Electrical Machines
Which of the following is/are the methods to reduce the armature reaction and its effects?

 pole chamfering
 pole stacking
All of these
 compensating winding

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Electrical Machines
The compensating winding in a DC machine

 is located in armature slots for compensation of the armature reaction.
  is located on pole shoes to avoid the sparking at the brushes.
  is located on pole shoes for avoiding the flashover at the commutator.
 is located on commutating poles for improving commutation.

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