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Single Phase Motors
Which of the following applications always have some load whenever switched on?
All of the listed here
Vaccum cleaners
Fan motors
Piston drills
All of the listed here
Vaccum cleaners
Fan motors
Piston drills
Answer
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Related Question
Single Phase Motors
Locked rotor current of a shaded pole motor is
several times the full load current
slightly more than full load current
equal to full load current
less than full load current
several times the full load current
slightly more than full load current
equal to full load current
less than full load current
Answer
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Single Phase Motors
Which of the following single-phase motors has relatively poor starting torque ?
Capacitor motor
Universal motor
All single phase motors have zero starting torque
Repulsion motor
Capacitor motor
Universal motor
All single phase motors have zero starting torque
Repulsion motor
Answer
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Single Phase Motors
For the same rating, the efficiency of a single phase induction motor is _______ that of 3-phase induction motor.
Less than
None of the listed here
The same as
More than
Less than
None of the listed here
The same as
More than
Answer
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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?
Hysteresis
Reluctance
Shaded pole
Universal
Hysteresis
Reluctance
Shaded pole
Universal
Answer
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Single Phase Motors
Which of the following is most economical method of starting a single phase induction motor?
Split phase method
Resistance start method
Capacitor start method
Inductance start method
Split phase method
Resistance start method
Capacitor start method
Inductance start method
Answer
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