Fuels and Combustion For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ? Sewage gas and gobar gas Propane and LPG Propane and acetylene F. gas and coke oven gas Sewage gas and gobar gas Propane and LPG Propane and acetylene F. gas and coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following petrographic constituents of coal is non-coking? Clarain Fussain Vitrain Durain Clarain Fussain Vitrain Durain ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Ignition temperature Calorific value Type (solid, liquid or gaseous) Sulphur content Ignition temperature Calorific value Type (solid, liquid or gaseous) Sulphur content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of pulverised coal in boiler furnace provides Better combustion Smokeless burning Less erosion on furnace walls High calorific value Better combustion Smokeless burning Less erosion on furnace walls High calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion As the equilibrium moisture content of the coal increases, its Swelling number decreases Calorific value increases Swelling number increases Bulk density decreases Swelling number decreases Calorific value increases Swelling number increases Bulk density decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke compared to the coal from which it has been made, contains Greater percentage of ash All of these More carbon Less volatile matter Greater percentage of ash All of these More carbon Less volatile matter ANSWER DOWNLOAD EXAMIANS APP
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