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Single Phase Motors

Single Phase Motors
The washing machine generally employs ______ motor.

Resistance split phase
Hysteresis
Shaded pole
Single phase series motor

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Single Phase Motors
If the capacitor of a single-phase motor is short-circuited

the motor will run in the same direction at reduced r.p.m.
the motor will run
the motor will not start
the motor will run in reverse direction

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Single Phase Motors
A 4 pole, 50 Hz single phase induction motor has a slip of 5% . The speed of the motor will be

1500 rpm
1425 rpm
1200 rpm
None of the listed here

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

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

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Single Phase Motors
If a single phase induction motor runs slower than normal, the most likely defect is

worn bearings
short-circuit in the winding
open-circuit in the winding
None of these

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

Less than
More than
None of the listed here
The same as

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