Field diverter method

Tapped field method

Voltage control method

Armature diverter method

Motor stopped

Runs at slow speed

Runs at very high speed

Runs at reverse direction

Increases the starting torque

Protects from armature reaction

Protects armature from over loading

Reduces the spark in the commutator segment

Absence of back emf

Load current flows through field winding

Armature current and field current are same

Series field winding wound with thick wire

To reduce the starting current

To increase the speed of motor

To decrease the speed of motor

To maintain proper direction of rotation