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Single Phase Motors
For the same rating, a dc series motor costs ______single phase series motor.
None of the listed here
About the same
More than
Less than
None of the listed here
About the same
More than
Less than
Answer
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Related Question
Single Phase Motors
Which of the following statements regarding a reluctance motor is incorrect ?
Its squirrel cage-rotor is of unsym-metrical magnetic construction in order to vary reluc-tance path between stator and rotor
It is nothing else but a single-phase, salient pole synchronous-induction motor
It cannot be reversed, ordinarily
It requires no D.C. field excitation for its operation
Its squirrel cage-rotor is of unsym-metrical magnetic construction in order to vary reluc-tance path between stator and rotor
It is nothing else but a single-phase, salient pole synchronous-induction motor
It cannot be reversed, ordinarily
It requires no D.C. field excitation for its operation
Answer
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Single Phase Motors
Which of the following applications would need the smallest size of motor?
Electric clock
Table fan
Domestic mixi
Sewing machine
Electric clock
Table fan
Domestic mixi
Sewing machine
Answer
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Single Phase Motors
Which of the following motors is generally used for elctric shavers?
Hysteresis motor
Reluctance motor
Universal motor
Shaded pole motor
Hysteresis motor
Reluctance motor
Universal motor
Shaded pole motor
Answer
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Single Phase Motors
In repulsion motor, maximum torque is developed when
brush axis is at 45° electrical to the field axis
None of these
brush axis coincides with the field axis
brush axis is at 90° electrical to the field axis
brush axis is at 45° electrical to the field axis
None of these
brush axis coincides with the field axis
brush axis is at 90° electrical to the field axis
Answer
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Single Phase Motors
Which of the following motors can be used for unity power factor ?
Hysteresis motor
Capacitor run motor
Shaded pole motor
Schrage motor
Hysteresis motor
Capacitor run motor
Shaded pole motor
Schrage motor
Answer
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