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    Transformers

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    report submitted on: Transformers Class: 12 Submitted to: Mr. Jonny beaver‚ Physics teacher Submitted by: Mohammed Al Khabori 19 February 2011 Theoretical report Transformers I have generated series of questions‚ regarding the transformers‚ which are to be researched and answered. They are the following: * What is the history of transformers? * What is a transformer? * Which principle/laws does the transformer obey? * How can we construct a transformer? * How does a

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    Transformer

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    A transformer is a static machine used for transforming power from one circuit to another without changing frequency. This is very basic definition of transformer. History of Transformer The History of transformer commenced in the year of 1880. In the year of 1950 400KV electrical power transformer first introduced in high voltage electrical power system. In the early 1970s unit rating as large as 1100MVA were produced and 800KV and even higher KV class transformers were manufactured in year

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    Transformers

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    Special Report Transformers Transformers are essential pieces of electrical equipment that help to transmit and distribute electricity efficiently and reliably. They also help maintain power quality and control‚ and facilitate electrical networks. ABB is a global leader in transformer technologies that enable utility and industry customers to improve their energy efficiency while lowering environmental impact. Our key technologies include small‚ medium and large power transformers‚ as well as traction

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    Transformer Metaphor

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    movies‚ and one of the largest joint-military movies is Transformers‚ which was released in 2007. The third series was recently released‚ which is now being processed into a 3D version to be released in the coming months. The movie series includes Transformers (2007)‚ Transformers: Revenge of the Fallen (2009)‚ and Transformers: The Dark of the Moon (2010). All three movies have tapped into the common fear of war‚ because the period of the movie production was during the long war between the US and

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    Transformers Arechetypes

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    Transformers Archetypes Archetypes in the movie Transformers contrast and differ from each other in many ways. The archetypes range from; The Hero‚ to the Devil Figure‚ to many others found in the usual Battle between good and evil Situational Archetypes. Another situational archetype is The Journey‚ which is also used in this movie. These two Situational Archetypes are big key points in discovering what each individual character goes through within the movie. One of the major Archetypes used

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    Transformer and Load

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    Efficiency of transformer at different load conditions: Thus‚ the different losses fall in to two categories Constant losses (mainly voltage dependent) and Variable losses (current dependent). The expression for the efficiency of the transformer operating at a fractional load “x” of its rating‚ at a load power factor of Cosθ2‚ can be written as ……… (1) Here S in the volt ampere rating of the transformer (V2‚ I2 at full load)‚ Pconst being Constant losses and Pvar the variable losses at full load

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    Introduction to Transformers

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    Electrical Q&A Part-3 Questions and Answers related to Transformer: 1. What is a transformer and how does it work? * A transformer is an electrical apparatus designed to convert alternating current from one voltage to another. It can be designed to “step up” or “step down” voltages and works on the magnetic induction principle. * A transformer has no moving parts and is a completely static solid state device‚ which insures‚ under normal operating conditions‚ a long and trouble-free

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    Electric Transformers

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    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 reduce the voltage

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    Three Phase Transformers

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    Three phase transformers are used throughout industry to change values of three-phase voltage and current. Since three-phase power is the most common way in which power is produced‚ transmitted‚ and used‚ an understanding of how three phase transformer connections are made is essential. In this section it will discuss different types of three phase transformers connections. A three-phase transformer is constructed by winding three single-phase transformers on a single core. These transformers are put

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    Optocouplers vs. Pulse Transformers In isolation applications where one needs to pass signals in presence of transient or continuous high voltages‚ reject extreme noise‚ and break ground loops‚ optical (optocouplers) and magnetic (pulse transformers) coupling isolation are often used. However pulse transformers are much more difficult to design with relative to optocouplers. When dealing with pulse transformers‚ the load becomes more critical than with any other type of transformer. Leakage and primary

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