)   

GMAW with short circuit transfer is suitable for

A.
B.
C.
D.
Answer: B
23)   

In GTAW, AC current is mainly used for

A.
B.
C.
D.
Answer: B
24)   

The wire feed system in GMAW controls

A.
B.
C.
D.
Answer: B
25)   

The gas flow in GTAW is controlled by

A.
B.
C.
D.
Answer: D