Electrical Machines
In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________.

 increased.
 decreased.
  remains unchanged.
 kept constant to certain value.

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Electrical Machines
The compensating winding in a DC machine

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

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