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Synchronous Motors
The angle between the rotor poles and stator poles, in a synchronous motor, is known as
Power factor angle
Synchronising angle
Angle of retardation
Torque angle
Power factor angle
Synchronising angle
Angle of retardation
Torque angle
Answer
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Related Question
Synchronous Motors
The rotor copper losses, in a synchronous motor, are met by
supply lines
motor input
armature input
c. source
supply lines
motor input
armature input
c. source
Answer
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Synchronous Motors
In a synchronous motor, the maximum power developed depends on all of the following except
rotor excitation
maximum value of coupling angle
supply voltage
direction of rotation
rotor excitation
maximum value of coupling angle
supply voltage
direction of rotation
Answer
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Synchronous Motors
A synchronous motor can be made self starting by providing
Damper winding on stator
None of the listed here
Damper winding on stator as well as rotor poles
Damper winding on rotor poles
Damper winding on stator
None of the listed here
Damper winding on stator as well as rotor poles
Damper winding on rotor poles
Answer
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Synchronous Motors
The minimum armature current of the synchronous motor corresponds to operation at
0.707 power factor leading
unity power factor
zero power factor leading
0.707 power factor lagging
0.707 power factor leading
unity power factor
zero power factor leading
0.707 power factor lagging
Answer
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Synchronous Motors
The power factor of a synchronous motor is better than that of induction motor because
mechanical load on the motor can be adjusted
synchronous motor has large air gap
synchronous motor runs at synchronous speed
stator supply is relieved of responsibility of producing magnetic field
mechanical load on the motor can be adjusted
synchronous motor has large air gap
synchronous motor runs at synchronous speed
stator supply is relieved of responsibility of producing magnetic field
Answer
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