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All materials expand with temperature increases.
This expansion in the metals and plastics of phone lines would cause them to lengthen, and thus go slack.
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∙ 13y ago
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Why do engineers put up power lines so that they are slack in hot weathers?
Because, in the cooler weather, the lines contract. If the warm weather slack were not engineered into the system, the contractions could break the wires or pull the poles down.
Why farmers usually string up their wire fences during the hot season?
Because heat expands metal and If they strung the fences in could weather the wire would become slack in the warm weather. Also, it is easier to unroll the wire when it is warm.
Why do telephone wires become loose and sag in winter?
They shouldn't, usually it is the other way around. As with all wire, the temperature effects wire lengths. When wires become warm as in a hot summer day the wires expand and droop and likewise when they become cold as in winter they contract and tighten up. The wires have to be installed to take this condition into consideration. There is a specific engineered sag allowed for each type of conductor from pole fix point to pole fix point.
When will a telephone wire be longer summer or winter?
When metals (like the copper in the telephone wires) gets exposed to heat, they expand (thermal expansion) and when the get cooled they shrink. This directly implies that cables are longer in summer when it is hot. So telephone wires are longer in the summer.
Does a cat groom itself more in cold weather or in warm weather?
Warm weather.
What is the typical weather brought by a warm front?
warm humid weather
What are some examples of warm weather metaphors?
warm weather metaphors
What is the weather of the northeast?
Warm Weather
What is the subject and predicate in the sentence- the weather was very warm and sunny?
Subject: the weather Predicate: was very warm and sunny
Will the weather in KY be warm enough to swim tomorrow?
Where can you swim during warm weather?
Is the weather cold or warm in the equator?
It is warm.
Do alligatoras live in cold or hot weather?
they live in warm weather but they can live in cold weather because they are warm blooded.
