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Why do power lines carry electricity at 440000 volts when it is generated at 3000 volts?
Wiki User
∙ 12y ago
For any given load, P, the higher the supply voltage, V, the lower the resulting load current, I (i.e. I=P/V). By reducing the load current, conductors with a lower cross-sectional area can be used and save on their weight and the cost of copper or aluminium. A secondary advantage is that a lower load current also results in lower line losses (i.e. P = I2R).
Wiki User
∙ 12y ago
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Lightning carries Alternating current or Direct Current?
Power lines carry electricity as alternating current.
How does electricity get to a plug?
The electricity is produced by large generators in a power plant.Transformers in the power plant yard step up the voltage to more than half a million volts used by the power transmission lines.Power transmission lines carry the electricity over long distances between the power plants and cities.Transformers in a switching yard step the voltage down to 1000 to 5000 volts used by power distribution lines.Power distribution lines carry the electricity short distances between the switching yard and the customer locations.Service drop transformers on the pole or underground step the voltage down to the voltage needed by the customer (e.g. 220 volts center taped for household, 240 volt 3 phase for commercial, 480 volt 3 phase for industrial).Service drop lines carry the electricity from the service drop transformer to the customer's electric meter.Internal main wiring carries the electricity from the electric meter to the breaker box.Wires from the breakers in the breaker box to outlets carry the electricity to the outlet sockets.When you put a plug in an outlet socket, the plug gets electricity.
How electricity is transmitted to andaman?
No electricity is transmitted to Andaman from mainland.In fact it is generated at each island with the help of diesel generators according to need of the particular island.However, power is transmitted from Kalpong hydro electric project(North Andaman) to middle andamanwith transmission lines of 33 KV.
What are the disadvantages of electricity?
1. 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. 2. Electric devices, circuits, conduits, and transmission lines present a shock hazard to people: those who use it, those who work with it, and those who provide it. Short circuits and sparks also present a fire hazard. 3. High voltage lines are thought to cause hazards to plants, animals and people who live near them, because they produce magnetic and EMF fields. 4. People who have become dependent solely on electricity may be unable to function without it in an emergency.
How is hydro power produced?
Hydroelectric power is produced when water is dammed or concentrated to one point: turbines. The turbines spin as the rushing water speeds down the pipes or dam. As the turbines spin, they also turn a generator which needs movement to provide energy. The electricity produced by a generator is then transfered to power lines which carry electricity for hundreds of miles.
What are electrical transmission towers for?
Electrical transmission towers are meant to hold the power lines and to carry electricity.
How is wind power stored once it is recovered?
Wind power isn't stored. It is immediately generated into electricity that goes straight into the power lines. This is why there has to be power lines in and area for it to be able to have a wind farm.
How is wind power stored once it's recovered?
Wind power isn't stored. It is immediately generated into electricity that goes straight into the power lines. This is why there has to be power lines in and area for it to be able to have a wind farm.
What is the word which means 'conductor carrying electricity over large distance with minimum losses' - clue it wl have a 'miss' syllable in it?
Transmission lines are used to carry electricity.
What are power poles or lines?
um... isnt it kinda obvious? they are the cords that hang all over the place that carry electricity.
Lightning carries Alternating current or Direct Current?
Power lines carry electricity as alternating current.
What makes a train go?
Trains are powered by steam (generated by heating water over a coal fire), diesel fuel, or by electricity drawn from either overhead lines or from the tracks.
Can renewable energy and non-renewable energy can be used at the same time?
Answer : YES Renewable power sources and non-renewable power souces are both used to generate electricity, which is then transfered through the 'power grid' (power lines) to different houses. Electricity generated from renewable sources is not different in any way to electricity generated by non-renewable sources. Therefore, they can both be used at the same t5ime
Where does the electricity you get from an electrical outlet come from?
It is generated at a power plant and passes through power lines to the end users. It's a little more complicated than that, but that's the basic idea. It is a very inefficient system, with up to 50% of the power generated being lost in transmission.
When did electricity come to Nevada?
It gets the power from the electricity lines.
How does electricity get to a plug?
The electricity is produced by large generators in a power plant.Transformers in the power plant yard step up the voltage to more than half a million volts used by the power transmission lines.Power transmission lines carry the electricity over long distances between the power plants and cities.Transformers in a switching yard step the voltage down to 1000 to 5000 volts used by power distribution lines.Power distribution lines carry the electricity short distances between the switching yard and the customer locations.Service drop transformers on the pole or underground step the voltage down to the voltage needed by the customer (e.g. 220 volts center taped for household, 240 volt 3 phase for commercial, 480 volt 3 phase for industrial).Service drop lines carry the electricity from the service drop transformer to the customer's electric meter.Internal main wiring carries the electricity from the electric meter to the breaker box.Wires from the breakers in the breaker box to outlets carry the electricity to the outlet sockets.When you put a plug in an outlet socket, the plug gets electricity.
Why do power plants produce AC power naturally?
AC (alternating current) is the primary form of electricity because it can be generated at very high voltages and sent across many, many miles of carrying lines.
