For which motor the speed can be controlled from rotor side ?
Correct answer: B. Slip-ring induction motor
- A. Squirrel-cage induction motor
- B. Slip-ring induction motor
- C. Both A. and (b)
- D. None of the above
Explanation
Rotor-side speed control is possible in a slip-ring motor because external resistance or injected voltage can be connected through its slip rings. A squirrel-cage rotor has no accessible external rotor circuit.
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