Fuels and Combustion Calorific value of gobar gas (containing CH₄ = 60% , H₂ = 10% ; CO₂ = 30%) may be about __________ Kcal/Nm³. 5400 10200 1800 3200 5400 10200 1800 3200 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bulk density of pulverised coal may be about __________ kg/m³. 1500 1000 500 100 1500 1000 500 100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The difference between total carbon and fixed carbon of coal will be minimum in case of Lignite Bituminous coal Anthracite High temperature coke (V.M < 0.5%) Lignite Bituminous coal Anthracite High temperature coke (V.M < 0.5%) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The gasification reaction represented by, C + H₂O = CO + H₂, is Exothermic Autocatalytic Catalytic Endothermic Exothermic Autocatalytic Catalytic Endothermic ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature? Calorific value of the fuel Speed of combustion of fuel Heat transfer rate to the stock in the furnace Flame temperature achieved Calorific value of the fuel Speed of combustion of fuel Heat transfer rate to the stock in the furnace Flame temperature achieved ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon Requires smaller combustion space and less secondary air Is more difficult to ignite and produces a shorter flame None of these Is less liable to spontaneous combustion on storage Requires smaller combustion space and less secondary air Is more difficult to ignite and produces a shorter flame None of these Is less liable to spontaneous combustion on storage ANSWER DOWNLOAD EXAMIANS APP
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