Hysteresis and eddy current losses of single-phase transformer working – McqOptions

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1.	Hysteresis and eddy current losses of single-phase transformer working on 200 V, 50 Hz is Ph and Pc respectively. The percentage decrease in Ph and Pc, when the transformer operates on 160 V, 40 Hz supply, will respectively be
A.	32, 36
B.	25, 50
C.	20, 36
D.	40, 80
Answer» D. 40, 80

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