Electrical Machines
If an induction machine is run at above the synchronous speed it acts as

 an induction generator
None of these
 an induction motor
 a synchronous motor

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Electrical Machines
The synchronous motor can be started by

  coupling it with a DC compound motor.
  coupling it with a small AC induction motor called the pony motor.
  any of the above methods.
  providing damper winding in its rotor circuit.

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