Answer / shrirang

when the induction motor is run above the synchronous speed
the induction motor feeds active power in the three phase line

Answer / bosky babu

As the Induction motor works on induction principle. that is if we give supply to the stator a voltage is induced in rotor, as the rotor is short circuited a heavy current is flowing thorough the rotor conductor,thus a torque is developed in it and it starts rotating.
Instead of giving supply to stator, if we given the supply to rotor windings by using carbon brushes, we can get the induced voltage in stator.

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