Electrical Machines
In case of IM the torque is

  directly proportional to slip.
  directly proportional to slip2.
  inversely proportional to √slip.
  inversely proportional to slip.

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Electrical Machines
The compensating winding in a DC machine

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

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