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Industrial Drives - Interview Questions and Answers

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51. Which of the following types of motor enclosure is safest ?
A. Totally enclosed
B. Totally enclosed fan cooled
C. Open type
D. Semi closed
Explanation:
52. Which of the following motors has series characteristics ?
A. Shaded pole motor
B. Repulsion motor
C. Capacitor start motor
D. None of the above
Explanation:
53. While selecting motor for an air conditioner which of the following characteristics is of great importance ?
A. Type of bearings
B. Type of enclosure
C. Noise
D. Arrangement for power transmis�sion
Explanation:
54. Light duty cranes are used in which of the following ?
A. Power houses
B. Pumping stations
C. Automobile workshops
D. All of the above
Explanation:
55. The starting torque in case of centrifugal pumps is generally
A. less than running torque
B. same as running torque
C. slightly more than running torque
D. double the running torque
Explanation:
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