Electrical Machines
Cross magnetization effects which of the following?

 commutation
 reduction in main field flux
 reduces the terminal voltage
 both 2 and 3

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Electrical Machines
The synchronous motor can be started by

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

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