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Synchronous Motors
For reciprocating compressor, the synchronous motor is designed to have pull in torque of about ______ times the full load torque.
0.5
5
6
2
0.5
5
6
2
Answer
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Related Question
Synchronous Motors
The pull out torque of a synchronous motor is generally ______ times its full-load torque.
6 to 9
0.5
5 to 10
1.25 to 3.5
6 to 9
0.5
5 to 10
1.25 to 3.5
Answer
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Synchronous Motors
The capacity of a synchronous capacitor is generally in the range of
VAR
None of the listed here
MVAR
kVAR
VAR
None of the listed here
MVAR
kVAR
Answer
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Synchronous Motors
The duration of sudden short circuit test on synchronous motor is usually about
One minute
One second
None of the listed here
One hour
One minute
One second
None of the listed here
One hour
Answer
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Synchronous Motors
Power factor of a synchronous motor is unity when
The armature current is zero
The armature current is minimum
The armature current is maximum
None of the listed here
The armature current is zero
The armature current is minimum
The armature current is maximum
None of the listed here
Answer
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Synchronous Motors
Hunting in a synchronous motor can not be due to
Variable load
Windage friction
Variable supply frequency
Variable frequency
Variable load
Windage friction
Variable supply frequency
Variable frequency
Answer
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