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Single Phase Motors

Single Phase Motors
Centrifugal switch disconnects the auxiliary winding of the motor at about ____ percent of synchronous speed

100
80 to 90
70 to 80
30 to 40

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

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

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Single Phase Motors
A shaded pole motor can be used for

Circulators
Toys
Hair dryers
Any of the listed here

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Single Phase Motors
Which of the following motors is inherently self starting?

Split motor
Reluctance motor
None of the listed here
Shaded pole motor

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Single Phase Motors
A capacitor-start single phase induction motor is switched on to supply with its capa-citor replaced by an inductor of equivalent reactance value. It will

start and run slowly
start and then stop
not start at all
start and run at rated speed

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Single Phase Motors
Which of the following motors can be used for unity power factor ?

Schrage motor
Capacitor run motor
Hysteresis motor
Shaded pole motor

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MORE MCQ ON Single Phase Motors

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