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Single Phase Induction Motors - Interview Questions and Answers

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41. The repulsion-start induction-run motor is used because of
A. good power factor
B. high efficiency
C. minimum cost
D. high starting torque
Explanation:
42. Which of the following motors is preferred for tape-recorders ?
A. Shaded pole motor
B. Hysteresis motor
C. Two value capacitor motor
D. Universal motor
Explanation:
43. The wattage rating for a ceiling fan motor will be in the range
A. 200 to 250 W
B. 250 to 500 W
C. 50 to 150 W
D. 10 to 20 W
Explanation:
44. Which of the following single-phase induction motors is generally used in time phonographs ?
A. Resistance start
B. Capacitor start capacitor run
C. Shaded pole
D. Universal
Explanation:
45. A schrage motor can run on
A. zero slip
B. negative slip
C. positive slip
D. all of the above
Explanation:
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