motion control are called drives and employ any of the prime movers such as diesel or petrol engines gas or steam engines hydraulic motors and electric motors for supplying mechanical energy for motion control. Drives employing electric motors are known as Electrical drives. Fig 1.1 Block diagram of an Electrical Drive The advancement in electric drive system is very much related to the development in the power semiconductor devices technology. The introduction of the Silicon Controlled Rectifier
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Are electric cars a more sustainable method of transport than diesel or petrol powered cars? In this Case Study‚ I explored whether electric cars are as eco-friendly as they claim to be‚ providing a sustainable method of transport that could significantly reduce our carbon footprints if we all ditched the convectional vehicles‚ and changed to electric cars. I found many arguments both for and against electric cars. Electric cars are powered by an electric motor which draws its power from an on-board
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Electric Shock Anyone What Is This Module About? Nowadays‚ electrical appliances are commonly seen in every household. In your home‚ you probably have a television set‚ a radio‚ a karaoke player‚ a VCD player and other electrical appliances. But have you ever wondered how these appliances work? All of these need electricity to work. In this module‚ you will be introduced to the basic concepts of electricity. You will also learn about its uses. After going through the module‚ you should be able
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“ Explain the neo-malthusian theory with relevance to the current world situation” The term neo-Malthusianism was first used in 1877 by Dr. Samuel Van Houten‚ one of the vice- presidents of the Malthusian League. Neo-Malthusian theory is derived from Thomas Malthus’ proposition that limited resources keep populations in check and reduce economic growth. Neo- Malthusianism was not just a campaign in favour of birth control; it was particular perspective on the effects of population on human conduct
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Enterprise Rent-A-Car | Case # 1 | Enterprise Rent-A-Car has started its operations in 1962 by establishing and successfully developing a new niche in the car renting industry. The business had strictly focused on replacing local citizens’ cars due to repairs. Later on Enterprise started to serve two additional segments‚ leisure & discretionally rentals and business rentals. Newly launched segments were successful; however the main focus of Enterprise continued to be the initial
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GENERAL ELECTRIC General Electric is a company who strives to put their best foot forward. For more then 120 years‚ General Electric has been number one in the products they sell. From airplane engines to light bulbs‚ their attitude has been admired not only in America‚ but worldwide. GE serves customers in more than 100 countries and employs more than 300‚000 people worldwide. After all GE has accomplished‚ including revenues of 152.4 billion dollars in 2004‚ the company still maintains
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Electric Charge and Electric Field:-> 1. Electric Charge Electric charge is a fundamental property like mass‚ length etc associated with elementary particles for example electron‚ proton and many more. Electric charge is the property responsible for electric forces which acts between nucleus and electron to bind the atom together. Charges are of two kinds (i) negative charge (ii) positive charge Electrons are negatively charged particles and protons‚ of which nucleus is made of‚
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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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NOTE: This paper explains the theory and uses of the electric generator‚ and explains the differences between AC and DC generators. It also includes a glossary and a bibliography. --------------------------------------------------- ELECTRIC GENERATORS In its most basic definition‚ an electric generator is a machine that produces electricity. Generators produce almost all of the electricity used by people. They supply the electric power that runs machines in factories‚ provide lighting‚ and operate
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responsible. I was only 16 when I started so I never had to put gas in the car or my mom’s SUV. When I turned 18 that’s when I started working at jimmy johns and driving around a lot more‚ this is when I noticed all the money that I wasn’t making and everything I made went to the car. I would spend forty dollars on gas and make fifty dollars on tips and only go home with ten bucks. I was getting sick of all the money I had to put in the car but at the same time I was fine with it because I always had a place
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