railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Transformer Transformer Core Losses

Two transformers, each having iron loss of Pi watts and full-load copper loss Pc, are put to back to back test and full-load current is allowed to flow through the secondaries, the total input power will be

1
2 Pi
2
2 Pc
3
P­I + P­c
4

2(Pi + Pc)

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