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

In an autotransformer of voltage ratio, V1/V2 with V1 > V2, the fraction of power transferred inductively is proportional to -

1
V1/V2
2
V2/V1
3
(V1 - V2)/V1
4
V1 - V2/V2
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