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Single Phase Motors

Single Phase Motors
Torque developed by a single phase induction motor at starting is

Pulsating
Uniform
Nil
None of the listed here

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Single Phase Motors
In case of a shaded pole motor the direction of rotation of the motor is

from main pole to shaded pole
either of the above depending on power factor
from shaded pole to main pole
either of the above depending on voltage

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Single Phase Motors
At starting, the line current of a capacitor start induction motor is ______ the normal full load current.

8 to 10 times
Equal to
7 to 8 times
4 to 5 times

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Single Phase Motors
A vaccum cleaner employs _______motor.

Capacitor start
Shaded pole motor
Resistance split phase
Single phase series motor

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Single Phase Motors
Which of the following motors is used for unity power factor ?

Schrage motor
Universal motor
Hysteresis motor
Reluctance motor

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Single Phase Motors
Which of the following single-phase motors has relatively poor starting torque ?

Universal motor
All single phase motors have zero starting torque
Capacitor motor
Repulsion motor

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