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Synchronous Motors
A synchronous motor is a ______ motor.
Variable speed
Singly fed
Variable pf
None of the listed here
Variable speed
Singly fed
Variable pf
None of the listed here
Answer
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Related Question
Synchronous Motors
For the same active power consumed, the stator current of a synchronous motor is ______ that of a 3 phase induction motor.
Less than
More than
The same as
None of the listed here
Less than
More than
The same as
None of the listed here
Answer
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Synchronous Motors
A synchronous machine with low value of short-circuit ratio has
good voltage regulation
good speed regulation
high stability limit
lower stability limit
good voltage regulation
good speed regulation
high stability limit
lower stability limit
Answer
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Synchronous Motors
In a synchronous motor, the maximum power developed depends on all of the following except
direction of rotation
rotor excitation
supply voltage
maximum value of coupling angle
direction of rotation
rotor excitation
supply voltage
maximum value of coupling angle
Answer
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Synchronous Motors
Which of the following motors is non self starting?
Dc series motor
Synchronous motor
Wound rotor induction motor
Squirrel cage induction motor
Dc series motor
Synchronous motor
Wound rotor induction motor
Squirrel cage induction motor
Answer
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Synchronous Motors
A synchronous motor runs at only one speed because it ______
None of the listed here
Has a damper winding
Has no losses
Is a doubly fed machine
None of the listed here
Has a damper winding
Has no losses
Is a doubly fed machine
Answer
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