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Single Phase Motors

Single Phase Motors
In a hysteresis motor, the rotor must have

None of the listed here
Susceptibility
Resistivity
Retentivity

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Single Phase Motors
A universal motor operates on

Constant load and varying speed
Constant speed and varying load
Synchronous speed with varying load
Approximately constant speed and load

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

High voltage
Low voltage
Shorted stator coils
Blown fuse

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Single Phase Motors
Which motor will make least noise?

Universal motor
Hysteresis motor
Shaded pole motor
Capacitor motor

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Single Phase Motors
The direction of rotation of shaded pole motor depends on ______

Number of poles on the stator
Which half of the pole is shaded
Supply frequency
Supply voltage

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Single Phase Motors
For the same rating, the size of a single phase induction motor is about _______ that of the corresponding 3-phase induction motor.

1.5 times
The same as
3 times
0.33 times

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MORE MCQ ON Single Phase Motors

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