Fuels and Combustion Combustion of pulverised coal as compared to that of lump coal Develops a low temperature flame Can be done with less excess air Develops a non-luminous flame Provides a lower rate of heat release Develops a low temperature flame Can be done with less excess air Develops a non-luminous flame Provides a lower rate of heat release ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Froth floatation is used for Removing ash from the coal based on difference in specific gravity of coal and ash All of these Washing lump coal (> 80 mm size) Washing fine coal dust (< 0.5 mm size) Removing ash from the coal based on difference in specific gravity of coal and ash All of these Washing lump coal (> 80 mm size) Washing fine coal dust (< 0.5 mm size) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of excess of combustion air in the combustion of fuels results in Heat losses None of these Long flame Condensation of water vapour from the fuel gas Heat losses None of these Long flame Condensation of water vapour from the fuel gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation of coal is accelerated by the All of these Storage in large heaps Absence of porous or friable particles Storage in compressed piles All of these Storage in large heaps Absence of porous or friable particles Storage in compressed piles ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.) GCV at constant pressure NCV at constant volume NCV at constant pressure GCV at constant volume GCV at constant pressure NCV at constant volume NCV at constant pressure GCV at constant volume ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pulverised coal used in boiler firing need not have High bulk density Less moisture content High fusion point of its ash Lower ash content High bulk density Less moisture content High fusion point of its ash Lower ash content ANSWER DOWNLOAD EXAMIANS APP
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