A 3 phase induction motor runs at almost 1000 rpm at no load and 950 r – McqOptions

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1.	A 3 phase induction motor runs at almost 1000 rpm at no load and 950 rpm at full load when supplied with power from a 50 Hz 3 phase line. The frequency of rotor voltage is:
A.	2 Hz
B.	2.5 Hz
C.	250 Hz
D.	2.25 Hz
Answer» C. 250 Hz

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