Both the main winding and auxiliary winding of a single-phase induction motor is placed on the ______?

• A. Rotor
• B. Neither stator nor rotor
• C. Both stator and rotor
• D. Stator

Answer: (D)

A single-phase induction motor with only one winding on the stator cannot produce any starting torque. Hence, some extra arrangement is required to start the motor. In the running condition, the motor is capable of developing the torque with only one winding on the stator.
The simplest method of starting is to provide an auxiliary winding on the stator in addition to the main winding. The two windings are placed in the stator with their axes displaced by 90 electrical degrees in space.