Stepless speed control of induction motor is possible by which of the – McqOptions

MCQOPTIONS

1.	Stepless speed control of induction motor is possible by which of the followingmethods ?
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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