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A 480V, 60Hz, 50hp, three phase induction motor draws 60 amps at 0.85 power factor lagging....

A 480V, 60Hz, 50hp, three phase induction motor draws 60 amps at 0.85 power factor lagging. The stator copper losses are 2kW and the rotor copper losses are 700W. The friction and windage losses are 600W, the core losses are 1800W.

(1) Determine the airgap power.

(2) Determine the power converted into mechanical form.

(3) Determine the net output power.

(4) Determine the efficiency of the motor.

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