Which of the following motors is most suitable for signalling devices and many kinds of timers ?
Correct answer: D. Reluctance motor
- A. D.C. shunt motor
- B. D.C. series motor
- C. Induction motor
- D. Reluctance motor
Explanation
Reluctance motors provide nearly constant-speed operation and are commonly used in clocks, timers, signalling devices and other small mechanisms. Shunt and series motors are selected mainly for their voltage or torque characteristics, not timing duties.
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