The surge resistance of cable is__________?
Correct answer: C. 50 ohms
- A. 5 ohms
- B. 20 ohms
- C. 50 ohms
- D. 100 ohms
Explanation
The surge impedance of a power cable is low compared with that of an overhead line because the cable has high capacitance and low inductance. A commonly used approximate value is 50 ohms.
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?