Yuling CAO S3445024 ABSTRACT In this paper‚ structure of electric vehicles is initially reviewed. Then electric vehicles propulsion system which consists of energy storage system‚ power electronic system and electric motor is reviewed in detail. Besides‚ performance of electric vehicles and advantages and disadvantages of this technology are also discussed. Key words: propulsion system‚ battery‚ converter/inverter‚ motor‚ battery. INTRODUCTION The review is finished through searching various scholarly
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Physics Stage 6 – Yr 12 Notes 9.2 Space: Context 1 – The Earth has a gravitational field that exerts a force on objects both on it and around it. Define weight as the force on an object due to a gravitational field Mass (m): • The amount of matter in a body • Constant anywhere in the universe • Scalar quantity • Measured in Kilograms (Kg) Weight (W): • The force acting on an object due to a gravitational field • Attractive force • Vector quantity
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MAGNETIC LEVITATION AND TRAINS BY: MANISH KUMAR 2K12/EE/075 Delhi Technological University INTRODUCTION MAGLEV = MAGNETIC + LEVITATION Magnetic means “based on magnets” Levitation means “to rise and float in air” Maglev is a method of propulsion that uses magnetic levitation to propel vehicles with magnets rather than with wheels that the conventional trains use. Magnetic levitation is the use of magnetic fields to levitate a (usually) metallic object. Manipulating magnetic fields and
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The Science of Transportation: Ancient World: The Wheel: • How do they work? Wheels work by rolling along a surface. The curved surface of the wheel reduces the friction between the two surfaces due to a decrease in surface area. With less friction it is much easier to move an object. This is because rolling friction is much weaker than sliding friction. • How did they come to be? The wheel was invented in prehistoric times; as the oldest example of a wheel yet found is from the region of
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not completely eradicated because of its content of 90 percent gasoline and 10 percent ethanol. The use of corn as fuel interferes with the food chain as more arable farm land is required to produce enough corn. Moreover‚ the cost of corn will sky rocket as a result‚ if billions of cars are converted to run only on this type of fuel. Environmental Protection Agency (EPA) declared that ethanol blend with gasoline can lower carbon monoxide emissions to 40 percent and nitrous oxides to 15 percent. In
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What is so super about superconductors? Perhaps the fact that superconductors are materials that have no resistance to the flow of electricity. So they basically will conduct electricity without resistance when the material is at a very cool temperature. Resistance becomes undesirable because it produces losses in the energy flowing through the material. Resistance creates heat which is why‚ when the material is cooled‚ the resistance will no longer be an included factor in the flow of electricity
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scale magnetic levitating train model using Inductrack technology developed by Dr. Richard Post from Lawrence Livermore National Labs‚ Previous work by Paul Friend is discussed as well as the physics associated with Inductrack. The levitation and propulsion systems built in lab is described. The conclusion includes the results and suggestions for future work on the maglev train. 2 Table of Contents Project Summary ............................................................................
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fastest stroke competitively‚ originated from an old english style of swimming backstrokeand has developed over the years and has evolved into an alternating and more effective action. This action givesthe backstroke less resistance with a continuous propulsion. The speed of the backstroke is limited by the restrictiverange of movement of the shoulders as well as the ability/inability to use the power in the chest muscles to thebest desired effect by the roll of the body which will be discussed in more
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When you hear the word “mad scientist” you perceive an aggressive‚ eccentric‚ awkward and intellectual individual that works with fictional equipment in order to initiate their intelligible schemes. On the other hand‚ they fail to recognize the evil that will stream from the hubris of “playing god”. A majority of the time these “mad scientists” are individuals who value their experiments and scientific curiosity over themselves‚ others and the world. The literature works‚ The Birthmark‚ Rappaccini’s
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Reasons for space exploration Past reasons for space exploration -natural curiosity about what’s out there and wanting scientific answers. - at one point the USA and Russia were competing for who could accomplish whatever first. - to find ways to destroy asteroids which could be a problem to our safety. Present reasons for space exploration - many things we find in space‚ learn us more about Earth (ex: planetary atmospheres‚ comets and the early earth‚ the Sun and it’s influence on climate)
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