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Single Phase Motors
For the same rating , the single phase induction motor is _______ that of 3-phase induction motor.
Less than
The same as
None of the listed here
More than
Less than
The same as
None of the listed here
More than
Answer
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Related Question
Single Phase Motors
In repulsion motor, maximum torque is developed when
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
brush axis is at 45° electrical to the field axis
None of these
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?
Shaded pole
Hysteresis
Reluctance
Universal
Shaded pole
Hysteresis
Reluctance
Universal
Answer
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Single Phase Motors
In split phase motor main winding is of
thin wire placed at the bottom of the slots
thick wire placed at the bottom of the slots
thin wire placed at the top of the slots
thick wire placed at the top of the? slots
thin wire placed at the bottom of the slots
thick wire placed at the bottom of the slots
thin wire placed at the top of the slots
thick wire placed at the top of the? slots
Answer
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Single Phase Motors
If the capacitor of a single-phase motor is short-circuited
the motor will run
the motor will not start
the motor will run in reverse direction
the motor will run in the same direction at reduced r.p.m.
the motor will run
the motor will not start
the motor will run in reverse direction
the motor will run in the same direction at reduced r.p.m.
Answer
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Single Phase Motors
When a universal motor is operated on no load, its speed is limited by
Windage and friction
Weight of the armature
Supply voltage frequency
Armature reaction
Windage and friction
Weight of the armature
Supply voltage frequency
Armature reaction
Answer
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