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Why do power lines sag lower between telephone poles in summer than winter?
Wiki User
∙ 7y ago
the metal inside the wire heats up leading to the expansion of the wire.
Wiki User
∙ 11y ago
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In anyone lived in a pretty how town the lines spring summer autumn winter represent the?
passage of time.
Why do telegraph wires sag more in summer than in winter?
Sagging Power LinesIn the summer, power lines warm up with the weather. Since materials expand when they get warm, the power lines stretch out and sag. The opposite happens in the winter, as the power lines get colder, they contract. Also, in the summer the electrical load on the line is generally greater. This in turn causes increased temperature and can lead to the line sagging.
Two reasons how the telephone has had a great impact on the development of Canada?
When first created, telephones gave many jobs to women, who had to connect telephone lines and use roller blades to quicky move. Secondly, it is obvious that telephones improved communications between people.
Who said Now is the winter?
It is a quote from a Shakespeare play, Richard III. The lines are said by the character playing Richard. "Now is the winter of our discontent Made glorious summer by this sun of York; And all the clouds that lour'd upon our house In the deep bosom of the ocean buried. Now are our brows bound with victorious wreaths; Our bruised arms hung up for monuments;............."
What is the angle between lines of force and equipotential lines in an electrical field?
The angle is a right angle.
Why is it advisable to allow telephone lines to sag when stringing them between poles during the summer?
Because they will contract in the winter. If you strung them tightly during summer, when the cold weather arrived, the lines would shrink, and maybe snap.
In the summer the power lines hang down between the posts then why dont the engineers tighten them up?
When objects are cooled down, they contract. Engineers who put up telephone wires in the summer leave the wires hanging slack so that in winter, the wires have a chance to contract without pulling the poles and damaging property or infrastructure.
Why is a power line more likely to break in winter than in Summer even if it is loaded with the same weight?
Heat in the summer makes materials expand which make power lines somewhat elastic. During the cold months of winter the power lines contract. The difference of the reaction of the materials during seasons is why a power line is more likely to break in the winter than in the summer bearing the same weight.
Which latitude lines mark the summer and winter solstices?
The Tropic of Cancer and the Tropic of Capricorn.
Why electric transmission lines between two poles are found to sag in summer?
The metal conductor in the line contracts in the cold of winter making the line more taunt, and expands making the line longer in the summer's heat. Thus the summer 'sag.'
In anyone lived in a pretty how the lines spring summer autumn winter represents the?
passage of time.
What material are phone lines made of?
Telephone lines are made of iron or steel. Between the iron or steel core and the pipe is an insulating material. All Telephone lines are made and work this way.
In anyone lived in a pretty how town the lines spring summer autumn winter represent the?
passage of time.
Why do telegraph wires sag more in summer than in winter?
Sagging Power LinesIn the summer, power lines warm up with the weather. Since materials expand when they get warm, the power lines stretch out and sag. The opposite happens in the winter, as the power lines get colder, they contract. Also, in the summer the electrical load on the line is generally greater. This in turn causes increased temperature and can lead to the line sagging.
What is the reason during the summer when they set up electrical cable they allow the cables to sag?
Due to the thermal expansion of the wiring materials, the wires expand in both width and length. This affects electrical transmission lines, telephone lines, and telegraph lines because of the large space between supporting poles. Example : Copper (Cu) Thermal Expansion= 17.6 μm/m/oC
What is an electronic device used for communication between different computers through telephone lines called?
modem
Why is it advisable to allow telephone wires to sag between poles?
because telephone wires might contract and may eventually snap during cold days. hence, it is advisable to allow them to sag during summer days to allow contraction for cold days. -Hadisa Nuddin
