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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Ward-Leonard Motor Generation System Introduction: A control system generally controls‚ regulates‚ and updates its output continuously based on present inputs‚ nature of the system‚ and the past outputs. In other words‚ there is a feedback mechanism that is inherent in the system‚ and is called a closed loop control system. For example‚ adding an emitter resistance to a common emitter amplifier‚ results in a negative feedback mechanism in the amplifier system – if the output current increases
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consuming the proper amount of calories to energy expenditure. Conversely‚ the quality of the calories consumed drastically alters the end result. For example‚ consuming excess sugar with limited fiber leads to the creation of fat. The directors of Fed Up raise awareness of the many other issues contributing to the extreme weight gain among individuals. Approximately fifty years ago tobacco companies started participating in lobbying to disguise the harmful effects of their product; food corporations
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Tesla motors has taken a different approach in EV technology and I think its paying off. Though the challenges from the establish competition would be thrown in coming years and to maintain the differentiation would be tough which will reduce the capability to charge the premiums‚ hence the scale needs to be achieved for sustainability; the mass adoptability of EV would be the key and for that the Auto manufacturers needs to work hard under the federal support. Tesla Motors has positioned
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Report on DC COMICS for Business Studies Introduction DC comics incorporated is a leading pioneer and one of the most successful enterprise in the American comic books and many related media industries (comic books‚ movies‚ games and etcetera) . Founded by Malcolm Wheeler Nicholson in 1934‚ it was originally known as ’National Allied Publication’ the initials ’DC’ was taken from the popular series ’Detective Comics’ which subsequently became part of the company’s name. DC comics is
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Tesla Motors Table of Contents Executive Summary 3 1. Introduction Chapter 4 2. Motivation 4 3. Research question and Sub questions 4 4. Interpretation 4 5. Scope/Delimitation 5 6. Methodology 6 6.1 Project type 6 6.2 Method 7 6.3 Theories and models used 7 6.4 Data collection 10 6.5 Structure 11 6.6 Critisium sources 11 7. Analysis 12 Part 1 12 7.1 Sub question 1 12 7.2 Sub question
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1-Determine how each corporate culture differs from the other. The two companies I have decided to discuss in this term paper is Federal Express (Fed Ex) and United Parcel Service (UPS). Both of these companies are logistic companies which specialize in delivering freight‚ cargo‚ and shipping services. Both of these companies cater to customers by making door to door deliveries locally and internationally. Both companies have both ground and air shipments but their prices do vary. UPS on the
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TATA MOTORS I. INTRODUCTION Tata Group is an Indian multinational company headquartered MUMBAI‚ MAHARASHTRA‚ INDIA. Tata group business is spread across 7 sectors their main sector being steels. Their empire is spread across 6 continents and has its presence in 80 nations. The combined market capitalization of all the 31 listed Tata companies was $89.88 billion as of March 2012.Tata group gets its major revenue from overseas market contributing 58%. Tata Motors Limited is an Indian multinational
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and started DC short for Detective Comics their Characters with the ultimate power and the greatest advantages. Marvel’s characters were humans use their mind and brain to stop crime while DC have heroes who are almost unstoppable. Here are some quotes to back my reasons for saying Marvel is better.“However‚ to Marvel’s credit‚ they do have superior sales at present (mostly because of X-Men and Spiderman). The Marvel Cinematic Universe is also doing great. However‚ one shouldn’t write DC off before
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ELECTRIC MOTOR CONTROLS Once the proper motor is selected‚ understanding the many various control devices available and their uses and limitations becomes an important part related to reliable operation and protection of the motor and the personnel using the motor. Motor Control Topics There are four major motor control topics or categories to consider. Each of these has several subcategories and sometimes the subcategories overlap to some extent. Certain pieces of motor control equipment can accomplish
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