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MCQ - TNPSC JTO

JTO - 440 - Welder

440 - Unit IV Arc Welding Power Sources

17)   

Silicon-controlled rectifiers (SCR) in welding are used for:

A.
B.
C.
D.
Answer: B
18)   

The efficiency of inverter welding machines is typically:

A.
B.
C.
D.
Answer: C
19)   

Which device stores energy temporarily in an inverter welder?

A.
B.
C.
D.
Answer: B
20)   

In welding, ripple in DC output from rectifiers should be

A.
B.
C.
D.
21)   

In arc welding, AC transformer welding sets are best suited for:

A.
B.
C.
D.
22)   

DC generator welding sets produce:

A.
B.
C.
D.
23)   

Rectifier welding machines can use:

A.
B.
C.
D.
24)   

Inverter welding sets can operate on:

A.
B.
C.
D.
25)   

TIG welding machines are usually:

A.
B.
C.
D.
26)   

MIG welding machines need an additional:

A.
B.
C.
D.
27)   

SAW (Submerged Arc Welding) machines are generally:

A.
B.
C.
D.
28)   

Which welding machine type is most energy-efficient?

A.
B.
C.
D.
29)   

Which welding set is least portable?

A.
B.
C.
D.
30)   

Multi-process welding machines can perform:

A.
B.
C.
D.
31)   

The primary step in welding machine maintenance is:

A.
B.
C.
D.
32)   

Transformer coils should be protected from:

A.
B.
C.
D.