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Q6. A three phase, six pole, delta connected induction motor is supplied at 380 V, 60 Hz.

It draws a current of 45 A at a power factor of 0.85 lag.

The stator losses are 4 kW and the windage and friction losses total 3 kW. It runs at 19 rev/sec.

Calculate EACH of the following:

(a) The rotor copper loss; (8)

(b) The shaft output power; (4)

(c) The shaft output torque. (4)