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Synchronous Motors
Synchronous capacitor is
An ordinary static capacitor bank
An over excited synchronous motor driving mechanical load
None of the listed here
An over excited synchronous motor running without mechanical load
An ordinary static capacitor bank
An over excited synchronous motor driving mechanical load
None of the listed here
An over excited synchronous motor running without mechanical load
Answer
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Related Question
Synchronous Motors
The shaft of synchronous motor is made of
Mild steel
Alcino
Chrome steel
Stainless steel
Mild steel
Alcino
Chrome steel
Stainless steel
Answer
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Synchronous Motors
Damper winding in a synchronous motor________
Increases hunting of the motor
Serves to start the motor
Improve pf of the motor
Reduces windage losses
Increases hunting of the motor
Serves to start the motor
Improve pf of the motor
Reduces windage losses
Answer
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Synchronous Motors
If the field of a synchronous motor is underexcited, the power factor will be
lagging
leading
unity
zero
lagging
leading
unity
zero
Answer
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Synchronous Motors
The armature current of a synchronous motor will be minimum for ______ power factor.
0.8 leading
0.8 lagging
None of the listed here
Unity
0.8 leading
0.8 lagging
None of the listed here
Unity
Answer
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Synchronous Motors
A synchronous machine with low value of short-circuit ratio has
lower stability limit
good speed regulation
high stability limit
good voltage regulation
lower stability limit
good speed regulation
high stability limit
good voltage regulation
Answer
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