Technology and Science Science and technology have much in common but they are not exactly the same thing. Science deals with the natural world and how it works. It is the understanding of our environment and how it works. It is also the study of the laws that govern our universe. Technology on the other hand deals with the human made world. In other words it is applied science to everyday life. It is the study of ways people develop and use technical means. Tools and machines are examples
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because their fuel can be harnessed from any source of electricity‚ which is available in most homes and businesses ~ the electricity created by electric cars is created by the burning of fossil fuels at power plants‚ instead of in an internal-combustion engine which pollutes the air. ~ the only new system required for electric cars is one that charges the batteries‚ and major automakers are working on creating a standard system for battery charging ~ electric cars change the chemical composition
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treating metals‚ producing fertilizer‚ and processing foods. Hydrogen has been used for space flight since the 1950s. Learn more about hydrogen and fuel cells from the National Aeronautics and Space Administration. Hydrogen also can be used to fuel internal combustion engines and fuel cells‚ both of which can power zero to nearzeroemissions vehicles‚ such as hydrogen fuel cell vehicles. Major research and development efforts are aimed at making hydrogen fuel cell vehicles practical for widespread use. Additionally
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Hybrid Cars Hybrid cars which use at least two form of onboard energy to get impulse are popular subject because of decreasing oil sources. A hybrid car has a traditional internal combustion engine and fuel tank as well as one or more electric motors and a battery pack. There is a problem that it will be affect the transportation in the future. Nowadays‚ most of people have cars which use oil as fuel. This situation has been causing to used up oil sources. Hence people are looking for different
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AQUA SILENCER SYNOPSIS Diesel power invitably finds a very important role in the development of the plant’s economy and technical growth. Inspite of their high thermal efficiency‚ one cannot ignore the fact about the effect of their exhaust‚ in the atmosphere. It is a well-known fact that the toxic gases emitted in diesel engines are less than the engines. Due to high cost of petrol‚ diesel engines are more in use. Anticipating the use of diesel engines‚ even more in the near future; this system
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conceptual design‚ analysis and testing of a camless engine (CLE) with an electro hydraulic valve train. The system makes use of a piezoelectric controlled hydraulic actuator. This actuator serves as a replacement for the camshaft in an internal combustion engine (ICE). In essence‚ the actuator is an electro hydraulic device capable of producing engine valve displacement at typical automotive demands. The goals for maximum displacement and frequency are 10 mm and 50 Hz‚ respectively for a typical
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Alternative Fuels for Cars Automobiles are considered one of the largest contributors to climate change – only preceded by the effect of fossil fuel power generation plants [1]. This means that the automobile industry is under a lot of pressure to cut down on carbon emissions globally by finding alternative fuels for cars. Moreover‚ as we approach peak oil [2]‚ the availability of conventional automobile fuels will reduce drastically causing an exponential rise in fuel prices [2]‚ a fact that
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Statistics -Air pollution has caused the quality of air to become unhealthy -Sixty percent of americans live in unhealthy air pollution levels -Vehicles in transportation cause air pollution from combustion engine exhaust. Examples of these vehicles are cars‚ trucks‚ jets‚ and air planes. -One of the worst places with air pollution is Los Angeles‚ California -Air pollution is all around the world -Power lines and their high voltage cause air pollution -Pesticides used to kill pests cause
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Applied Heat past Examination Questions 1. An Ammonia refrigerator is to produce 2 tonne of ice per day at -4°C from water at 20°C. if the temperature range in the compressor is between 25°C and -6°C‚ Calculate horse power required to derive the compressor. Latent Heat of ice = 80 kcal/kg‚ and specific heat of ice= 0.5 2. A compressor draws 42.5 m3 of air per minute in the cylinder‚ at a pressure of 1.05 kg/cm abs. It is compressed Polytropically pV1.3=C to a pressure 4.2
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Mechanisation and Human Life Exercise 1 Mechanisation is providing human operators with machinery that assists them with the muscular requirements of work or displaces muscular work. In some fields‚ mechanization includes the use of hand tools. In modern usage‚ such as in engineering or economics‚ mechanization implies machinery more complex than had tools and would not include simple devices such as an un-geared horse or donkey mill. Automation/Mechanisation has had a notable impact in a wide
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