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1. 25 kV AC railway electrification: Railway electrification systems using alternating current (AC) at 25 kilovolts (kV) are used worldwide, especially for high-speed rail. It is usually supplied at the standard utility frequency (typically 50 or 60 Hz), which simplifies traction substations. (Engineering) [100%] 2023-12-27 [Electric rail transport]
2. 15 kV AC railway electrification: Railway electrification using alternating current (AC) at 15 kilovolts (kV) and 16.7 hertz (Hz) are used on transport railways in Germany, Austria, Switzerland, Sweden, and Norway. The high voltage enables high power transmission with the lower frequency reducing the ... (Standard current and voltage settings for much of Central Europe's train transport) [100%] 2023-12-27 [15 kV AC railway electrification] [Electric power distribution]...
3. Electrification: Electrification is the process of powering by electricity and, in many contexts, the introduction of such power by changing over from an earlier power source. The broad meaning of the term, such as in the history of technology, economic history ... (Physics) [78%] 2023-10-28 [Electric power]
4. Electrification: Electrification is the process of powering by electricity and, in many contexts, the introduction of such power by changing over from an earlier power source. In the context of history of technology and economic development, electrification refers to the build ... (Process of changing something to use electricity) [78%] 2024-11-05 [Electrification] [Electric power]...
5. Three-phase AC railway electrification: Three-phase AC railway electrification was used in Italy, Switzerland and the United States in the early twentieth century. Italy was the major user, from 1901 until 1976, although lines through two tunnels also used the system; the Simplon Tunnel ... (Engineering) [75%] 2023-12-27 [Electric rail transport]
6. Auckland railway electrification: Auckland railway electrification occurred in phases as part of investment in a new infrastructure for Auckland's urban railway network. Electrification of the network had been proposed for several decades. [69%] 2023-12-29 [Rail transport in Auckland] [Electric railways in New Zealand]...
7. Railway electrification system: A railway electrification system supplies electric power to railway trains and trams without an on-board prime mover or local fuel supply. Electric railways use either electric locomotives (hauling passengers or freight in separate cars), electric multiple units (passenger cars ... (Engineering) [69%] 2023-10-30 [Electric rail transport]
8. Railway electrification in Poland: Railway electrification in Poland is the process aimed at increasing the efficiency of railways and improving the railway services offered by supplying Polish railways with electricity and implementing electric rolling stock, which replaces rolling stock with other drives, mainly conventional ... (none) [60%] 2023-12-22 [Rail infrastructure in Poland] [Railway electrification by country]...
9. Railway electrification in Norway: The Norwegian railway network consists of 2,552 kilometers (1,586 mi) of electrified railway lines, constituting 62% of the Norwegian National Rail Administration's 4,114 kilometers (2,556 mi) of line. In 2008, electric traction accounted for 90 ... [60%] 2024-06-16 [Railway electrification in Norway] [History of rail transport in Norway]...
10. Rural Electrification Act: The Rural Electrification Act of 1936, enacted on May 20, 1936, provided federal loans for the installation of electrical distribution systems to serve isolated rural areas of the United States. The funding was channeled through cooperative electric power companies, hundreds ... (1936 United States federal law) [59%] 2024-08-08 [Acts of the 74th United States Congress] [Electric cooperatives of the United States]...
11. Contact electrification: Contact electrification is a phrase that describes the phenomenon whereby two surfaces become electrically charged when they contact and then separate. As such it is a subtopic of the more general area of triboelectricity, which includes sliding; often the two ... (Physics) [55%] 2023-10-27 [Electrical phenomena]
12. Dual electrification: Dual electrification is a system whereby a railway line is supplied power both via overhead catenary and a third rail. This is done to enable trains that use either system of power to share the same railway line, for example ... (Engineering) [55%] 2023-10-26 [Electric rail transport]
13. Central Organisation for Railway Electrification: The Central Organisation for Railway Electrification (CORE) is the unit of Indian Railways responsible for electrification of the network. The organisation, founded in 1979, is headquartered in Prayagraj, Uttar Pradesh. (Indian transport agency) [54%] 2024-03-09 [Government agencies of India] [Railway companies of India]...
14. Railway electrification in Great Britain: Railway electrification in Great Britain began in the late 19th century. A range of voltages has been used, employing both overhead lines and conductor rails. (Electrification of railway lines) [54%] 2024-11-04 [Rail infrastructure in the United Kingdom] [Railway electrification by country]...
15. AC Ace: AC Ace is a car which was produced by AC Cars of Thames Ditton, England, from 1953 until 1963. AC came back to the market after the Second World War with the 2-Litre range of cars in 1947, but ... [51%] 2023-09-18 [Sports cars] [AC vehicles]...
16. AC Ace: AC Ace — это автомобиль, который производился компанией AC Cars в пригородном поселке Темза Диттон, Англия, с 1953 по 1963 г. AC вернулся на рынок после Второй мировой войны с линейкой автомобилей объёмом 2 литра в 1947 году, но именно благодаря спортивному автомобилю Ace 1953 года, компания действительно заработала себе репутацию в послевоенные год. [51%] 2023-10-27
17. AC: AC — многозначная аббревиатура из букв латиницы. [48%] 2023-11-05
18. AC (complexity): In circuit complexity, AC is a complexity class hierarchy. Each class, AC, consists of the languages recognized by Boolean circuits with depth \displaystyle{ O(\log^i n) }[/math] and a polynomial number of unlimited fan-in AND and OR gates. (Complexity) [48%] 2024-01-02 [Circuit complexity] [Complexity classes]...
19. .ac: .ac es el dominio de nivel superior geográfico (ccTLD) para Isla Ascensión, administrado por NIC.AC, una subsidiaria de Internet Computer Bureau (una empresa del Reino Unido).​ El registro de dominios de segundo nivel está restringido a personas con título profesional ... [48%] 2023-09-28
20. AC: AC是一对拉丁字母，一般用于缩写AC和Ac可以指：. [48%] 2023-12-18