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ELECTRICAL MACHINES

Electrical Machines
In a synchronous motor, damper windings are provided on

  rotor shaft.
None of these
  stator frame.
  pole faces.

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Electrical Machines
Hunting in a synchronous cannot be due to

  windage friction.
  variable frequency.
  variable load.
  variable supply voltage.

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Electrical Machines
The torque angle, in a synchronous motor, is the angle between

  the rotating stator flux and rotor flux.
  magnetizing electric current and back emf.
  the supply voltage and the back emf.
None of these

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Electrical Machines
A synchronous motor will deliver maximum power when

  load angle is equal to internal angle θ.
  load angle is 0°.
  input power factor is unity.
  load angle is 45°.

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Electrical Machines
In a synchronous motor hunting can be reduced to minimum possible by

  any of above methods.
  using a flywheel.
  designing the motor for adequate synchronizing power.
  providing damper winding in the rotor pole faces.

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