As the energy requirements of single load systems are often small, all our homes, offices are supplied with a single-phase A.C. supply only. To get appropriate working circumstances using this single-phase supply, compatible motors have to be used. Besides becoming compatible, the motors need to be economical, dependable and easy to repair. One can find most of these characteristics in one phase induction motor readily. Single Phase Ac Motor Similar to three-stage motors but with some modifications, single-phase induction motors are a great choice for domestic appliances. Their simple design and low cost have attracted many applications.
Single-phase induction motors are the basic motors which are powered by single -stage A.C. and where torque 
is produced because of induction of electricity due to the alternating magnetic fields