The core loss of a single phase, 230/115 V, 50Hz power transformer is measured from 230 V side by feeding t he pr imar y (230 V side) fr om a variable voltage variable frequency source while keeping the secondary open circuited. The core loss is measured to be 1050 W for 230 V, 50 Hz input. The core loss is again measured to be 500 W for 138 V, 30 Hz input. The hysteresis and eddy current losses of the transformer for 230 V, 50Hz input are respectively.

The core loss of a single phase, 230/115 V, 50Hz power transformer is

1.	The core loss of a single phase, 230/115 V, 50Hz power transformer is measured from 230 V side by feeding t he pr imar y (230 V side) fr om a variable voltage variable frequency source while keeping the secondary open circuited. The core loss is measured to be 1050 W for 230 V, 50 Hz input. The core loss is again measured to be 500 W for 138 V, 30 Hz input. The hysteresis and eddy current losses of the transformer for 230 V, 50Hz input are respectively.
A.	508 W and 542 W
B.	468 W and 582 W
C.	498 W and 552 W
D.	488 W and 562 W
Answer» B. 468 W and 582 W

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