taixyz1992
Posts : 219
Join date : 2010-10-12
 |  Subject: Electric locomotive  Tue Nov 30, 2010 3:45 pm | |
| An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or an on-board energy storage device (such as a chemical battery or fuel cell). Electrically propelled locomotives with on-board fuelled prime movers, such as diesel engines or gas turbines, are classed as diesel-electric or gas turbine electric locomotives because the electric generator/motor combination only serves as a power transmission system. Electricity is used to eliminate smoke and take advantage of the high efficiency of electric motors; however, the cost of railway electrification means that usually only heavily-used lines can be electrified. diamond engagement ringsbracelet charms | |
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