sparksacademychennai@gmail.com +91 8190879379 Saidapet, Chennai

MCQ - 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