Chapter (11) Synchronous Motors Introduction It may be recalled that a d.c. generator can be run as a d.c. motor. In like manner‚ an alternator may operate as a motor by connecting its armature winding to a 3-phase supply. It is then called a synchronous motor. As the name implies‚ a synchronous motor runs at synchronous speed (Ns = 120f/P) i.e.‚ in synchronism with the revolving field produced by the 3-phase supply. The speed of rotation is‚ therefore‚ tied to the frequency of the source. Since
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General Motors Analysis General Motors (GM) is a United States car manufacturer that was founded by William C. Durant in Flint‚ Michigan dating back to 1908. GM headquarters is located in Detroit‚ Michigan and is among one of the world’s largest automakers‚ conducting business in over one hundred and twenty countries with production facilities in thirty-seven of those. GM dominated the automaker industry for over seventy-seven years (1913-2007) through ownership of over twenty-five different companies
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studies have been performed to address the impact of mandatory rotation of audit firms to ensure the appropriate level of independence ’ of auditors. Majority of studies conclude that the detrimental effects of firm rotation on the quality of the audit work by far outweigh its positive effects as a safeguard against various independence and quality threats. Frequent changes of audit firms‚ whether resulting from mandatory rotation or otherwise‚ introduce threats to independence and operational
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AC Generators and Motors Course No: E03-008 Credit: 3 PDH A. Bhatia Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com CHAPTER 3 ALTERNATING CURRENT GENERATORS LEARNING OBJECTIVES Upon completion of this chapter‚ you will be able to: 1. Describe the principle of magnetic induction as it applies to ac generators. 2. Describe the differences between the two basic types of ac generators. 3. List the
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analysis of multiplication of sine and cosine signals. A SPICE simulation is used to illustrate QPSK modulation of a 1MHz sine wave. A phasor diagram shows the impact of poor synchronization with the local oscillator. Digital processing is used to remove phase and frequency errors. Since the early days of electronics‚ as advances in technology were taking place‚ the boundaries of both local and global communication began eroding‚ resulting in a world that is smaller and hence more easily accessible for the
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HERO HONDA SPLIT A joint venture between the Hero Group and Honda Motor Company was established in 1984 as the Hero Honda Motors Limited At Dharuhera India. Hero is the brand name used by the Munjal brothers for their flagship company Hero Cycles Ltd. Munjal family and Honda group both own 26% stake in the Company. However the Hero Honda group is set for a split in the end of 2010. After the split the Munjal family will buy Honda Motor’s 26% stake for around $1 billion‚ or a little less than half
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Not Enough Time Illustrative English 1301 Judith Bateman There is not enough time My life as a student can be hectic trying to balance sports clubs and homework in a small amount of time. I can push my self to extremes some times because of my schedule My teacher Mrs. Quattlebaum can also have trouble balancing her schedule between her grades and kids. She may think she can squeeze in a few extra things but it can be very tricky. My dad
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Job Rotation Programs Pamela Robinson-Smith Walsh College Human Resource Management 555 February 29‚ 2012 Introduction Job rotation programs are very enriching but require much energy from both the company implementing the program as well as the employees. Job rotation is the systematic movement of employees from job to job within an organization. Job rotation is a systematic career development strategy that moves employees laterally and offers customized assignments for specialized
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Mental Rotation Lab Report: PSY 405 – Spring 2012 Deng Jichun Introduction The purpose of this experiment was to confirm the theory that we create picturelike representation of perceived visual stimuli‚ and we can also mentally rotate the representation to a known “upright” position. The reaction time increases linearly according to the angle of the rotation‚ regardless of their complexity (Cooper‚ 1975). In some circumstances‚ we snap the perceived visual stimuli and create
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indeed a great honor for me to stand here today to deliver my talk. Before I begin my talk‚ may I ask you people to do me a favor? It’s pretty simple; just try to view this situation as though as it’s a picture. Tell me‚ what would you say from it? Exactly! You see a rather decent looking boy standing here trying to overcome his fear and deliver a talk. And behind me you see the theme of the talk today – words are not enough. Ladies and gentlemen‚ through merely a picture‚ such adequate amount of data
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