A 3-phase, well-connected, 12-pole induction motor is rated 500 hp, 2200V, 60 Hz. The stator resistance per phase is 0.4 , the rotor resistance per phase in stator terms is

2ohms, and the total rotor and stator reactance per phase in stator terms is 2 2. With rated voltage and frequency applied, the motor slip is0.02. For this condition, find, on a per-phase basis, (a) the stator current (neglect magnetizing current),(b) the developed torque, (c) the rotor power input, (d) the rotor copper loss.Ans. (a) 120 A; (b) 2292 N • m; (c) 144 kW; (d) 2880 W