In electricity generation‚ an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electrons in the windings to flow through the external electrical circuit. It is somewhat analogous to a water pump‚ which creates a flow of water but does not create the water inside. The source of mechanical energy may be a reciprocating or turbine steam engine‚ water falling through a turbine or waterwheel‚ an internal combustion engine‚ a wind turbine‚ a hand crank
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first applications of electricity was the first incandescent light bulb in around 1870. The electric overhaul of society obviously brought many fresh new dangers with it‚ but it eliminated some of the old ones‚ like the naked flames of gas lighting that was commonly used in homes and factories then. The Joule heating effect that can be found in light bulbs is also present in electric heating. Electric heating has been thought of as wasteful in the past because in order to create that heat energy
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The Advantages and Disadvantages of Electric Cars Introduction to Electric Cars An electric car is a vehicle which is driven by electric engines. The engines use electrical energy which is usually stored in batteries. Electric car is a variation of electric vehicle (EV). EV speaks of any vehicles which are propelled by electric engines. “Electric car” is a general term for high-speed vehicles which are powered by electricity. In the United States‚ low-speed vehicles which are powered by electricity
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The Electric Car has a history but is there a future in the UK or will there be a better option? The invention of the first Electric Car was in 1830 but was not perfected until the creation of rechargeable batteries in 1859. By 1912 50 companies were producing 34‚000 electric cars. Once the development of the electric starting motor occurred and the price of fuel was cheap then the electric cars industry vanished. The oil crisis in the 1970’s caused some re-emergence of electric cars but the
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The Future Is Electric‚ Not Oil-powered Cars Electric vehicles are a topic of great importance to the future of GM … and to the future of our country for that matter.. Over the last day and half‚ you’ve heard a number of interesting perspectives about how to address energy independence and climate change … and there are some great vehicles on display here that contribute to the solution to those issues. I’d like to talk about General Motors’ vision … and why we are also inspired to help
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pushed away‚ or repelled‚ each other. The evidence showed that electric force made matter either attract or repel other matter. Electric force is caused by electric charge. Electric charge is a property of the bits of matter within atoms. Electric force can cause matter to attract or repel because there are two kinds of charge – positive and negative charge. The effects of electric force can be summarized as the law of electric charge: Pieces of matter with the same kind of charge repel
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Reactions to the Lincoln Assassination Washington‚ DC‚ April 14‚ 1865‚ 10:45 p.m.‚ the President of the United States was shot with a Philadelphia Deringer pistol at Ford’s Theatre while attending the play Our American Cousin. He was carried across the street where he died early the next morning. The assassin‚ John Wilkes Booth‚ made his escape by horse and rode to the house of Doctor Mudd‚ a resident of Maryland who repaired his leg. The next day Booth was found hiding in a barn and was killed
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1 ELECTRIC MOTORS I. Introduction Electric motors are considered to be important mechanical devices. They usually convert the electrical energy coming from the mechanical device into its kinetic energy to make it work (Petingco and Resurreccion‚ 2011). In this exercise‚ the students were tasked to use an example of an electric motor‚ identify its parts‚ and make it work. All electrical motors are equipped with stator and rotor. Stator is known as the stationary part of an electric motor
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The Challenge of Designing Electric Cars Dr. Tobias Giebel Tobias Giebel 博士 Sahnghai EXPO‚ May 2010 Contents 内容 • Introduction Group Research and Volkswagen Research Lab China (VRC) 大众汽车集团研发中心概况和大众汽车中国研究实验室(VRC)介绍 • Volkswagens Strategy for Powertrains and Fuel 大众汽车的动力总成及燃料战略 • Blue Motion Technologies 蓝驱技术 • Hybrid Technologies 混合动力技术 • Electrotraction 电驱动技术 • Hydrogen Technologies 氢技术 • Modular Toolbox 模块化设计矩阵 • Conclusion 结论 Dr. Tobias Giebel Tobias Giebel 博士 The Volkswagen Portfolio
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whether it is sustainable. General electric: Headquarters Fairfield‚ Connecticut‚ U.S. Revenue: US$ 182.515 billion (2008) Net income: US$ 17.410 billion (2008) Total assets: US$ 797.769 billion (2008) Employees: 323‚000 (2008) CEO & Chairman – Jeffrey R. Immelt Lines of business: Aviation‚ Jet engines‚ Electricity‚ Entertainment‚ Finance‚ Gas turbines‚ Generation‚ Industrial Automation‚ Lighting‚ Medical imaging equipment‚ Medical technology‚ Health informatics‚ Electric motors‚ Locomotives‚ Wind turbines
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