The primary purpose of twisting wires/cables is retaining flexibility while increasing the ampacity (current capacity of wire/conductor). Twisted wire/cable is more flexible than a solid wire with same ampacity.
Shielding against crosscoupled signals from other wires in a cable.
By keeping the two wires as close to each other as possible it ensures both wires pick up nearly the same amount of crosscoupled signals from other wires in the cable, making it easy to remove in a differential amplifier with high common mode rejection at the receiving end. In other words the crosscoupled signals from other wires cancel out each other in twisted pair cables.
To reduce crosstalk or electromagnetic induction between pairs of wires, two insulated copper wires are twisted around each other
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Twists in telecom cable pairs lowers their tendency to radiate electromagnetic radiation, also known as crosstalk ,or overhearing in adjacent circuits. If you separate the twists for jointing purposes you increase em radiation at that pont. Twisting also keeps the loss of signal per metre to a low level.Pairs are twisted round each other at a rate of about 25 twists per metre and the pairs are then twisted again around the core of the cable.
Twisted pair cable is a type of wire in which two conductors of a single circut are twisted (paired) together for the purposes of canceling out electromagnetic interferance from outside sources and crosstalk between neighboring pairs of wires. The amount of twists per meter changes along the length of the cable.
The twists in the wire cancels the magnetic coupling (or nearly all of depending on if there are even or odd number of twists). See Clayton Paul's book on Introduction to EMI/EMC.
blabla ^ What the hell kind of answer is that? :P UTP stands for Un-shielded Twisted Pair, and it is these twists that help to avoid crosstalk.
Twisted pair wires have twists that are a certain number of twists per foot depending on twisted bundle size. The purpose of the twists is so the magnetic field that rises and collapses around each wire within the twisted pair cancel each other out since they are of opposite polarity. The coaxial cable is just a single conductor within a grounded braid or foil jacket to help prevent unwanted magnetic fields (signals) from entering the actual signal wire that is in the center.
To negate creating a uniform magnetic field from the cable.
The primary function of the Ethernet hub is to connect the different cable segments. ...
if by "twisted pair cable" you mean a cat5 cable which is commonly used as an ethernet cable. then it´s made of copper.
STP - Shielded Twisted Pair is twisted to reduces crosstalk. Crosstalk is when the signal crosses wire and reduces the communication quality. Twisting the pairs reduces the signal transmission to other wires in the cable "pack". Twisting them increases the length the cable can be run. Category 5 has a usable length of 100m, 330ft.
Both the coaxial cable and twisted pair cable have a basic connection medium for network cabling. <<>> Coaxial cable can be used for transmission of RF (radio frequencies) whereas Cat 5 (twisted pairs cable) can not.