Electrical Machines
In large sized DC machines the compensating windings are provided to

  neutralize voltage induced in coil due to fluctuation of l
None of these
 reduce eddy current losses by providing local short circuits.
 compensate for the decrease in speed due to increase of load.

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Electrical Machines
In a 3 - Φ induction motor

  power factor at starting is low as compared to that while running.
  none of them.
  power factor at starting in the same as that while running.
  power factor at starting is high as compared to that while running.

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