Which of the following motors is preferred when smooth and precise speed control over a wide range is desired ?
Correct answer: A. D.C. motor
- A. D.C. motor
- B. Squirrel cage induction motor
- C. Wound rotor induction motor
- D. Synchronous motor
Explanation
A DC motor permits smooth and wide-range speed control through armature voltage, field flux, or both. Squirrel-cage and synchronous motors do not normally provide comparable simple speed control.
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