Which one of the following is not the function of pole shoes in a D.C. machine ?
Correct answer: A. To reduce eddy current loss
- A. To reduce eddy current loss
- B. To support the field coils
- C. To spread out flux for better uniformity
- D. To reduce the reluctance of the magnetic path
Explanation
Pole shoes support the field coils, spread the flux over the armature, and reduce magnetic reluctance. Reducing eddy-current loss is not their normal function, so option a is the exception.
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 mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is______________?
For which of the following applications a D.C. motor is preferred over an A.C. motor ?
In D.C. machines the residual magnetism is of the order of_________________?
If the supply voltage for a D.C. motor is increased, which of the following will decrease ?
Which of the following motor is preferred for operation in highly explosive atmosphere ?
Sparking at the commutator of a D.C. motor may result in____________?