Correct option is C
Hollow conductors are used in transmission lines to reduce skin effect. So the answer is (c).
Explanation: The "skin effect" refers to the phenomenon where most of the current in an AC conductor flows near its surface, leaving the inner core carrying very little current. By using a hollow conductor, the unnecessary material in the center is removed, which helps minimize the skin effect and optimize current flow.
Key points about hollow conductors:
·
Reduced weight:
Since only the outer surface is utilized for current flow, hollow conductors use less material compared to solid conductors, thus reducing weight.
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High frequency applications:
This design is particularly beneficial in high-frequency transmission lines where the skin effect is more pronounced.
