Question

A induction motor is a commonly used electrical machine what example of it is uses are given here

Answer 1

An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.[1] An induction motor can therefore be made without electrical connections to the rotor.[a] An induction motor's rotor can be either wound type or squirrel-cage type.

Answer 2

Answer:

Almost 90% of electrical motors being used are Induction motors. The reasons are .

1.All other permanent magnet, stepper, universal motors are not available for such big earrings due to the limitations in their design.

2. Slip ring type motors are carrying slip rings thus prone to adequate maintenance. Also the coils in rotor and stator calls for increased cost. Induction motors are free from all these. The interesting  thing is we can feed electrical input with just 3 wires.

3. Induction motors are rugged in construction and easier for maintenance.

4. The advancement in power electronics made speed variations and breaking possible for induction motors. We are no longer depends on the inefficient eddy current drives or mechanical clutches for varying speed. Constant torque, speed applications can be carried out with closed loop systems efficiently.

5. It can be manufactured for big ratings, without M i c h head ache for mechanical designers.