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

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

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Electrical Machines
In DC machines, the interpoles are provided

  both (B) and (C).
 to counteract the reactance voltage and the cross-magnetizi
 to counteract demagnetizing effect of armature mmf in commutating zone.
  to make commutation spark less.

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