railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Transformer Regulation of a Transformer
A transformer has resistance and reactance in per unit as 0.05 and 0.09 respectively. Its voltage regulation at full load for 0.8 power factor lagging and leading will be
1
4.8% and - 1.6%
2
6.4% and - 2.4%
3
9.4% and - 1.4%
4
None of the above