Electrical Engineering > Gate 2018 > Transformer
A single-phase 100 kVA, 1000 V / 100 V, 50 Hz transformer has a voltage drop of 5% across its series impedance at full load. Of this, 3% is due to resistance. The percentage regulation of the transformer at full load with 0.8 lagging power factor is
A
4.8
B
6.8
C
8.8
D
10.8

Correct : c

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