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Single Phase Induction Motors - Interview Questions and Answers

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31. Which type of load is offered by cranes and hoists ?
A. Gradually varying load
B. Non-reversing, no-load start
C. Reversing, light start
D. Reversing, heavy start
Explanation:
32. Which of the following motors has highest starting torque ?
A. Repulsion motor
B. Shaped pole motor
C. Capacitor-start motor
D. Split-phase motor
Explanation:
33. Which of the following single-phase motors has relatively poor starting torque ?
A. Universal motor
B. Repulsion motor
C. Capacitor motor
D. All single phase motors have zero starting torque
Explanation:
34. The wattage of motor for driving domestic sewing machine will be around
A. 100 to 150 W
B. 40 to 75 W
C. 10 to 30 W
D. 5 to 10 W
Explanation:
35. Single phase induction motor usually operates on
A. 0.6 power factor lagging
B. 0.8 power factor lagging
C. 0.8 power factor leading
D. unity power factor
Explanation:
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