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What are the disadvantages of underground cable in-comparison of over head transmission line?

What are the disadvantages of underground cable in-comparison of over head transmission line?

Q. What are the disadvantages of underground cable in-comparison of over head transmission line?

A.            fault location is difficult

B.            initial cost is very high

C.            great care has to be taken in joining

D.            all of the above

Answer: all of the above

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