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Single Phase Motors

Single Phase Motors
The full load efficiency of a shaded pole motor is about _______

30 to 35%
60 to 70%
70 to 80%
5 to 10%

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Single Phase Motors
A motor gets overheated due to

Dry bearings
Worn bearings
Overloads
All of the listed here

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Single Phase Motors
Which of the following single phase motor is available with speed as low as one revolution per month?

Universal
Hysteresis
Shaded pole
Reluctance

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Single Phase Motors
Which of the following motors is used in mixies ?

Hysteresis motor
Repulsion motor
Reluctance motor
Universal motor

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Single Phase Motors
Torque developed by a single phase induction motor at starting is

None of the listed here
Uniform
Nil
Pulsating

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Single Phase Motors
If starting winding of a single-phase induction motor is left in the circuit, it will

run faster
spark at light loads
run slower
draw excessive current and overheat

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