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Synchronous Motors
An over excited synchronous motor behaves as _____
An inductor
None of the listed here
A resistor
A capacitor
An inductor
None of the listed here
A resistor
A capacitor
Answer
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Related Question
Synchronous Motors
A synchronous machine with low value of short-circuit ratio has
good voltage regulation
lower stability limit
good speed regulation
high stability limit
good voltage regulation
lower stability limit
good speed regulation
high stability limit
Answer
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Synchronous Motors
The pull out torque of a synchronous motor is generally ______ times its full-load torque.
5 to 10
1.25 to 3.5
0.5
6 to 9
5 to 10
1.25 to 3.5
0.5
6 to 9
Answer
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Synchronous Motors
When a synchronous motor is pulled out of synchronism, the stator current ________
Is increased too much
Is decreased too much
Remains unchanged
Become zero
Is increased too much
Is decreased too much
Remains unchanged
Become zero
Answer
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Synchronous Motors
An under excited synchronous motor behaves as_______
A capacitor
An inductor
None of the listed here
A resistor
A capacitor
An inductor
None of the listed here
A resistor
Answer
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Synchronous Motors
The rotor copper losses, in a synchronous motor, are met by
motor input
supply lines
c. source
armature input
motor input
supply lines
c. source
armature input
Answer
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