EE MCQ
EE MCQ
Home
Quiz
Contact Us
Synchronous Motors
Damper winding in a synchronous motor________
Improve pf of the motor
Reduces windage losses
Serves to start the motor
Increases hunting of the motor
Improve pf of the motor
Reduces windage losses
Serves to start the motor
Increases hunting of the motor
Answer
Download EE MCQ app
Related Question
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
Download EE MCQ app
Synchronous Motors
A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have
leading power factor with over-excitation
lagging power factor with over-excitation
no change of power factor
leading power factor with under-excitation
leading power factor with over-excitation
lagging power factor with over-excitation
no change of power factor
leading power factor with under-excitation
Answer
Download EE MCQ app
Synchronous Motors
Change of D.C. excitation of a synchronous motor changes
Any of the above
Power factor of power drawn by the motor
Motor speed
Applied voltage of the motor
Any of the above
Power factor of power drawn by the motor
Motor speed
Applied voltage of the motor
Answer
Download EE MCQ app
Synchronous Motors
Synchronous capacitor is
An over excited synchronous motor running without mechanical load
An ordinary static capacitor bank
None of the listed here
An over excited synchronous motor driving mechanical load
An over excited synchronous motor running without mechanical load
An ordinary static capacitor bank
None of the listed here
An over excited synchronous motor driving mechanical load
Answer
Download EE MCQ app
Synchronous Motors
A synchronous machine with large air gap has
a higher synchronizing power which makes the machine less sensitive to load variations
a small value of inherent regulation
a higher value of stability limit
all of the listed here
a higher synchronizing power which makes the machine less sensitive to load variations
a small value of inherent regulation
a higher value of stability limit
all of the listed here
Answer
Download EE MCQ app
Search
Login here
Google
Download our application
Android
Apple
Follow Us
Facebook
Telegram
Instagram