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Frequency of rotor emf in induction motor is around
A same as stator frequency B 50%
C 5 % or below D 30%
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Answer Posted / anas feroz
Rotor emf is induced at slip frequency.
Rated slip ranges from 2% to 5% in normal induction motor's and can be as low as
0.5% in heavy induction motors to reduce the losses.
Hence rotor emf frequency will be s*Fs where
Fs= stator frequency.
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