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Multiple Units Of India
A multiple-unit train or simply multiple unit (MU) is a self-propelled train composed of one or more Coach (rail), carriages joined together, which when coupled to another multiple unit can be controlled by a single driver, with multiple-unit train control. Although multiple units consist of several carriages, single self-propelled carriages, such as railbuses and trams – are in fact multiple-units when two or more of them are working connected through multiple-unit train control. In India, MUs are used for all Suburban rail in India, suburban trains and Rapid transit in India, metros and are increasingly used for short-medium-long distance trains also such as DEMUs, SSEMUs, MEMUs and Vande Bharat (trainset), Vande Bharat Express. Design Most MUs are powered either by traction motors, receiving their power through a Third rail electric system, third rail or overhead lines, overhead wire (electric multiple unit, EMU), or by a diesel engine driving a generator producing electrici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MEMU
In Indian Railways, a MEMU is an electric multiple unit (EMU) train that serves short and medium-distance routes in India, as compared to normal EMU trains that connect urban and suburban areas. The acronym stands for Mainline Electric Multiple Unit. History Indian Railways (IR) started MEMU service on Asansol – Adra section on 15 July 1995 and on Kharagpur – Tata section on 22 July 1995. Delhi-Panipat MEMU service started on 27 September 1995. Raipur–Durg–Bhatapara–Raipur–Bilaspur MEMU service started on 17 October 1995. Arakkonam-Jolarpettai MEMU service on 22 May 2000. Bankura-Midnapore MEMU started on 30 June 2000. The first 20 coach MEMU ran between Surat to Virar in 2017. Since 2019, 3-phase MEMUs have started replacing existing MEMU rakes. New 3rd generation was rolled out from RCF Kapurthala with following features: # Ethernet-based Train Control Management System which provides advanced control features # designed for speeds of up to 110 kmph # Energy effi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiple-unit
A multiple-unit train (or multiple unit (MU)) is a self-propelled train composed of one or more carriages joined, and where one or more of the carriages have the means of propulsion built in. By contrast, a locomotive-hauled train has all of the carriages unpowered. An implication of this is that all the powered carriages needs to be controllable by a single engineer or driver, which is a case of the broader concept of multiple-unit train control. In other words, all "multiple units" employ some variation of multiple-unit train control. In the broader context "unit" means any powered rail vehicle, including locomotives (that does not carry cargo) and powered cargo-carrying carriages. In the context of this article, "unit" refers specifically to the latter only (whether the cargo is passengers or some other cargo). What follows is that if coupled to another multiple unit, all MUs can still be controlled by the single driver, with multiple-unit train control. Although mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prime Mover (locomotive)
In engineering, a prime mover is an engine that converts chemical energy of a fuel into useful work. In a locomotive, the prime mover is thus the source of power for its propulsion. In an engine-generator set, the engine is the prime mover, as distinct from the generator. Definition In a diesel-mechanical locomotive, the prime mover is the diesel engine that is mechanically coupled to the driving wheels (drivers). In a diesel-hydraulic locomotive, the prime mover is the diesel engine that powers the pumps of one or more torque converters mechanically coupled to the drivers. In a diesel-electric locomotive, the prime mover is the diesel engine that rotates the main generator responsible for producing electricity to power the traction motors that are geared to the drivers. The prime mover can also be a gas turbine instead of a diesel engine. In either case, the generator, traction motors and interconnecting apparatus are considered to be the power transmission system and not p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
25 KV AC
Railway electrification systems using alternating current (AC) at are used worldwide, especially for high-speed rail. It is usually supplied at the standard utility frequency (typically 50 or 60Hz), which simplifies traction substations. The development of 25kV AC electrification is closely connected with that of successfully using utility frequency. This electrification is ideal for railways that cover long distances or carry heavy traffic. After some experimentation before World War II in Hungary and in the Black Forest in Germany, it came into widespread use in the 1950s. One of the reasons it was not introduced earlier was the lack of suitable small and lightweight control and rectification equipment before the development of solid-state rectifiers and related technology. Another reason was the increased clearance required under bridges and in tunnels, which would have required major civil engineering in order to provide the increased clearance to live parts. Where existin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suburban Train
Commuter rail or suburban rail is a passenger rail service that primarily operates within a metropolitan area, connecting commuters to a central city from adjacent suburbs or commuter towns. Commuter rail systems can use locomotive-hauled trains or multiple units, using electric or diesel propulsion. Distance charges or zone pricing may be used. The term can refer to systems with a wide variety of different features and service frequencies, but is often used in contrast to rapid transit or light rail. Some services share similarities with both commuter rail and high-frequency rapid transit; examples include German S-Bahn in some cities, the Réseau Express Régional (RER) in Paris, the S Lines in Milan, many Japanese commuter systems, the East Rail line in Hong Kong, and some Australasian suburban networks, such as Sydney Trains. Many commuter rail systems share tracks with other passenger services and freight. In North America, commuter rail sometimes refers only to syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conurbation
A conurbation is a region consisting of a number of metropolises, cities, large towns, and other urban areas which, through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most cases, a conurbation is a wikt:polycentric, polycentric urbanised area in which transportation has developed to link areas. They create a single urban labour economics, labour market or travel to work area. Conurbations often emerged in coal-mining regions during the period of the Industrial Revolution. Patrick Geddes coined the term in his book ''Cities in Evolution'' (1915). He drew attention to the ability of the new technology at the time of electric power and motorised transport to allow cities to spread and agglomerate together, and gave as examples "West Midlands conurbation, Midlandton" in England, the Ruhr in Germany, Randstad in the Netherlands, and the Northeast megalopolis, Northeastern Seaboard in the United States. For cens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
25 KV AC Railway Electrification
Railway electrification systems using alternating current (AC) at are used worldwide, especially for high-speed rail. It is usually supplied at the standard utility frequency (typically 50 or 60Hz), which simplifies traction substations. The development of 25kV AC electrification is closely connected with that of successfully using utility frequency. This electrification is ideal for railways that cover long distances or carry heavy traffic. After some experimentation before World War II in Hungary and in the Black Forest in Germany, it came into widespread use in the 1950s. One of the reasons it was not introduced earlier was the lack of suitable small and lightweight control and rectification equipment before the development of solid-state rectifiers and related technology. Another reason was the increased clearance required under bridges and in tunnels, which would have required major civil engineering in order to provide the increased clearance to live parts. Where existin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Capital Region (India)
The National Capital Region (NCR; ) is a region centred upon the National Capital Territory (NCT) of Delhi in India. It encompasses Delhi and several districts surrounding it from the states of Haryana, Uttar Pradesh, and Rajasthan. The NCR and the associated National Capital Region Planning Board (NCRPB) were created in 1985 to plan the development of the region and to evolve ''harmonized policies for the control of land-uses and development of infrastructure'' in the region. Prominent cities of the NCR include Delhi, Faridabad, Ghaziabad, Gurgaon and Noida. The NCR is a ''rural-urban'' region, with a population of over 46,069,000 and an urbanisation level of 62.6%. As well as cities and towns, the NCR contains ecologically sensitive areas like the Aravalli ridge, forests, wildlife and bird sanctuaries. The Delhi Extended Urban Agglomeration, a part of the NCR, had an estimated GDP of $370 billion (measured in terms of GDP PPP) in 2015–16. Despite being a part of the NCR, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delhi Metro
The Delhi Metro is a rapid transit system that serves Delhi and the adjoining satellite cities of Faridabad, Gurugram, Noida, Bahadurgarh, and Ballabhgarh in the National Capital Region (India), National Capital Region of India. The system consists of #Network, 10 colour-coded lines serving List of Delhi Metro stations, 289 stations, with a total length of 395 km (245 mi). It is India's Urban rail transit in India#List of systems, largest and busiest Urban rail transit in India, metro rail system and the second-oldest, after the Kolkata Metro. The metro has a mix of underground, at-grade, and elevated stations using 5 ft 6 in gauge railway, broad-gauge and standard-gauge tracks. The metro makes over 4,300 trips daily. Construction began in 1998, and the first elevated section (Shahdara metro station, Shahdara to Tis Hazari metro station, Tis Hazari) on the Red Line (Delhi Metro), Red Line opened on 25 December 2002. The first underground section (Vishwa Vidyalaya metro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid Transit
Rapid transit or mass rapid transit (MRT) or heavy rail, commonly referred to as metro, is a type of high-capacity public transport that is generally built in urban areas. A grade separation, grade separated rapid transit line below ground surface through a tunnel can be regionally called a subway, tube, metro or underground. They are sometimes grade-separated on elevated railways, in which case some are referred to as el trains – short for "elevated" – or skytrains. Rapid transit systems are usually electric railway, electric railways, that unlike buses or trams operate on an exclusive right-of-way (transportation), right-of-way, which cannot be accessed by pedestrians or other vehicles. Modern services on rapid transit systems are provided on designated lines between metro station, stations typically using electric multiple units on railway tracks. Some systems use rubber-tyred metro, guided rubber tires, magnetic levitation (''maglev''), or monorail. The stations typica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
