The injected e.m.f. in the rotor of induction motor must have_________ – McqOptions

MCQOPTIONS

1.	The injected e.m.f. in the rotor of induction motor must have__________?
A.	zero frequency
B.	the same frequency as the slip frequency
C.	the same phase as the rotor e.m.f.
D.	high value for the satisfactory speed control
Answer» C. the same phase as the rotor e.m.f.

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