3.8 An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50 Hz, the emf in the rotor will have a frequency of (a) 1.5 Hz (c) 51.5 Hz (b) 48.5 Hz (d) 75 Hz
3.8 An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50 Hz, the emf in the rotor will have a frequency of (a) 1.5 Hz (c) 51.5 Hz (b) 48.5 Hz (d) 75 Hz
Chapter39: Synchronous Motor Operation
Section: Chapter Questions
Problem 11SQ: Varying the DC voltage to the rotor field changes the a. motor speed. b. power factor. c. phase...
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Transcribed Image Text:3.8 An induction motor having 8 poles runs at
727.5 rpm. If the supply frequency is 50 Hz, the
emf in the rotor will have a frequency of
(a) 1.5 Hz
(b) 48.5 Hz
(c) 51.5 Hz
(d) 75 Hz
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