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

Field control method

Armature control method

Tapped field speed control

Ward Leonard speed control

Incorrect brush position

Incorrect field connection

Incorrect direction of rotation

Incorrect armature connection