railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Electrical Machines Three Phase Induction Motor Induction Motor Slip
An 8 pole, 3-phase, 50 Hz induction motor is operating at 720 rpm. The frequency of rotor current is
1
4 Hz
2
3 Hz
3
2 Hz
4
1 Hz