railway RRB JE (CBT I + CBT II) Mock Test 2024 Power Electronics and Drives AC Voltage Controllers Single Phase Voltage Controllers
A single phase ac voltage controller feeding a pure resistance load has a load voltage of 200 V (rms) when fed from a source of 250 V (rms). The input power factor of the controller is
1
0.894
2
Difficult to estimate because of insufficiency of data
3
0.64
4
0.8