ECNG2000 – Electromechanical Energy Conversion Tutorial 4 – DC Machine 1. Describe operation of DC machine (motor and generator) using illustrations. Specifically explain the purpose of: a. brushes d. armature winding b. split ring commutators e. effect of back emf (in operation) c. field winding 2. Draw the different configurations of DC machines a. shunt c. separately excited b. series 3. Develop‚ using Kirchhoff’s laws‚ equation for Ea (armature voltage) in both motoring and generating mode
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Machine Foundations Sinchan Roy Chowdhury CIVIL ENGG DEPT SEC: AY ID NO: 110409040 SESSION-2012-13 7th SEM UG Sinchan Roy Chowdhury CIVIL ENGG DEPT SEC: AY ID NO: 110409040 SESSION-2012-13 7th SEM UG BENGAL ENGINEERING AND SCIENCE UNIVERSITY SHIBPUR [Pick the date] BENGAL ENGINEERING AND SCIENCE UNIVERSITY SHIBPUR [Pick the date] A Project under the guidance of Dr Kalyan Kumar Chattopadhya
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Las Hermanas The Roman Catholic Church is something my family and I are familiar with. In Los Angeles I went to a co-ed Catholic school called St. Eugene. When I first picked up the book I was excited to find out the back story of the organization of Las Hermanas. “In the forefront of liberation of the Mexican American community are beautiful and courageous women‚ women who know how to fight‚” Canciόn de Las Hermanas. That quote summarizes the movement dealing with Latina women in the Catholic
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Political Machines Political Machines are an organized group that controls a political party in a city. They would offer services to voters and businesses in exchange for political and financial support. Political Machines arose when Europeans‚ farmers‚ and African Americans from the south moved to cities. Urbanization led to new challenges for city government‚ there were demands in city services such as a fire department‚ police‚ sewage‚ transportation and water. Political Machines had a negative
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La Amistad In 1839‚ Africans being carried from Havana‚ Cuba‚ to Puerto Principe‚ Cuba‚ revolted against their captors aboard the ship La Amistad (Spanish for ’friendship’). They were stolen from Africa‚ transported to the Americas‚ and were “passed off” as having been born in Cuba. After the revolt‚ the Africans demanded to be returned home‚ but the ship’s navigator lied to them about their course‚ and sailed them north along the North American coast to Long Island‚ New York. The schooner was subsequently
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Man Man and the Machine “Man‚ “Man‚ biologically considered… … is the most formidable of all the beasts of pray‚ and indeed‚ the only one that preys systematically on its own species” William William James (Memories and Studies) From the aeon of the history‚ we have perceived that man has been developing at jet speed in the fields of science and technology. Man‚ who once lived in the forest‚ in the natural state‚ is now on the cliff of mechanical advancement. The question arises today
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Simple machines are extremely important to everyday life. They make stuff that is normally difficult a piece of cake. There are several types of simple machines. The first simple machine is a lever. A lever consists of a fulcrum‚ load‚ and effort force. A fulcrum is the support. The placing of the fulcrum changes the amount of force and distance it will take in order to move an object. The load is the applied force. The effort force is the force applied on the opposite side of the load
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1. Shangri-La Background: Shangri-La Hotels and Resorts is a deluxe Asian hotel chain‚ founded in 1971 in Singapore by the Malaysian-Chinese tycoon Robert Kuok. The company quickly differentiated itself from the competition and provided distinctive Asian standards of hospitality and service. As of 2006‚ Shangri-La was the largest Asian-based deluxe hotel group in Southeast Asia. The company managed a total of 50 hotels under two brands: the five-star Shangri-La and the four-star Traders- a sister
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Notes on Board Oct. 2‚ 2013 Exam one was returned for student’s review. Listening assignment for this week was distributed and uploaded to mix. Ensemble- usually a small group of performers Polyphonic- The simultaneous sounding of two or more melodies of equal importance. Group Work: Sidney Bechet First notable jazz saxophone player‚ soprano sax Played clarinet‚ too. Composer Professional by age of 6. Louis Armstrong 1901-1971 [Greatest trumpet player] The most influential jazz
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character made by a Japanese cartoonist. Doraemon is a robot comes from the future and has many great machines with various wonderful functions in his pocket. As an ordinary people‚ there are many things I regretted in the past‚ so that I need one of Doraemon’s machines‚ which is called ‘Time Machine’. By using this time machine‚ I can go back to the past to correct my repented mistakes. The time machine does not only function to bring us to the past‚ but it can also bring us to the future. Hence‚ besides
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