Which of the following motors is preferred for tape-recorders ?
Correct answer: B. Hysteresis motor
- A. Shaded pole motor
- B. Hysteresis motor
- C. Two value capacitor motor
- D. Universal motor
Explanation
A hysteresis motor runs smoothly and quietly at nearly constant speed, making it suitable for tape recorders and other timing applications. Shaded-pole motors are cheaper but have poorer speed regulation and torque characteristics.
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