Stepless 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:B
Stepless 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