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Single Phase Induction Motors - Interview Questions and Answers

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26. In case of high speed universal motor which of the following needs more attention ?
A. End play
B. Air gap
C. Insulation in rotor
D. Balancing of rotor
Explanation:
27. Which of the following motors is used in mixies ?
A. Repulsion motor
B. Reluctance motor
C. Hysteresis motor
D. Universal motor
Explanation:
28. In case of a shaded pole motor the direction of rotation of the motor is
A. from main pole to shaded pole
B. from shaded pole to main pole
C. either of the above depending on voltage
D. either of the above depending on power factor
Explanation:
29. In A.C. series motor compensating winding is employed to
A. reduce the effects of armature reaction
B. increase the torque
C. reduce sparking at the brushes
D. none of the above
Explanation:
30. In a two value capacitor motor, the capacitor used for running purposes is
A. air capacitor
B. paper spaced oilfilled type
C. ceramic type
D. a.c. electrolytic type
Explanation:
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