In AC motors, the rotor receives electrical power by Induction exactly the same way as the secondary of a two winding transformer receives its power from the primary. That's why such motors are known as Induction motors.
In fact, an induction motor can be treated as a rotating transformer i.e. one in which primary winding is stationary but secondary is free to rotate. Of all AC motors the poly-phase Induction motor is the one which is extensively used for various kinds of industrial drives.
In fact, an induction motor can be treated as a rotating transformer i.e. one in which primary winding is stationary but secondary is free to rotate. Of all AC motors the poly-phase Induction motor is the one which is extensively used for various kinds of industrial drives.