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Electric wires are hung between two cons...

Electric wires are hung between two consecutive poles with a slight sag, instead of stretching them out fully. Give reasons.

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This arrangement takes into account the expansion or contraction of the wire with the change in seasonal temperatures. Wires are fitted to two consecutive poles such that during winter, due to the fall in temperature, the contraction does not produce a thermal stress to bend the poles or to snap the wire.
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CHHAYA PUBLICATION-EXPANSION OF SOLIDS AND LIQUIDS-HIGHGER ORDER THINKING SKILL (HOTS) QUESTIONS
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