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Single Phase Motors

Single Phase Motors
Which motor will make least noise?

Hysteresis motor
Capacitor motor
Shaded pole motor
Universal motor

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Single Phase Motors
What could be the size of a universal motor for use in vaccum cleaners?

3/4 HP
2 HP
1/4 HP
1 HP

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

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

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Single Phase Motors
Locked rotor current of a shaded pole motor is

several times the full load current
less than full load current
slightly more than full load current
equal to full load current

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Single Phase Motors
Which of the following motors has highest starting torque ?

Split-phase motor
Repulsion motor
Shaped pole motor
Capacitor-start motor

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Single Phase Motors
If the single phase motor runs hot the probable cause cannot be

Blown fuse
Low voltage
Shorted stator coils
High voltage

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MORE MCQ ON Single Phase Motors

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