Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? Thick fire bed and preheated primary air All of these Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature Thick fire bed and preheated primary air All of these Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of coke oven gas is around __________ Kcal/Nm³. 4200 2000 900 7500 4200 2000 900 7500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel consumption in coke making can be reduced by Dry quenching of coke Preheating, blending and de-ashing the coal All of these Stamped charging of coal Dry quenching of coke Preheating, blending and de-ashing the coal All of these Stamped charging of coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For maximum discharge through a chimney, its height should be More than 105.7 metres 200 meters Infinitely long Equal to the height of the hot gas column producing draught More than 105.7 metres 200 meters Infinitely long Equal to the height of the hot gas column producing draught 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 Is less liable to spontaneous combustion on storage None of these Requires smaller combustion space and less secondary air Is more difficult to ignite and produces a shorter flame Is less liable to spontaneous combustion on storage None of these Requires smaller combustion space and less secondary air Is more difficult to ignite and produces a shorter flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gobar gas is produced by the __________ of cown dung. Oxidation Hydrogenation Fermentation None of these Oxidation Hydrogenation Fermentation None of these ANSWER DOWNLOAD EXAMIANS APP
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