The rotor of an induction motor runs at__________?
Correct answer: B. below synchronous speed
- A. synchronous speed
- B. below synchronous speed
- C. above synchronous speed
- D. any of the above
Explanation
An induction motor must have positive slip to induce rotor current and produce torque, so its rotor speed remains slightly below synchronous speed. At synchronous speed, the relative motion and induced rotor current would be zero.
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