Which of the following statements regarding hysteresis motor is in incorrect?
Correct answer: A. It is extremely sensitive to fluctuations in supply voltage
- A. It is extremely sensitive to fluctuations in supply voltage
- B. Its high starting torque is due to its high rotor hysteresis loss
- C. It is extremely quiet in operation
- D. It accelerates from rest to full-speed almost instantaneously
Explanation
A hysteresis motor is relatively insensitive to supply-voltage fluctuations, while its hysteresis torque gives smooth and rapid acceleration and quiet operation. Hence the statement about extreme voltage sensitivity is incorrect.
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