Answer / meenakshi

u vil be giving 3 phase supply to 3 phase stator winding,a
rotating magnetic field is produced.now rotor is
stationary. i.e, it has not started rotating.only the field
is rotating.now there is flux variation in rotor due to tis
rotating field n hence emf vil be induced in the rotor
bars.becoz of this current vil b flowing in rotor.now main
principle is current carrying conductor placed in a
magnetic field vil experience a torque.n thus rotor
rotates. this much only i kno.

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