railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Transformer Efficiency of a Transformer
A 5 kVA transformer has iron loss of 200 W and full load copper loss of 350 W. The maximum efficiency of the transformer would occur when the total loss is _________.
1
300 W
2
200 W
3
275 W
4
400 W