1. A 3 phase induction motor is running at 2% slip. If rotor input is 1000 W, then gross mechanical power developed by the rotor is _____ .
2. A 8 pole 3 phase induction motor operates from a supply whose frequency is 50 Hz. If the slip of the motor is 4%, calculate the speed of the motor
3 . A 3-phase, 6-pole, 50 Hz induction motor develops maximum torque at 960 rpm. If the rotor resistance is 0.12 Ω, what is the standstill rotor reactance?
[Hint with simple calculation]