Long Flashover Arresters 1 What I’ll be presenting… Introduction to lightning and lightning arresters What are Long Flashover Arresters? Why do we need them? How do they work? What are their types? 2 What is a lightning stroke? It is an electric discharge between ◦ Cloud and earth ◦ Cloud and cloud ◦ Charge centers of the same cloud 3 Lightning stroke waveform 4 Types of lightning strokes Direct Stroke Indirect Stroke 5 What does lightning
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Early History • According to the History of Computing organization‚ data communication has its earliest roots in Samuel Morse ’s 1837 exhibition of a telegraph system. An account of data communication history posted by telecommunications experts at General Telecom‚ LLC also points to a telegraph patent that inventor Charles Wheatstone filed that same year. By 1843‚ telegraph service had become adopted by the Great Western Railway‚ an endorsement that allowed the service to expand across the nation
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Review Questions: 1. Why does the state-line-end-point (SLEP) vary with changes in turbine load? What do these changes represent? A. The position of the SLEP will vary with different loads to represent the decreased efficiency at loads away from max turbine efficiency. 2. Why do most propulsion turbines use multiple control valves instead of a single throttle valve? A. The multiple control valves allow for a less energy loss than using the throttle valve. 3. How are control valves adjusted
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Vodafone in 2012: Rethinking International Strategy The case calls for an analysis of the potential benefits from international scope in wireless telecommunications and the development of strategy recommendations for Vodafone. This case offers an opportunity to how to analyze the costs and benefits of international scope in an industry where global scale economies do not mandate an international presence. the benefits of a presence in multiple countries are far from self-evident—some of the most
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LETTER OF RECOMMENDATION I have great pleasure in recommending Miss. Kavya in her pursuit of higher educational qualification – Master’s Degree in Electrical engineering. I have been acquainted with Divya for the past four years as a student of undergraduate studies under the electronics and communication engineering in our institute. I have handled Digital Signal Processing and Advanced Digital Signal Processing‚ in the fifth and sixth of her undergraduate studies. She has consistently performed
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Thomas Edison is known as one of the greatest inventors of his time. As a young boy‚ no one ever taught him anything; he taught himself. He wouldn’t give up even when the task seemed impossible. He introduced many important inventions to the world that impact us in our everyday lives. In 1877 Edison filed a patent for the phonograph‚ his most original invention (Josephson 164). The phonograph had many uses including letter writing‚ playing music‚ telling time‚ and educational purposes; it was originally
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Alexander Graham Bell was born on March 3‚ 1847 in Edinburgh‚ Scotland. Working through numerous experiments in sound and advancing his father’s work on Visible Speech for deaf people Bell acquired his education.To continue his study about the human voice he opened a workshop. He also did important work in communication for the deaf. Throughout his life he held more than 18 patents. Bell was one of the primary inventors of the telephone. Through many years of experimentation with sound waves he created
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Week 8: Benefits of Wireless Technology in Higher Education The use of mobile wireless technology in higher education generates questions regarding what advantages this new technology generates. Studies (Kim‚ Mims‚ & Holmes‚ 2006) talk about the efficiency and effectiveness in teaching and learning created by mobile technology. But what does this mean? Certainly we can be more mobile‚ but how does this benefit learning? First‚ mobile wireless technology lets us communicate more easily. This allows
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a.) Smart grid is an electricity network type which integrates digital communication features to the service. Generally it provides central energy management to both parties of the electricity network‚ it enables • Consumers to monitor their utilization‚ costs and provide recommendations on usage habits. • Micro-stations to manage and monitor their input to electricity network • Providing remote monitoring micro-stations input to electricity network from • Power distributors to manage their grid
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Thomas Edison’s invention of the lightbulb was so significant that it is still effecting society to today. Thomas Edison’s lightbulb had to consist of three things‚ the first being a durable incandescent material‚ the second thing the lightbulb needed was to eliminate the oxygenation from the bulb‚ and the last thing the lightbulb needed was a filament material of high resistance. The first lightbulb was going to be made out of platinum‚ however‚ platinum was very expensive to distribute to homes
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