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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Types of DC Motors and DC Generators MOTORS – convert electrical energy to mechanical energy Motors and generators are the most frequent used electrical machines. ❖ Generators action can take place when and only when‚ there is a relative motion between conducting wires and magnetic lines of force. ❖ Electric motor is in operation when it is supplied with electrical energy and develops torque‚ that is‚ a tendency to produce rotation. ❖ In DC generator‚ the armature winding is mechanically
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connected to the alternate voltage supply. 5. The direction of DC motor was tested and determined. 6. All switches were in closed position at initial condition. 7. Only switch 1 and 4 was closed at the first condition as in figure 2(a). The direction of DC motor and the RPM of DC motor was recorded 8. Switch 1 was opened and switch 2 was closed as in figure 2(b) after the first reading was recorded. The motor was braked. The RPM of DC motor was recorded. 9. Step 7 was repeated by switching the switch
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D. C. Polarography * Introduction: - Polarography is a particular case of general electro analytical technique known as voltametry. These methods are used to study the decomposition and quantitative analysis of solution. Principle: - It is a rapid and accurate technique in which electrolysis of experimental solution is carried out by using one electrode of comparatively large surface area (i.e. non-polarisable electrode) and the other electrode having a very small area (polarisable electrode)
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DC-DC Converter Design for Battery-Operated Systems Harry Arbetter. Robert Erickson. and Dragan Maksimovid Power Electronics Group Department of Electrical and Computer Engineering University of Colorado‚ Boulder‚ CO 80309-0425 USA Abstrurt - This paper describes performance‚ design and optimization of de-dc converters for energy limited‚ battery operated systems. Variable-frequency operation is used to achieve voltage regulation and high efficiency for an extremely wide range of load currents
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5 Volt DC Power Supply Rakibul Hassan Department of EEE‚ Ahsanullah University of Science and Technology (AUST)‚ Dhaka‚ Bangladesh. E-mail: rakib_h@y7mail.com Key Words Transformer‚ Rectifier‚ Pulsating DC‚ Ripple voltage‚ Filter‚ Zener diode. Abstract: |Serial No.|Component Details |Specification |Quantity | |1. |Transformer |220V/12V |1 piece | |2. |p-n junction diode |1N4007 |4 piece
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(intel and amd images)Intel vs. Amd The Central Processing Unit or Processor is the most important component of a computer. The two most common types of CPUs on the market today are manufacture by Intel and AMD. Intel is the largest global supplier of microprocessors for the x86 architecture and AMD is the second largest. AMD concentrates primarily on CPUs‚ chipsets‚ and other microprocessors‚ but Intel explores into many other markets including networking technologies‚ motherboards
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Adaptive Control of a Step-Up Full-Bridge DC-DC Converter for Variable Low Input Voltage Applications Elton Pepa Thesis submitted to the faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering Approved: ____________ok_________________ Dr. Jason Lai (Chair) ____________________ Dr. Krishnan Ramu ____________________ Dr. William T. Baumann February 6‚ 2004 Blacksburg
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name of Washington DC and flashes of political leaders‚ congressmen and the White House emerge in front of your eyes. Founded on July 16‚ 1790‚ Washington DC serves as the capital of United States of America and it is here that all the headquarters of all three divisions of the federal government of the United States are sited. Although named after George Washington‚ the first constitutional President of the United States‚ But politics is not the be-all and end-all of Washington DC. A deeper look into
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Washington Dc has a rich history. During world war two‚ the city came under attack‚ and most of its buildings were destroyed. The genesis of Washington architecture started with the McMillan plans which helped to restore downtown Washington and elect new buildings. Charles L’Enfant is a French engineer who was appointed by President George Washington to come up with new plans for the new city. Today‚ Washington dc is a force to reckon within the architectural domain. Washington is a combination of
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