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Synchronous Motors
Synchronous motor always run at
More than synchronous speed
The synchronous speed
Less than synchronous speed
None of the listed here
More than synchronous speed
The synchronous speed
Less than synchronous speed
None of the listed here
Answer
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Related Question
Synchronous Motors
The induced e.m.f. in a synchronous motor working on leading power factor will be
more than the supply voltage
equal to the supply voltage
less than the supply voltage
None of these
more than the supply voltage
equal to the supply voltage
less than the supply voltage
None of these
Answer
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Synchronous Motors
An over excited synchronous motor is used for
Low torque loads
Variable speed loads
Fluctuating loads
Power factor corrections
Low torque loads
Variable speed loads
Fluctuating loads
Power factor corrections
Answer
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Synchronous Motors
Hunting in a synchronous motor can not be due to
Variable frequency
Variable load
Variable supply frequency
Windage friction
Variable frequency
Variable load
Variable supply frequency
Windage friction
Answer
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Synchronous Motors
When the synchronous motor is pulled out of synchronism, the stator current _______
Is decreased too much
Becomes zero
Remains unchanged
Is increased too much
Is decreased too much
Becomes zero
Remains unchanged
Is increased too much
Answer
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Synchronous Motors
When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____
Zero
minimum
None of the listed here
Maximum
Zero
minimum
None of the listed here
Maximum
Answer
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