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Almost all electrical power on Earth is generated with a turbine of some type. Turbines are commonly driven by wind, water, steam or burning gas. The turbine drives an electric generator. Power sources include:
Water is boiled by coal burned in a thermal power plant, about 40% of all electricity is generated this way.7
Nuclear fission heat created in a nuclear reactor creates steam. Less than 15% of electricity is generated this way.
Renewables. The steam is generated by:
Solar thermal energy (the sun as the heat source): solar parabolic troughs and solar power towers concentrate sunlight to heat a heat transfer fluid, which is then used to produce steam.
Geothermal power. Either steam under pressure emerges from the ground and drives a turbine or hot water evaporates a low boiling liquid to create vapor to drive a turbine.
Large dams such as Hoover Dam can provide large amounts of hydroelectric power; it has 2.07 GW capability.
Gas Natural gas is burned in a gas turbine, turbines are driven directly by gases produced by combustion. Combined cycle are driven by both steam and natural gas. They generate power by burning natural gas in a gas turbine and use residual heat to generate steam. At least 20% of the worlds electricity is generated by natural gas.
Water Energy is captured from the movement of water. From falling water (dam), the rise and fall of tides or ocean thermal currents. Each driving a water turbine to produce approximately 16% of the worlds electricity.
Wind The windmill was a very early wind turbine. In a solar updraft tower wind is artificially produced. Before 2010 less than 2% of the worlds electricity was produced from wind.
Electrician on a construction site
Electricians, in addition to repair defects associated with the current also have other jobs. Very often help electrician is needed to properly design the electrical network in the proposed facility. Also during the construction electrician with his team in control of the electrical installation of the network, because only authorized persons may perform such work. It is very important to install the appropriate wiring to the building during the operation met its functions. Therefore, this electrician is responsible for the oversight of electricity on site and very often his help is invaluable, because it allows the reception of installations, without which the building does not meet the required functions.
How to become an electrician?
While the electrician is usually associated with you in middle age, it is said that young people are not interested in the profession. However, there is a problem in obtaining such a profession, because people finishing high school prospect of continuing education in technical profile electrician is quite frightening. It is in fact one of the most difficult for young people profile, but still someone determined and having interest in electric definitely can handle. Opportunities to gain this profession also appear for higher studies, except that in this case it is also difficult field of study.