ELECTRICAL MACHINES

 increases in both the generators and the motors with load.

  decreases in both generators and the motors with load.

 decreases in generators and increases in motor with load.

 increases in generators but decreases in motor with load.

 about 100 V.

  very small, say about 2 or 3 V.

  250 V.

  zero.

 failure of insulation between two commutator bars.

  any of above.

  failure of insulation between two turns of coil.

  grounding of two or more turns of the same coil.

 increases.

  decreases.

  increases upto a limit and then remains almost constant.

  remains constant.

  is located on pole shoes for avoiding the flashover at the commutator.

  is located on pole shoes to avoid the sparking at the brushes.

 is located on commutating poles for improving commutation.

 is located in armature slots for compensation of the armature reaction.