Question

If overhead electric cables are being laid in summers, Should they be tightened up or left a little loose? Justify your answer.

Answer 1

Answer:

If overhead electric cables are laid in summers, they should be left a little loose. This will save the cables from tearing when they start contracting in winters.

Answer 2

Explanation:

The overhead electric cables should be looser because the copper wire at the heart of the wire expands slightly - making the wires longer. since they are fixed at both ends, the wires sag due to the slight increase in length.

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