Fuels and Combustion Higher efficiency in the combustion of solid fuel can not be achieved by Supplying correct quantity of combustion air Adopting efficient-fuel firing technique & equipment Keeping the flue gas exhaust temperature very high Proper fuel preparation Supplying correct quantity of combustion air Adopting efficient-fuel firing technique & equipment Keeping the flue gas exhaust temperature very high Proper fuel preparation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Sulphur content Ignition temperature Calorific value Type (solid, liquid or gaseous) Sulphur content Ignition temperature Calorific value Type (solid, liquid or gaseous) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be Very high, if the fuel is of low calorific value Low None of these High Very high, if the fuel is of low calorific value Low None of these High ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion As the equilibrium moisture content of the coal increases, its Swelling number increases Calorific value increases Swelling number decreases Bulk density decreases Swelling number increases Calorific value increases Swelling number decreases Bulk density decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest heat of combustion? CH₄ C₂H₆ CO H₂ CH₄ C₂H₆ CO H₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke compared to the coal from which it has been made, contains Greater percentage of ash More carbon Less volatile matter All of these Greater percentage of ash More carbon Less volatile matter All of these ANSWER DOWNLOAD EXAMIANS APP
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