What is an ac motor induction Motor?
An induction motor or asynchronous motor can be an AC electric engine in which the electric current in the rotor needed to create torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
Working Principle of Induction Motor
We need to give double excitation to create a DC motor to rotate. 
In the DC motor, we provide one supply to the stator and another to the rotor through brush set up. But in induction engine, we give only 1 supply, so it is interesting to learn how an induction engine works. It is basic, from the name itself we can understand that here, the induction process is involved. When we give the supply to the stator winding, a magnetic flux gets produced in the stator due to the stream of current in the coil. The rotor winding is so arranged that all coil becomes short-circuited.
The flux from the stator cuts the short-circuited coil in the rotor. As the rotor coils are short-circuited, in accordance to Faraday’s regulation of electromagnetic induction, the existing will start flowing through the coil of the rotor. When the current through the rotor coils flows, another flux gets produced in the rotor. There are two fluxes, one is certainly stator flux, and another is usually rotor flux. The rotor flux will end up being lagging according of the stator flux. Due to that, the rotor will feel a torque which will make the rotor to rotate in direction of the rotating magnetic field. This is actually the working principle of both one and three stage induction motors.
Types of Induction Motors
The types of induction motors can be classified depending on whether they are a solitary phase or three phase induction engine.
Single Phase Induction Motor
The types of single phase induction motors include:
Split Phase Induction Motor
Capacitor Start Induction Motor
Capacitor Start and Capacitor Run Induction Motor
Shaded Pole Induction Motor
Three Phase Induction Motor
The types of three phase induction motors include:
Squirrel Cage Induction Motor
Slip Ring Induction Motor
We have mentioned previously above that the single-phase induction motor is not a self-starting engine, and that the three-phase induction engine is self-starting. So what is a self-starting electric motor?
When the engine starts running automatically with no external force put on the machine, then your motor is referred to as ‘self-starting’. For instance, we see that whenever we put on the change the enthusiast starts to rotate instantly, so it is definitely a self-starting machine. Point to be noted that enthusiast used in home home appliances is an individual phase induction motor which is definitely inherently not self-starting. How? Will a question arise as to how it works? We will discuss it at this point.