No-load speed of which of the following motor will be highest ?
Correct answer: B. Series motor
- A. Shunt motor
- B. Series motor
- C. Cumulative compound motor
- D. Differentiate compound motor
Explanation
A series motor has very high no-load speed because its flux becomes small when armature current and series-field current are small. It must not be operated unloaded because this speed can become destructive.
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