railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Power Systems PU System and Symmetrical Components Per Unit System
Per unit impedance of an alternator is 0.2. If the base voltage is decreased by 1.1 times, then the updated per unit impedance value will be:
1
0.22
2
0.2
3
0.181
4
0.242