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Synchronous Motors
A synchronous motor can be made self starting by providing
None of the listed here
Damper winding on stator as well as rotor poles
Damper winding on stator
Damper winding on rotor poles
None of the listed here
Damper winding on stator as well as rotor poles
Damper winding on stator
Damper winding on rotor poles
Answer
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Related Question
Synchronous Motors
Most of the synchronous motors are _______ power factor metors.
0.8 lagging
0.5 leading
0.8 leading
Unity
0.8 lagging
0.5 leading
0.8 leading
Unity
Answer
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Synchronous Motors
Slip rings in a synchronous motor carry
All of the listed here
Direct current
Alternating current
No current
All of the listed here
Direct current
Alternating current
No current
Answer
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Synchronous Motors
If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then
it runs at a slower speed
it continues to run at the same speed
it runs at a very high speed
the motor stops
it runs at a slower speed
it continues to run at the same speed
it runs at a very high speed
the motor stops
Answer
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Synchronous Motors
Dust and dirt accumulation on motor winding will result in
Eddy current flow
Shorting of coils
Increased core losses
Rise in winding temperature
Eddy current flow
Shorting of coils
Increased core losses
Rise in winding temperature
Answer
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Synchronous Motors
An under excited synchronous motor behaves as_______
A resistor
A capacitor
An inductor
None of the listed here
A resistor
A capacitor
An inductor
None of the listed here
Answer
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