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Synchronous Motors
The armature current of the synchronous motor has higher values for
Low excitation only
None of the listed here
Higher excitation only
Both higher and low excitation
Low excitation only
None of the listed here
Higher excitation only
Both higher and low excitation
Answer
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Related Question
Synchronous Motors
Change of D.C. excitation of a synchronous motor changes
Any of the above
Motor speed
Applied voltage of the motor
Power factor of power drawn by the motor
Any of the above
Motor speed
Applied voltage of the motor
Power factor of power drawn by the motor
Answer
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Synchronous Motors
The net armature voltage of a synchronous motor is equal to the
vector difference of Eh and V
arithmetic difference of Eb and V
arithmetic sum of Eb and V
vector sum of Eb and V
vector difference of Eh and V
arithmetic difference of Eb and V
arithmetic sum of Eb and V
vector sum of Eb and V
Answer
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Synchronous Motors
Slip rings in a synchronous motor carry
No current
Direct current
Alternating current
All of the listed here
No current
Direct current
Alternating current
All of the listed here
Answer
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Synchronous Motors
When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____
None of the listed here
Zero
Maximum
minimum
None of the listed here
Zero
Maximum
minimum
Answer
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Synchronous Motors
While running, a synchronous motor is compelled to run at synchronous speed because of _______
Induced emf in rotor field winding by stator flux
Compulsion due to lenz's law
Damper winding in its pole faces
Magnetic locking between stator and rotor poles
Induced emf in rotor field winding by stator flux
Compulsion due to lenz's law
Damper winding in its pole faces
Magnetic locking between stator and rotor poles
Answer
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