railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Transformer Transformer Copper Losses
The iron loss in a 10 kVA 240/100 V single-phase transformer is 100 watts. The maximum efficiency occurs at full load, when the secondary current is 50 Amps, Copper loss in the transformer will be:
1
100 W
2
50 W
3
25 W
4
10 W