Steam Boilers, Engines, Nozzles and Turbines Desecration of feed water is carried out because it reduces pH value of water Corrosion caused by oxygen Heat transfer coefficient Cavitation of boiler feed pumps pH value of water Corrosion caused by oxygen Heat transfer coefficient Cavitation of boiler feed pumps ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The diagram factor is the ratio of the Actual mean effective pressure to the theoretical mean effective pressure Area of the actual indicator diagram to the area of theoretical indicator diagram Any one of the above Actual workdone per stroke to the theoretical workdone per stroke Actual mean effective pressure to the theoretical mean effective pressure Area of the actual indicator diagram to the area of theoretical indicator diagram Any one of the above Actual workdone per stroke to the theoretical workdone per stroke ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The economiser is used in boilers to Economize on fuel Increase flue gas temperature Increase thermal efficiency of boiler Extract heat from the exhaust flue gases Economize on fuel Increase flue gas temperature Increase thermal efficiency of boiler Extract heat from the exhaust flue gases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The proximate analysis of fuel lists Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase Increases/decreases depending on steam temperature requirements Remains unchanged Decreases Increases Increases/decreases depending on steam temperature requirements Remains unchanged Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Stoichiometric quantity of air is the Air required for complete combustion of fuel with no excess air Air present in atmosphere at NTP conditions Air required to convert CO into CO₂ Air required for optimum combustion so as to have reasonable excess air Air required for complete combustion of fuel with no excess air Air present in atmosphere at NTP conditions Air required to convert CO into CO₂ Air required for optimum combustion so as to have reasonable excess air ANSWER DOWNLOAD EXAMIANS APP
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