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Synchronous Motors
A synchronous motor with large air gap has
A higher synchronizing power which makes the machine less sensitive to load variations
A small value of inherent regulation
All of the listed here
A higher value of stability limit
A higher synchronizing power which makes the machine less sensitive to load variations
A small value of inherent regulation
All of the listed here
A higher value of stability limit
Answer
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Related Question
Synchronous Motors
The operating speed of a synchronous motor can be changed to new fixed value by
changing the load
changing frequency
changing the supply voltage
using brakes
changing the load
changing frequency
changing the supply voltage
using brakes
Answer
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Synchronous Motors
For the same active power consumed, the stator current of a synchronous motor is ______ that of a 3 phase induction motor.
The same as
More than
Less than
None of the listed here
The same as
More than
Less than
None of the listed here
Answer
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Synchronous Motors
The back e.m.f. of a synchronous motor depends on
All of these
load angle
load
speed
All of these
load angle
load
speed
Answer
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Synchronous Motors
A synchronous motor can be started by
Dc compound motor
All of the listed here
Pony motor
Provinding damper winding
Dc compound motor
All of the listed here
Pony motor
Provinding damper winding
Answer
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Synchronous Motors
The direction of rotation of a synchronous motor can be reversed by reversing,
Supply phase sequence
Polarity of rotor poles
Current to field winding
None of the listed here
Supply phase sequence
Polarity of rotor poles
Current to field winding
None of the listed here
Answer
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