Electrical Machines
Due to magnetic saturation, the flux per pole in a DC machine without brush shift

  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.
 increases in both the generators and the motors with load.

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Electrical Machines
The compensating winding in a DC machine

 is located on commutating poles for improving commutation.
 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.

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