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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Advantages and Disadvantages of Electric Vehicles Almost all households in this world uses a gas powered vehicles which causes the greenhouse effect or more known as the global warming. The global warming itself is caused by the emission of the gas powered vehicles. To prevent this‚ technologists have invented a vehicle that uses electricity. Although there are many benefits‚ in a developing countries‚ owning and using an electric car results in having both advantages and also disadvantages.
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Chapter 1 The History of Electric Transformer INTRODUCTION: Transformer is a device that transfers electric energy from one circuit to another‚ usually with a change in voltage. Transformers work only with a varying electric current‚ such as alternating current (AC). Transformers are important in the distribution of electric power. They raise the voltage of the electricity generated at a power plant to the high levels needed to transmit the electricity efficiently. Other transformers
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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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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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In the case of the article about the Norton Company and 3M‚ the quantitative and systems school of management thought was presented. The Norton Company adopted this school of thought since that was their technique to expand new product lines. Even though the company started on the time during the classical school of management thought was used mostly‚ wherein there should be a developed efforts to find the best way to perform and managed tasks‚ their management team or board of directors division
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Foreign Exchange Hedging Strategies at General Motors: Transactional and Translational Exposures Prepared By: Danial Wahaj Khan EXECUTIVE SUMMARY: This report is based on a practical scenario solution of General motors. The report addresses the problem given in scenario which is the change in policy of hedging with detailed reasoning. The report then looks at the different available hedging instruments to the firm. Profitability of both instruments has been compared and lowest cost option was
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Competitive Strategy LB5206 Amazon.com “Live” Case Study Table of Content Table of Content 2 Executive Summary 2 Corporate Culture 3 Industry Analysis through Porter’s Five Forces 5 Competitors for amazon.com 8 SWOT Analysis of Amazon 9 Difficulties faced by Amazon.com 12 Competitive Strategies 12 Recommendations 14 General References 15 Executive Summary Amazon.com is a customer centric company. They put more effort in improving their system to make the experience of customer more comfortable
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Amazon Dividend policy Amazon.com (NASDAQ.AMZA) had one of the best performing stocks of the internet era. When their stocks collapse in the early 2000’s along with their peers‚ when the internet boom briefly turned broken‚ Amazon decided to broaden its original scope‚ going beyond the book market and include all things e-retail. The company also went in new directions with initiatives that eventually led to the cloud-computing pioneer Amazon Web Services and a host of other business ideas. The
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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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