An induction motor or 3 stage induction motor can be an AC electric motor in which the electric current in the rotor had a need to generate torque is obtained by electromagnetic induction from the magnetic field of the stator winding
An induction engine which connects with a 3-stage Three Phase Motor supply called 3-phase induction motor. Example followers,blowers, cranes,traction .It really is a ac motor. The main drawback of DC motors is the existence of commutator and brushes, which require regular maintenance and we can’t use DC electric motor in explosive and filthy environment. But induction motors are cheaper,tough,lighter,smaller,require less maintenance and can use in dirty and explosive environment. Slip s is the imp element in this type of motor.
There are 2 types of IM.
Squirrel cage IM
Slip ring IM
There are numerous starting and braking condition.
Important starting methods 
are
Star-delta starter
Auto transformer starter
Ac voltage controller starter
Rotor resistance starter
Important braking methods are
Regenerative braking
Plugging or invert voltage braking
Dynamic braking
But one thing quickness control technique of induction engine is important
Pole changing
Stator voltage control
V/f control
Slip power recovery
Rotor resistance control