The number of brushes in a commutator depends on______________?
Correct answer: D. amount of current to be collected
- A. speed of armature
- B. type of winding
- C. voltage
- D. amount of current to be collected
Explanation
The number of brushes is selected mainly according to the armature current that must be collected, since multiple brushes reduce current per brush and current density. Speed, voltage and winding type do not primarily determine the number of brushes.
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 following constitute short-circuit in the armature winding.
Compensating windings are used in D.C. generators______________?
Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?
Magnetic field in a D.C. generator is produced by_______________?
To avoid formation of grooves in the commutator of a D.C. machine?
The demagnetising component of armature reaction in a D.C. generator___________?