what are some advantages and disadvantages to using superconductors as electric transmission lines?
152059
Insulators show very high resistance to electricity. Conductors like copper show some resistance. Another class of materials show no resistance at all when cooled to very low temperatures, cooler than the coolest deep freezer. Called superconductors, they were discovered in 1911.
1385390
Typical voltages for long distance transmission are in the range of 155,000 to 765,000 volts in order to reduce line losses. A typical maximum transmission distance is about 300 miles (483 km).
839654
DC requires much more complex circuitry or inefficient motor/generator sets to convert the voltage. However, if you can get high-voltage DC, it's more efficient than AC for transmission. One problem with AC is capacitance and inductance in the wires. Both these cause transmission losses which waste energy.
1173737
Large transformers are used to run transmission lines at high voltages in order to keep losses to a minimum. But high voltage is dangerous, particularly to life, so bringing it into a house would not be an acceptable risk. ... DC arcs do not "quench" as easily (because voltage does not go through zero).
395265
AC is much easier (therefore cheaper) to step up and down in voltage than DC, and can be done more efficiently (typcially, currently) than the much more expensive and complex DC step-up/step-down systems. That is why AC is used for mains power transmission at a national level.
646577
['No time lag or transmission delay.', 'Linear and quick response and good accuracy.', 'No entrainment or contamination in control medium.', 'Integrated control system and easier interconnections.', 'Low power requirements.', 'Speed of response is substantially instantaneous.']
495585
The use of AC makes the transmission of electrical power to great distances much more economical. Suppose we need to transmit power W (watts, or more likely megawatts, millions of watts) from the power station where it is produced (by steam turbines or water turbines) to distant users.
1187745
['Use of transistors.', 'Magnetic memory and magnetic storage disks.', 'High speed I/O devices.', 'Invention and use of high level languages such as Fortran and Cobol.', 'Reduced size.', 'Solution to heat generation.', 'Communication by using telephone line.', 'Improvement of speed and reliability.']
158279
['It is not affected by EMI or RFI.', 'Each pair of cables is wrapped in metallic foil.', 'It combines the technique of cancellation, shielding, and twisting to protect data.', 'It typically contains 4 pairs of fiber-optic wires.', 'It is more expensive than UTP cabling is. Explanation:']
792030
The first disadvantage is that, if one component in a series circuit fails, then all the components in the circuit fail because the circuit has been broken. The second disadvantage is that the more components there are in a series circuit, the greater the circuit's resistance*.
1244707
['The cable length is limited. ... ', 'This network topology can perform well only for a limited number of nodes. ... ', 'It is suitable for networks with low traffic. ... ', 'It is heavily dependent on the central bus. ... ', 'It is not easy to isolate faults in the network nodes.']
561958
Advantages and disadvantages of a bus network The disadvantages of a bus network are: if the main cable fails or gets damaged the whole network will fail. as more workstations are connected the performance of the network will become slower because of data collisions.
1357630
Low-temperature superconductor (LTS) wires are made from superconductors with low critical temperature, such as Nb3Sn (niobium-tin) and NbTi (niobium-titanium). Often the superconductor is in filament form in a copper or aluminium matrix which carries the current should the superconductor quench for any reason.
633061
['Use of vacuum tubes to make circuits.', 'Use of magnetic drums.', 'Use of machine language and symbols in instructions.', 'Very small amount of storage space.', 'Use of punch cards as I/O devices.', 'Huge in size and poor in mobility.', 'Very slow and less reliable output.']
145180
The advantages of using wired connections include dedicated bandwidth instead of having share with other users, less attacks of network traffic interruptions, and less susceptible to interference and outages than wireless access points. Use wired ports for desktops and computer labs instead of wireless.
272441
Originally Answered: What are advantages and disadvantages of electrical engineering? 3. Electricity can cause pollution if it is generated by fossil fuels, or nuclear energy. It can affect animal life if it is generated by hydroelectric dams or tidal power.
86695
Fiber optic cables transmit data at much higher speed than copper wires. This is because the speed of light is greater than the speed of electrons. Fiber optic cables have a much larger bandwidth of over 60 Tbps in comparison to 10 Gbps bandwidth of copper wires. ... Fiber cables are thin and lightweight.