Electrical Machines
In a DC Motor 3 point starter is used to

 provide protection against Low-Voltage.
 provide overload protection.
 all of above.
 limit the starting current to a safer value.

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

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