engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Fitter Joining Welding

A welding transformer is used to convert the

1

D.C. main supply into an A.C. welding supply

2

A.C. main supply into a A.C. welding supply

3

A.C. main supply into a D.C. welding supply

4

D.C. main supply to D.C. welding supply

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