Electrical Machines
In induction motors, there is large decrease in maximum power factor when the dispersion coefficient is ________________.

  increased.
 decreased.
 kept constant to certain value.
 remains same.

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Electrical Machines
The synchronous motor can be started by

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

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