Electrical Machines
In a seperately excited DC Motor if field current is increased, it will

 Reduce armature heating.
 Reduce starting torque.
 Increase acceleration duration.
 Increase speed

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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

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

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