ELECTRICAL MACHINES

 Auxiliary winding.

 Commutating pole winding.

 Both Compensating and Commutating pole winding.

 Compensating winding.

 Interchanging armature and field connection.

 Reversing armature connection or field connection.

 Adding resistance to field circuit.

 Reversing supply connection.

 it will run in opposite direction.

 it will run in same direction.

 motor will not run.

 it will run in same direction by slowly.

 back emf increases but line current falls.

 both back emf as well as line current fall.

 both back emf as well as line current increase.

 back emf falls and line current increases.

 run at very low speed.

 burn.

 run at very high speed.

 start haunting.