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Single Phase Motors

Single Phase Motors
The wattage rating for a ceiling fan motor will be in the range

200 to 250 W
10 to 20 W
250 to 500 W
50 to 150 W

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Single Phase Motors
Which of the following statements regarding single-phase induction motoris correct ?

It can rotate in one direction only
It is not self-starting
It requires only one winding
It is self-starting

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Single Phase Motors
A universal motor operates on

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

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Single Phase Motors
The speed/load characteristics of a universal motor is same as that of

None of the listed here
DC series motor
DC shunt motor
AC motor

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Single Phase Motors
The starting winding of a single phase induction motor has ______ that of main winding.

More poles than
Less poles than
Same number of poles as
None of the listed here

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Single Phase Motors
The direction of rotation of universal motor can be reversed the by reversing the flow of current through

Either armature winding or field winding
Armature winding
Field winding
None of these

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