EE MCQ
EE MCQ
Home
Quiz
Contact Us
Synchronous Motors
The pull out torque of a practical synchronous motor will occur when the torque angle is about _____
30°
75°
45°
0°
30°
75°
45°
0°
Answer
Download EE MCQ app
Related Question
Synchronous Motors
A synchronous motor can develop synchronous torque
only at synchronous speed
while over-excited
below or above synchronous speed
when under loaded
only at synchronous speed
while over-excited
below or above synchronous speed
when under loaded
Answer
Download EE MCQ app
Synchronous Motors
A synchronous motor with large air gap has
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
A higher synchronizing power which makes the machine less sensitive to load variations
A small value of inherent regulation
All of the listed here
Answer
Download EE MCQ app
Synchronous Motors
If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then
the motor stops
it continues to run at the same speed
it runs at a very high speed
it runs at a slower speed
the motor stops
it continues to run at the same speed
it runs at a very high speed
it runs at a slower speed
Answer
Download EE MCQ app
Synchronous Motors
The magnitude of field flux in a 3-phase synchronous motor
Varies with the load
Remains constant at all loads
Varies with speed
Varies with power factor
Varies with the load
Remains constant at all loads
Varies with speed
Varies with power factor
Answer
Download EE MCQ app
Synchronous Motors
A synchronous motor runs at only one speed because it ______
Is a doubly fed machine
Has a damper winding
Has no losses
None of the listed here
Is a doubly fed machine
Has a damper winding
Has no losses
None of the listed here
Answer
Download EE MCQ app
Search
Login here
Google
Download our application
Android
Apple
Follow Us
Facebook
Telegram
Instagram