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Question

Which type of earthing is used by transmission lines?

A.

Plate earthing

B.

Rod earthing

C.

Strip earthing

D.

All of the above

Answer ( Option C)

Strip earthing

Solution

Strip earthing is used by transmission lines. The strip electrodes of cross-section not less than  25 mm x 1.6mm is buried in horizontal of a minimum depth of 0.5 m.

Hence, the correct option is (C).

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