Mechanical comparators are one form of linear measurement device which is quick and more convenient for checking large number of identical dimensions. Comparators normally will not show the actual dimensions of the work piece. They will be shown only the deviation in size, during the measurement, a comparator is able to give the deviation of
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In this type of stoker, the fuel and air move in the same direction. In this type of stokers, the air entering the holes in the grate comes in contact with the raw coal. Then the air is mixed with formed volatile matter and passed through the ignition and then entered into the region of
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In case of overfeed stokers, the coal is fed on the grate above the point of air admission. Working principle : In this type of fuel firing, the primary air enters the grate from the bottom. The air passing through the grate is heated by absorbing the heat from the ash and grates itself. So,
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When the plaintiff by his own want of care contributes to the damage caused by the negligence or wrongful conduct of the defendant, he is considered to be guilty of contributory negligence. An accident would be said to be the result of contributory negligence if “the proximate cause of the accident is the act or
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Petrol vapours from fuel tank escape into atmosphere by evaporation (or breathing). This vapour comes out through filter cap vent or the tank vent tube. When the engine is not running, petrol will evaporative emission control system leak in the carburettor float chamber. It is estimated that the losses from the fuel tank are about
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Excessive nitrogen oxides (NO2) form when peak combustion temperature exceeds 1950°C. To lower the combustion temperature, many engines have EGR system. It recirculates about 10% of the inert gas back into the intake manifold The cooler exhaust gas absorbs heat from the much hotter combustion process. It reduces peak combustion temperature and lowers the formation
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Air pollution and its control I.C engines convert heat energy into mechanical energy by burning the fuel in its combustion chamber called cylinder. Mostly, petrol and diesel oil are used as fuels for I.C engines. These fuels contain hydrogen and carbon in various combinations. During combustion, oxygen combines with hydrogen and carbon to form Water
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Detonation in S.I Engines: If the temperature of an air fuel mixture is raised high enough, the mixture will self ignite without the need of a spark plug Knocking or detonation in S.I engines. This phenomenon is called as self ignition or Auto ignition. The temperature above which self ignition occurs called the self ignition
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The coal preparation includes sizing, removal of rock originating from mine roof, removal of ash forming and sulphur bearing minerals, drying to remove excessive surface moisture and blending of different coals to achieve desired physical and chemical properties. The fig. shows the flow diagram of coal preparation plants. The coal cleaning equipment is relied on
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In the law of professional negligence, are such as lawyers, doctors, architects. In the category are persons professing some special skill. Any task which is required to be performed with a special skill would generally be admitted or undertaken to be performed only if the person possesses the requisite skill for performing that task. The
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