Question

prove that when a three phase inductor motor is supplied with a three phase supply a a rotating magnetic field is generated in the airgap​

Answer 1

Answer:

Direction of Rotating Magnetic Field

 

The direction of rotating magnetic field depends upon the phase sequence of the AC supply connected across the stator winding. If we interchange any two phases of the AC supply, we will get new phase sequence, then the direction of rotating magnetic field in three phase induction motor will reverse. It will start rotating in reverse direction and so does the rotor.

 

Since a stator and its winding of three phase induction motor is the same as that of a synchronous motor. So all above discussion about RMF in induction motor is the same for RMF in synchronous motor also.