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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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Related Question
Single Phase Motors
Burning out of winding is due to
None of these
short circuited capacitor
open circuiting of capacitor
capacitor value hiving changed
None of these
short circuited capacitor
open circuiting of capacitor
capacitor value hiving changed
Answer
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Single Phase Motors
Hysteresis motor is particularly useful for high-quality record players and tape-recorders because
it develops hysteresis torque which is extremely steady both in amplitude and phase
it revolves synchronously
it is not subject to any magnetic or mechanical vibrations
it can be easily manufactured in extremely small sizes of up to 1 W output
it develops hysteresis torque which is extremely steady both in amplitude and phase
it revolves synchronously
it is not subject to any magnetic or mechanical vibrations
it can be easily manufactured in extremely small sizes of up to 1 W output
Answer
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Single Phase Motors
In a repulsion motor, brushes are connected
To starting winding
To stator winding
Together by a jumper wire
To the external supply
To starting winding
To stator winding
Together by a jumper wire
To the external supply
Answer
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Single Phase Motors
In split phase motor main winding is of
thick wire placed at the bottom of the slots
thick wire placed at the top of the? slots
thin 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
thick wire placed at the top of the? slots
thin wire placed at the top of the slots
thin wire placed at the bottom of the slots
Answer
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Single Phase Motors
A 4 pole, 50 Hz single phase induction motor has a slip of 5% . The speed of the motor will be
1500 rpm
1425 rpm
1200 rpm
None of the listed here
1500 rpm
1425 rpm
1200 rpm
None of the listed here
Answer
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