The material used for fuse must have_____________?
Correct answer: A. low melting point and high specific resistance
- A. low melting point and high specific resistance
- B. low melting point and -low specific resistance
- C. high melting point and low specific resistance
- D. low melting point and any specific resistance
Explanation
A fuse element should melt at the required fault current, so it needs a low melting point; high resistivity produces greater heating for a given length and current. This combination gives low material volume and effective operation.
Last updated
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.
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.
Related questions
A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become_____________?
A fuse in a motor circuit provides protection against__________?
A fuse is connected_______________?
A fuse is never inserted in____________?
A relay is ___________switch?