engineering recuitment UPPCL Technician Electrician 2022 Mock Test Electrician and Wireman Electrical Machines Polyphase Induction Motors
A 4-pole, 3-phase induction motor is driven from a supply whose frequency is 50 Hz. Calculate the frequency of rotor current at rest.
1
40 Hz
2
60 Hz
3
50 Hz
4
30 Hz