ACKNOWLEDGEMENT It gives us great pleasure when a certain task is accomplished with great zeal and enthusiasm. We would like to extend our heartfelt thanks and deep sense of gratitude to all those who helped us in completing this project. First and foremost‚ we feel greatly indebted to Mr. D. M. SINGH and Mr. UBAID AHMAD KHAN‚ from the core of our heart for their constant support and valuable guidance time to time‚ because they encouraged and
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Compiled By: Mirza Rohail B http://economicpakistan.wordpress.com/2008/02/06/textile-industry/ Historically‚ Pakistan’s textile industry and clothing sector has always been a major contributor to the foreign exchange earner and still contributes about 55% to the total export proceeds. The Economist reports that Pakistan is the 4th largest producer of cotton in the world and the 6th largest importer of raw cotton‚ the 3rd largest consumer of cotton‚ and the 1st largest exporter of cotton
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certainly a better need to have for a magnetic motor vitality. The standard ways that the energy produced from magnet is significantly far more cost effective and eco helpful. A magnetic device incorporating the use of permanent magnet turning with a rotor to generate a magnet energy which is then circuited to other mechanism to do so useful work. Magnetic principle can utilize in units of various sizes. Magnetic units can be microscopic or mile wide‚ as long as the correct principle are maintained.
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The speed of an asynchronous motor rotating field and thus its rotor speed depends on the number of pairs of poles in the stator field .the rotor speeds n are lower than the table values by the amount of the relevant slip speed ns. Motors are designed with up to three stators windings‚ which have different number of pairs of poles. They can therefore run at up to pairs of poles. They can be in any desired ratio to one another. A pole-changing switch is used to changing poles for the desires speed
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by overloads on machines (transformers‚ motors or generators). The thermal capacity used is calculated according to a mathematical model which takes into account: Current RMS values Ambient temperature Negative sequence current‚ a cause of motor rotor temperature rise RECLOSER ANSI 79 Automation device used to limit down time after tripping due to transient or semi-permanent faults on overhead lines. The recloser orders automatic reclosing of the breaking device after the time delay required
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turbine engines or as the final compression stage of medium sized gas Diagonal or mixed-flow compressors Diagonal or mixed-flow compressors are similar to centrifugal compressors‚ but have a radial and axial velocity component at the exit from the rotor. The diffuser is often used to turn diagonal flow to the axial direction. The diagonal compressor has a lower diameter diffuser than the equivalent centrifugal compressor. Axial-flow compressors Axial-flow compressors are dynamic rotating compressors
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Application Report SPRA420A - February 2000 Switched Reluctance Motor Control – Basic Operation and Example Using the TMS320F240 Michael T. DiRenzo Digital Signal Processing Solutions ABSTRACT This report describes the basic operation of switched reluctance motors (SRMs) and demonstrates how a TMS320F240 DSP-based SRM drive from Texas Instruments (TI™) can be used to achieve a wide variety of control objectives. The first part of the report offers a detailed review of the operation
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We ended up spending over a thousand dollars on brakes we had remove from the car during the race because the calipers were locking on the top of the rotors. We ended up taking the brakes off of the back wheels. We had to manufacture our own brackets for the brakes so they’d fit on the rotors. After the construction of the car‚ we went to the speedway. Each team had to go through a process called scrutineering. This was where all the judges tested the teams on their
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Alan Turing: Breaking the Enigma Code Steven Go Professor Tobie Tondi Religious Questions of the Holocaust THRS 390 – 01 February 17‚ 2015 YZDS EHVSQM means nothing‚ and remains useless‚ unless one is given the correct code to decrypt the secret message. Perhaps it means “Stop Please” or “Heil Hitler” as the German Nazi’s would always end their secret message when relaying them during World War II. Germans utilized the Enigma machine to scramble and encipher hidden messages to relay
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A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. 1.Steam Turbines 2. Wind Turbines 3. Water Turbines 4. Gas Turbines It is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. The steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency through the use of multiple stages in the expansion of the steam
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