Step-less speed control of induction motor is possible by which of th – McqOptions

MCQOPTIONS

1.	Step-less speed control of induction motor is possible by which of the following methods?
A.	e.m.f. injection in rotor eueuit
B.	Changing the number of poles
C.	Cascade operation
D.	None of the above
Answer» C. Cascade operation

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