To reduce the starting current

To increase the speed of motor

To decrease the speed of motor

To maintain proper direction of rotation

Static balancing

Dynamic balancing

Attached with counter balancing

Plugged with lead weight balancing

Eureka

Nichrome

Manganin

Constantine

Differential long shunt

Cumulative long shunt

Differential short shunt

Cumulative short shunt

Directly connected to supply

Connected in series with armature

Connected in parallel with armature

Connected in series with shunt field