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    dc machines

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    Electrical Machines Electrical Machine Stationary Transformer Rotating DC AC Motor Induction Generator Motor Generator Synchronous Motor Generator Electrical Generator / Motors  An electric generator converts mechanical energy into electrical energy.  An electric motor converts electrical energy into mechanical energy. Mechanical Input Electrical input ELECTRICAL MACHINES Generator ELECTRICAL MACHINES Motor Electrical Output Mechanical output

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    Sop for Ms in Electrical

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    “I believe secret of success lies in Knowledge and Hard work. “Just because something is DIFFICULT doesn’t mean we shouldn’t try it. Difficulty is only a challenge; it should motivate us to try HARDER”. Even IMPOSSIBLE says I AM POSSIBLE”. I know it is not easy to get admission in your university but that doesn’t deter me from working hard towards this goal and giving it my best try. ‘We live only once‚ but if we live right‚ once is enough’ the same truth applies to one’s career decision because

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    lightning properties

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    Lightning is not distributed evenly around the planet‚ as seen in the image on the right. About 70% of lightning occurs over land in the tropics where atmospheric convection is the greatest. This occurs from both the mixture of warmer and colder air masses‚ as well as differences in moisture concentrations‚ and it generally happens at the boundaries between them. The flow of warm ocean currents past drier land masses‚ such as the Gulf Stream‚ partially explains the elevated frequency of lightning

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    Software metrics are meant to be measures in the scientific sense of the term‚ with the goal of giving objective views on software related objects and phenomena. The well known problem of software development is that there is very little scientific foundation to the subject. Electrical engineers can use physics as the foundation of their activities. As a result the measures they use in their daily work‚ such as Volt and Ampere‚ correspond to well defined phenomena (electric potential‚ electric

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    Coulomb's Law

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    COULOMB’S LAW INTRODUCTION The magnitude of the force of attraction or repulsion between two electric charges at rest was studied by Charles Coulomb. He formulated a law‚ known as "COULOMB’S LAW". STATEMENT   According to Coulomb’s law: The electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of charges. The electrostatic force of attraction or repulsion between two point charges is inversely proportional to the square of

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    Abstract-In this we use a piezoelectric crystal which gives variable voltage output depending upon the vibrations given on the crystal surface. This voltage is converted to current using suitable converter. Now the current is passed through a memristor‚ which has a corresponding resistance value. Whenever the current increases‚ the resistance value increases and the change in resistance is detected using a microwave generator connected at the end. Using the microwave level‚ an external device (similar

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    5 Fly By Wire Architecture 5.1 Introduction • The total elimination of all the complex mechanical control runs and linkages all commands and signals are transmitted electrically along wires‚ hence the name fly-by-wire. • The interposition of a computer between the pilot’s commands and the control surfaces actuators. • The aircraft motion sensors which feedback the components of the aircraft’s angular and linear motion of the computer. • The air data sensors which supply height and airspeed information

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    Quiz on Power and Torque

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    1. What is a simpler way to expressing 0.000 018 A? 2. What is a simpler way to expressing 5 000 000 V? 3. An electric motor is developing 8.5kW at a speed of 900r/min. Calculate the torque available at the shaft. 4. A generating station has a daily output of 160MW h and uses 300 t (tones) of coal in the process. The coal releases 7 MJ/kg when burnt. Calculate the overall efficiency of the station. 5. A lift of 250 kg mass is raised with a velocity of 6 m/s. If the driving motor has an efficiency

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    1. B‚C 2. A‚B 3. A‚C 4. B 5. A‚B 6. B 7. A‚B 8. C 9. A 10. C 11. C 12. D 13. A‚D 14. C 15. A‚B 16. B 17. B 18. A‚D 19. C 20. B‚C‚D Key Terms: Electrical circuit - an electrical device that provides a path for electrical current to flow. Frequency - The cycles per second of alternating current‚ measured in Hertz. Amplitude - The maximum difference of an alternating electric current or potential from the average value. Phase - Is a position of a point in time on a waveform

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    Global TIM Market 2014-20180280035TIM are materials used for supporting the heat sink in removing the heat from the heat source in various equipment. They are generally used in the form of a secondary thermally conductive material to replace the thermally-insulating air between the two surfaces. Besides helping in the efficient transfer of heat‚ TIM also act as adhesives and strengthen the mechanical link between surfaces. Polymer-based TIM‚ metal-based TIM‚ and PCTIM are the basic types of TIM commercially

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