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Single Phase Induction Motors - Interview Questions and Answers

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71. Which of the following motor will have relatively higher power factor ?
A. Capacitor run motor
B. Shaded pole motor
C. Capacitor start motor
D. Split phase motor
Explanation:
72. In split phase motor main winding is of
A. thin wire placed at the top of the slots
B. thin wire placed at the bottom of the slots
C. thick wire placed at the bottom of the slots
D. thick wire placed at the top of the" slots
Explanation:
73. The electric motor used in portable drills is
A. capacitor run motor
B. hysteresis motor
C. universal motor
D. repulsion motor
Explanation:
74. The purpose of stator winding in the compensated repulsion motor is to
A. provide mechanical balance
B. improve power factor and provide better speed regulation
C. prevent hunting in the motor
D. eliminate armature reaction
Explanation:
75. The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it
A. improves the efficiency
B. helps the rotor teeth to remain under the stator teeth
C. helps in reducing the tendency of the rotor teeth to remain under the stator teeth
D. improves the power factor
Explanation:
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