Overhead system can be designed for operation up to____________?
Correct answer: D. 400 kV
- A. 11 kV
- B. 33 kV
- C. 66 kV
- D. 400 kV
Explanation
Overhead lines are suitable for very high voltages because air provides insulation at comparatively low cost and the conductors can be spaced apart. In the conventional range used in this question, overhead systems can operate up to about 400 kV.
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