Q&A about ac motors and induction motors
What is single phase AC motor?
Single phase induction motor is an AC engine were electrical energy is changed into mechanical energy to perform some physical task. This induction engine requires only one power phase for his or her proper operation. They are commonly used in low power applications, in household and industrial use.
How really does an AC motor function single phase?
The stator of an individual phase induction electric motor is wound with single phase winding. When the stator can be fed with a single phase supply, it generates alternating flux (which alternates along one space axis only). Alternating flux acting on a squirrel cage rotor can not produce rotation, just revolving flux can.
Can an individual phase motor run with out a capacitor?
Single-phase induction motors aren’t self-starting without an auxiliary stator winding driven by an away of phase current of near 90°. Once started the auxiliary winding can be optional. The auxiliary winding of a long lasting split capacitor motor has a capacitor in series with it during beginning and running.
How can you reverse a single phase motor?
Once started, a single phase induction motor will certainly happily run in possibly direction. To invert 
it, we need to change the path of the rotating magnetic field produced by the main and starter windings. Which is achieved by reversing the polarity of the starter winding.