Slip-rings in a synchronous motor carry____________?
Correct answer: A. direct current
- A. direct current
- B. alternating current
- C. no current
- D. all of the above
Explanation
The rotor field winding of a synchronous motor is supplied with direct current through slip rings. Alternating current is applied to the stator, not normally to the rotor field.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electrical Machines
1,061 free Electrical Machines MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electrical Machines questions
The angle between the rotating stator flux and rotor poles is called _________ angle.
An important advantage of a synchronous motor over wound round induction motor is that
The mechanical displacement of the rotor with respect to the stator, in polyphase multipolar synchronous motors running at full load, is of the order of_____________?
A synchronous motor working at leading power factor can be used as____________?
The standard full-load power factor ratings for synchronous motors are___________?
The rotor copper losses, in a synchronous motor, are met by____________?