railway RRB JE (CBT I + CBT II) Mock Test 2024 Power Systems PU System and Symmetrical Components Per Unit System
A synchronous generator rated 11 kV, 50 MVA has a per unit impedance of 0.2 pu on its own base. Then its impedance referred to a 22 kV, 150 MVA base would be
1
0.133 pu
2
0.2 pu
3
0.1 pu
4
0.15 pu