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Study MCQ
Sheet Metal Worker
WELDING 3 ARC AND RESISTANCE WELDING
Set 3
Set 3
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Which is the working principle of AC welding transformer?
A
External Induction
B
Mutual Induction
C
Core Induction
D
Mutual Reduction
Q10871
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Which is a disadvantage of AC welding?
A
Less initial cost
B
Less maintenance cost
C
Not suitable for welding of Non-ferrous metals
D
Freedom from Arc blow
Q10872
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Which is the function of welding rectifier?
A
Reduces AC voltage
B
Increases AC voltage
C
Convert AC into DC
D
Increases AC current
Q10873
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Which is a disadvantage of DC Welding?
A
Higher working efficiency
B
Lower working efficiency
C
No noise
D
Less maintenance cost
Q10874
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What is the purpose of prime mover provided in the welding generator?
A
To convert AC into DC
B
To take AC main supply
C
To rotate the Armature
D
To supply DC for welding
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