The frequency of induced electromotive force (EMF) in rotor of a thre – McqOptions

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1.	The frequency of induced electromotive force (EMF) in rotor of a three-phase 5 kW, 400 V, 5 Hz, 4 pole induction motor is 25 Hz. If the motor is supplied with 400 V, 50 Hz in alternating current source, what will be its speed of rotation?
A.	750 rpm
B.	1500 rpm
C.	1000 rpm
D.	1450 rpm
Answer» B. 1500 rpm

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