![A single-phase 100 kVA, 1000 V / 100 V, 50 Hz transformer has a voltage drop of 5% across its](https://www.gkseries.com/blog/wp-content/uploads/2023/09/A-single-phase-100-kVA-1000-V-100-V-50-Hz-transformer-has-a-voltage-drop-of-5-across-its.jpg)
Q. 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
Ans: 4.8