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.
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