railway RRB JE (CBT I + CBT II) Mock Test 2024 Fitter Coatings

In nickel plating

1
at job cathode AC current while at Nickel anode DC current flows.
2
at job cathode DC current while at Nickel anode AC current flows.
3
at both job cathode and in Nickel anode DC current flows.
4
at both job cathode and in Nickel  anode AC current flows.
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