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Single Phase Motors

Single Phase Motors
The capacitor start, capacitor run motor has _______

Noisy operation
No centrifugal switch
Low efficiency
Low power factor

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Single Phase Motors
A 4-pole , 50 Hz single phase induction motor is running with a slip of 3.4%. The speed of the motor is

1120 rpm
1449 rpm
1279 rpm
1540 rpm

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

Main poles to shaded pole
None of the listed here
Depends on supply line polarity
Shaded pole to main pole

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Single Phase Motors
The washing machine generally employs ______ motor.

Single phase series motor
Resistance split phase
Hysteresis
Shaded pole

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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 not start
the motor will run in reverse direction
the motor will run

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

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

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MORE MCQ ON Single Phase Motors

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