Q. 46 The core loss of a single phase, 230/115 V, 50 Hz power transformer is measured
from 230 V side by feeding the primary (230 V side) from 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, 50 Hz 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:(A)
Explanation:
