A fuse in a motor circuit provides protection against__________?
Correct answer: B. short-circuit and overload
- A. overload
- B. short-circuit and overload
- C. open circuit, short-circuit and overload
- D. none of the above
Explanation
A fuse opens the motor circuit when excessive current flows, covering short-circuit current and sufficiently sustained overload current. In practical motor installations, a separate overload relay is commonly added because fuses are mainly relied on for short-circuit protection.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Wiring, Installation and Safety
115 free Wiring, Installation and Safety 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 Wiring, Installation and Safety questions
Oil switches are employed for_____________?
Protection by fuses is generally not used beyond__________?
An isolator is installed_____________?
On which of the following effects of electric current a fuse operates ?
The fuse rating is expressed in terms of_____________?
The material used for fuse must have_____________?