A 3-phase induction motor runs at almost 888 rpm at no load and 500 rp – McqOptions

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1.	A 3-phase induction motor runs at almost 888 rpm at no load and 500 rpm at full load when supplied with power from a 50 Hz, 3-phase supply. What is the corresponding speed of the rotor field with respect to the rotor?
A.	388 revolution per minute
B.	400 revolution per minute
C.	644 revolution per minute
D.	534 revolution per minute
Answer» B. 400 revolution per minute

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