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Why are telephone lines allowed to sag

The cores of the telephone wires are made up of metal. This gives the sag shape that is seen with many Telephone . The sag of a Telephone line is that of a catenary (roughly latin for a chain) which reflects a shape under it's own weight. hence, it is advisable to allow them to sag during summer. /11/04 because telephone wires might contract and may eventually snap during cold days. This gives the sag shape that is. The sag of a Telephone line is that of a catenary (roughly latin for a chain) which reflects a shape under it's own weight. This gives the sag shape that is  . Mar 18, The sag of a Telephone line is that of a catenary (roughly latin for a chain) which reflects a shape under it's own weight. This is because the wires, like most materials, expand when they are heated. The additional length means that the wires lose. Telephone and electrical wires "sag" in the summer, in hot weather. Sag literally means to be bend in shape. In overhead transmission lines, the difference in level. Sag is provided in transmission lines in order to lessen the tension of the transmission lines. When the wires expand they . Bare telephone wires between poles expand due to the rise in atmospheric temperature, as these wires are made of aluminium alloy with other metal. rainer-daus.de › question-answer › telephone-wires-sag-in-summers-cl. Conductor: These are materials that allow free flow. effects of sag on electrical construction were examined. telephone lines and power lines.

  • While putting up the wires between the pole care is taken care in winter they are kept light so  . The telephone wires will sag in summer due to expansions.
    • This gives the sag shape that is seen with many Telephone wires. The sag is also needed to help with expansion and contraction that happens during the Summer and Winter seasons. The sag of a Telephone line is that of a catenary (roughly latin for a chain) which reflects a shape under it's own weight. The sag is also needed to help with expansion and contraction that happens during the Summer and Winter seasons. The sag of a Telephone line is that of a catenary (roughly latin for a chain) which reflects a shape under it's own weight. This gives the sag shape that is seen with many Telephone wires. While putting up the wires between the pole care is taken care in winter they are kept light so that they may . Oct 05,  · Answer: The telephone wires will sag in summer due to expansions. /09/07 All overhead power cables – including those running to a person's home – will have what is called “sag” in the utility industry and by the very. Complete step by step solution: Since metals expand with a rise in  . The wires expand due to thermal expansion, while in winters they contract and become taut. When the wires expand they develop sag. Not only for telephone wires it happens to high tension electrical wires also. Bare telephone wires between poles expand due to the rise in atmospheric temperature, as these wires are made of aluminium alloy with other metal. In terms of how much telephone lines (or any other suspended wires) are allowed to sag, that's a design decision based upon factors such as the tensile strength of the wire; wind, snow and ice-loading calculations; the minimum height at which the wire is permitted to hang; the height of the supporting poles/towers and the distance between them. Find step-by-step Physics solutions and your answer to the following textbook question: Telephone and electrical lines are allowed to sag between poles so that the tension will not . Complete step by step solution: Since metals expand with a rise in. The wires expand due to thermal expansion, while in winters they contract and become taut. While putting up the wires between the pole care is taken care in winter they are kept light so. The telephone wires will sag in summer due to expansions. B. to allow for the effect of a rise in temperature due to heating effect of current flowing. /10/01 A. because taut wires do not conduct sound easily. . Feb 28, why is it advisable to allow telephone wires to sag between poles? why is wire fences strung up preferably during the hot season? That means when winter comes, the cables will shrink. Why is it advisable to allow telephone lines to sag when stringing them between pokes in summer? Because of the physical property of the materials used in cables that makes them dilate and contract with the changes of temperature. That means when winter comes, the cables will shrink. Why is it advisable to allow telephone lines to sag when stringing them between pokes in summer? Because of the physical property of the materials used in cables that makes them dilate and contract with the changes of temperature. Missing: telephone lines. Aug 13,  · The lines are often heavily loaded because of increased power consumption, and the conductors, which are generally made of copper or aluminum, expand when heated. How can you model this cable sag. /04/27 When a cable is supported by the two ends, it will hang down a bit depending on the tension in the cable. . In the summer, because of thermal expansions, the telephone lines sag, and in the winter, due to contraction, they may break. Hence, they sag more on hot summer days than in winter. If the lines are not strung with enough sag in summer, they might contract too much and snap during the winter, especially when carrying ice. Answer /5 3 Brainly User Telephone lines are longer in a warm summer and shorter in a cold winter. In the summer, because of thermal expansions, the telephone lines sag, and in the winter, due to contraction, they may break. As a result, when setting up the wires between the poles, it's important to keep them somewhat loose in the summer so that they don't break in the winter due to contraction. In the summer, because of thermal expansions, the telephone lines sag, and in the winter, due to contraction, they may break. (a) Is it. Telephone and electrical lines are allowed to sag between poles so that the tension will not be too great when something hits or sits on the line. Telephone and electrical lines are allowed to sag between the poles so that the tension will not be to great when something hits or sits on the line. Tornadoes, hurricanes and other storms can seriously damage power lines and Any utility wire, including telephone or cable lines sagging or down could. Aug 13, The lines are often heavily loaded because of increased power consumption, and the conductors, which are generally made of copper or aluminum,  . So telephone wires will sag in summer due to expansion while you do suspect because of because of because of sighing expansion. Answer: The telephone wires will sag in summer due to expansions. While putting up the wires between the pole care is taken care in winter they are kept light so that they may not sag too much. Also, a wire suspended between two points must sag because it's physically impossible for the sag to be zero. Still stuck? If the lines are not strung with enough sag in summer, they might contract too much and snap during the winter, especially when carrying ice. Hence, they sag more on hot summer days than in winter. Because of the physical property of the. Why is it advisable to allow telephone lines to sag when stringing them between pokes in summer? I'm sorry. –. /07/13 I don't believe I would be permitted to upload a copy of it publicly. (a) Is it  . Telephone and electrical lines are allowed to sag between poles so that the tension will not be too great when something hits or sits on the line.
  • Answer: It is so because during winter the wires will contract and get shorten thus in order to prevent them from breaking apart they are left sagging or if they were tightly fixed between the poles then during winter the wires will contract and it will cause them to break apart.
    • A truly horizontal cable would have no upward. Because the cable has mass (and therefore a gravitational force pulling down), there must be an upward component of the tension to keep it at rest. highway crossing, railway, river, telephone lines. improved electrical properties, excellent sag-tension characteristics and superior corrosion i.e. . Telephone and electrical lines are allowed to sag between poles so that the tension will not be too great when something hits or sits on the line. why is wire fences strung up preferably during the hot season? why is it advisable to allow telephone wires to sag between poles? That expansion increases the slack between transmission line structures, causing them to sag. Transmission lines are designed to meet the requirements of state electrical codes. The lines are often heavily loaded because of increased power consumption, and the conductors, which are generally made of copper or aluminum, expand when heated. That expansion increases the slack between transmission line structures, causing them to sag. Transmission lines are designed to meet the requirements of state electrical codes. The lines are often heavily loaded because of increased power consumption, and the conductors, which are generally made of copper or aluminum, expand when heated. /12/14 Sagging transmission lines are actually a feature of high-voltage wires, because the towers are too far apart to allow sufficient tension to. Why or why not? Find step-by-step Physics solutions and your answer to the following textbook question: Telephone and electrical lines are allowed to sag between poles so that the tension will not be too great when something hits or sits on the line. (a) Is it possible to have the lines perfectly horizontal? The lines are often heavily loaded because of increased power consumption, and the conductors, which are generally made of copper or aluminum.