defective or leaky capacitor

open in regulator resistor / switch

worn out bearing and absence of grease

low applied voltage

series to the starting winding

parallel to the starting winding

series to the main winding

parallel to the main winding

blowers

electric traction

robotics

servo motor

shaded pole motor

universal motor

capacitor start motor

capacitor run motor

Induction start - Induction run motor

Resistance start - Induction run motor

Permanent capacitor motors

Shaded pole motor