Electrical Machines
A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

 24.11 kW.
 25 kW.
 26.21 kW.
 23.06 kW.

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Electrical Machines
In a 3 - Φ induction motor

  none of them.
  power factor at starting is high as compared to that while running.
  power factor at starting in the same as that while running.
  power factor at starting is low as compared to that while running.

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