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Single Phase Motors

Single Phase Motors
In a shaded pole motor the rotating magnetic field is produced by using

A capacitor
Shading coils
Salient poles
Copper windings

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Single Phase Motors
Which motor will make least noise?

Capacitor motor
Universal motor
Hysteresis motor
Shaded pole motor

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Single Phase Motors
Locked rotor current of a shaded pole motor is

several times the full load current
equal to full load current
less than full load current
slightly more than full load current

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Single Phase Motors
The resistance split phase induction motor is used in those application where ______

Starting is infrequent
None of the listed here
Starting period is long
Starting is frequent

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Single Phase Motors
In a capacitor start motor, the phase displacement between starting and running winding can be nearly

90°
30°
10°
60°

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

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

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