Fuels and Combustion Ignition temperature decreases progressively from anthracite to lignite, because Volatile matter content increases Ash content increases Moisture content increases Carbon content decreases Volatile matter content increases Ash content increases Moisture content increases Carbon content decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will Decrease Increase or decrease depending on the fuel type Not change Increase Decrease Increase or decrease depending on the fuel type Not change Increase ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gobar gas is produced by the __________ of 'gobar' (cow dung). Hydrolysis Fermentation Oxidation Dehydration Hydrolysis Fermentation Oxidation Dehydration ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The difference between total carbon and fixed carbon of coal will be minimum in case of Bituminous coal High temperature coke (V.M < 0.5%) Anthracite Lignite Bituminous coal High temperature coke (V.M < 0.5%) Anthracite Lignite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Softening temperature of coal ash is a measure of the __________ of coal. Size stability Clinkering tendency Coking tendency Caking tendency Size stability Clinkering tendency Coking tendency Caking tendency ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Initial pressure of oxygen introduced into the 'bomb' of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around __________ atm. 25-30 3-5 95-100 60-65 25-30 3-5 95-100 60-65 ANSWER DOWNLOAD EXAMIANS APP
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