engineering recuitment GATE EE 2023-24 Test Series Electrical Machines Transformer Regulation of a Transformer
A 20 kVA, 2500/250 V, single-phase transformer gave the following test results:
O.C Test: 250V, 1.6 A, 100 W
S.C Test: 60V, 6A, 90 W
Which of the following is/are correct regarding voltage regulation of the above transformer (at the rated condition).
1
The voltage regulation at 0.8 p.f lagging is 2.5%
2
The voltage regulation at 0.8 p.f leading is -1.22%
3
The voltage regulation at 0.8 p.f lagging is 5%
4
The voltage regulation at 0.8 p.f leading is 0%