engineering recuitment GATE EE 2023-24 Test Series Electrical Machines Transformer Transformer Core Losses
The core loss of a single phase, 230/115 V, 50Hz 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 gain 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
1
508 W and 542 W
2
468 W and 582 W
3
498 W and 552 W
4
488 W and 562 W