The AC Induction Motor (ACIM), sometimes called a squirrel cage motor, is one of the most popular motors used in consumer and commercial applications. Induction machines are by much the biggest group of all industrial electrical machines, converting around 70-80% of all electrical energy into mechanical form. The have a very Ac Induction Motora china robust rotor construction, making them ideal for high-speed applications. With proper design, they have good overloading and field weakening features.
The ACIM is 
made up of a simple cage-like rotor and a stator containing three windings
The changing field produced by the AC line current in the stator induces a current in the rotor which interacts with the field and causes the rotor to rotate
The rotor doesn’t have any moving contacts, which eliminates sparking