Electrical Machines
In large sized DC machines the compensating windings are provided to

 compensate for the decrease in speed due to increase of load.
 reduce eddy current losses by providing local short circuits.
None of these
  neutralize voltage induced in coil due to fluctuation of l

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Electrical Machines
If two 8-pole dc machines of identical armature sare wound, one with lap winding and the other with wave winding, then

 lap-wound machine will have more rated voltage and more current
 lap-wound machine will have more rated voltage and less current
 wave-wound machine will have more rated voltage and less current
 wave-wound machine will have more rated current and more voltage

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