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Single Phase Motors

Single Phase Motors
The single phase series motor can operate on

None of the listed here
DC only
Both AC and DC
AC only

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Single Phase Motors
The best suited motor to drive 1/4 HP fan in a hospital ward would be ______ motor.

Capacitor run motor
Single phase series motor
Shaded pole
Hysteresis motor

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Single Phase Motors
For the same rating, a dc series motor costs ______single phase series motor.

Less than
About the same
More than
None of the listed here

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

Scharge motor
Shaded pole motor
Capacitor run motor
Hysteresis motor

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Single Phase Motors
If a DC series motor is operated on AC supply, it will

Have poor efficiency
Have poor power factor
Spark excessively
All of the listed here

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Single Phase Motors
The capacitor start, capacitor run induction motor acts as a true 2-phase motor at _______

All loads
Starting
Full load
No load

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