Answer Posted / vinova

The rotor will run in the opposite direction of rotating
magnatic field of rotor because the induced current in the
stator set up stator rotating magnatic feld now due to
intraction of these two magnatic fields the rotor start
rotating in the opposite direction of rotor magnatic field
so that frequency of stator current become sf (slip* rotor
fed frequency)the interesting point here is that speed of
rotation of stator magnatic field will be very low (rotor
magnatic field- rotor speed). and the resultant magnatic
field will also rotate at very low speed in the space as
copaired to it happen when the stator is fed electrical
supply and rotor is short circuited

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