Transformer Introduction The transformer is one of the simplest of electrical devices. Its basic design‚ materials‚ and principles have changed little over the last one hundred years‚ yet transformer designs and materials continue to be improved. Transformers are essential in high voltage power transmission providing an economical means of transmitting power over large distances. The simplicity‚ reliability‚ and economy of conversion of voltages by transformers was the principal factor in the
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Experiment No: 2 Open circuit and short circuit tests on single phase transformer 1 Aim • To understand the basic working principle of a transformer. • To obtain the equivalent circuit parameters from OC and SC tests‚ and to estimate efficiency & regulation at various loads. 2 Theory The physical basis of the transformer is mutual induction between two circuits linked by a common magnetic field. Transformer is required to pass electrical energy from one circuit to another‚ via the medium
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Ques-1: What is a transformer and how does it work? Ans: 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 life. Construction of transformer is very simple‚ two or more coils of insulated
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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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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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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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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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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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inevitable and as bystanders we almost always want to watch the "good guys" win. We choose our sides from what we’ve seen or heard and use our judgment to determine who is good or evil and who we wish to see conquer the other. The feature film Transformers‚ directed by Michael Bay and executive producer Steven Spielberg in 2007 is a science fiction‚ action film that copes with the aspects of good and evil through the Autobots and humans who fight for survival and power against the devious Decepticons
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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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