Gate EE-2014-3 Question Paper With Solutions

Q. 46 An open circuit test is performed on 50 Hz transformer, using variable frequency
source and keeping V/f ratio constant, to separate its eddy current and hysteresis
losses. The variation of core loss/frequency as function of frequency is shown in
the figure


The hysteresis and eddy current losses of the transformer at 25 Hz respectively
are

(A) 250 W and 2.5 W

(B) 250 W and 62.5 W

(C) 312.5 W and 62.5 W

(D) 312.5 W and 250 W

Answer:(B)

Explanation:

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