11. A 3-phase induction motor has a rotor for which the resistance per phase is 0.1 2 and the reactance per phase when stationary is 0.4 2. The rotor induced e.m.f. per phase is 100 V when stationary....

Extracted text: 11. A 3-phase induction motor has a rotor for which the resistance per phase is 0.1 2 and the reactance per phase when stationary is 0.4 2. The rotor induced e.m.f. per phase is 100 V when stationary. Calculate the rotor current and rotor power factor (a) when stationary (b) when running with a slip of 5 per cent. |(a) 242.5 A; 0.243 (b) 49 A; 0.98]