Which of the following bus-bar schemes has the lowest cost?
Correct answer: B. Single bus-bar scheme
- A. Ring bus-bar scheme
- B. Single bus-bar scheme
- C. Breaker and a half scheme
- D. Main and transfer scheme
Explanation
The single bus-bar scheme has the simplest arrangement with the fewest circuit breakers and isolators, so it has the lowest installation cost. Its disadvantage is lower reliability because a bus fault can interrupt the entire supply.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Power Systems
334 free Power Systems 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 Power Systems questions
Owing to skin effect:
By which of the following methods string efficiency can be improved?
In aluminium conductors, steel core is provided to____________?
In AC.S.R. conductors, the insulation between aluminium and steel conductors is_________?
A conductor, due to sag between two supports, takes the form of____________?
Transmission voltage of 11 kV is normally used for distances up to_____km?