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Q4. A three phase. 440 V, 60 Hz, 8 pole induction motor runs at a power factor of 0.85 lag and drives a load of 8 kW at a speed of 14.4 rev/s. The stator loss is 1 kW and the rotation losses (windage and friction) amount to 0.8 kW.

Calculate EAVH of the following:

(a) The synchronous speed; (3)

(b) The rotor copper loss; (5)

(c) The input power to the motor;(4)

(d) The motor current. (4)