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Synchronous Motors
Slip rings in a synchronous motor carry
Direct current
Alternating current
All of the listed here
No current
Direct current
Alternating current
All of the listed here
No current
Answer
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Related Question
Synchronous Motors
The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as
pull-up torque
None of these
pull-out torque
pull-in torque
pull-up torque
None of these
pull-out torque
pull-in torque
Answer
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Synchronous Motors
When a synchronous motor is pulled out of synchronism, the stator current ________
Is decreased too much
Is increased too much
Become zero
Remains unchanged
Is decreased too much
Is increased too much
Become zero
Remains unchanged
Answer
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Synchronous Motors
The capacity of a synchronous capacitor is generally in the range of
None of the listed here
kVAR
VAR
MVAR
None of the listed here
kVAR
VAR
MVAR
Answer
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Synchronous Motors
The induced e.m.f. in a synchronous motor working on leading power factor will be
equal to the supply voltage
more than the supply voltage
less than the supply voltage
None of these
equal to the supply voltage
more than the supply voltage
less than the supply voltage
None of these
Answer
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Synchronous Motors
The percentage slip in case of a synchronous motor is
0.01
zero
0.005
1
0.01
zero
0.005
1
Answer
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