An electric AC motor is driven gone the abet on taking place of alternating current (AC). The electric AC motor comprises two parts i.e. a stator located external and a rotor located inside. An outside stator has the coils that fabricate the rotating magnetic sports ground. There are various types of electric AC motors such as synchronous AC motors, and induction or asynchronous AC motors. In lawsuit of synchronous motors, the rotor moves precisely along gone than the swiftness of a rotating magnetic arena. However, in an induction or asynchronous motor, the rotor moves at a readiness degrade than the magnetic arena. Generally, the rapidity of the rotor in a motor depends concerning the AC supply frequency and the number of coils. However, the load upon the motor plays a necessary role in deciding the quickness of a rotor. The greater the load, the greater the difference along surrounded by the rotors actual promptness and rotating magnetic pitchs dynamism. Speed of the electric AC motor can be controlled as soon as the serve of a controller or a adjustable-frequency steer. AC controller is the device that controls the electric AC motors speed. The skill conventional by the electric AC motor is converted by the AC controller into a required frequency.