ELECTRICAL MACHINES

 Auxiliary winding.

 Compensating winding.

 Commutating pole winding.

 Both Compensating and Commutating pole winding.

 Adding resistance to field circuit.

 Interchanging armature and field connection.

 Reversing armature connection or field connection.

 Reversing supply connection.

 motor will not run.

 it will run in same direction by slowly.

 it will run in opposite direction.

 it will run in same direction.

 both back emf as well as line current increase.

 both back emf as well as line current fall.

 back emf falls and line current increases.

 back emf increases but line current falls.

 start haunting.

 run at very low speed.

 burn.

 run at very high speed.