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

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

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Electrical Machines
With the increase in speed of DC motor

  Back emf increase but line current falls.
 Both back emf as well as line current increase.
 Back emf falls and line current increase.
 Both back emf as well as line current fall.

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