Single-Phase Induction Motors
The single-phase engine Single Phase Induction Motor operates under the same principle as the polyphase engine, except that the rotating magnetic field effect generated by the stator will not exist until running rpm is reached. Since no beginning torque is offered, a design system is included to start the motor. These are the various designations:

Torque-Speed Curves of Different Single-Phase Induction Motors

Shaded-pole: Have only one main winding no begin winding. This configuration causes a change of the applied magnetic field in romantic relationship to the rotor, creating stating torque. Applications consist of supporters and small appliances.

Split-Phase (induction start electric motor)
Has two models of stator windings. The “start” windings sit 90 degrees to the “run” windings and shift the magnetic field of the stator, inducing starting torque. Applications include little grinders, small supporters, and blowers.

Capacitor-Start
The most common single-phase motor found in industrial applications. It is a altered split-phase engine with a capacitor in series with the start winding to supply a start boost. App include small conveyors, huge blowers, pumps, and direct-drives.

Permanent-Split-Capacitor (PSC)
Uses identical main and auxiliary windings with a capacitor to supply starting torque. They are the most reliable single-phase electric motor because no centrifugal starting switch is required. Applications include fans and pumps in HVAC and refrigeration industries.