Fuels and Combustion A carbonaceous fuel (containing no H₂ or hydrocarbons) is burnt and the resulting flue gas contains 21% CO₂. It means that Complete combustion of fuel has taken place 21% excess air has been used for combustion 21% excess oxygen has been used for combustion No excess air has been used for combustion Complete combustion of fuel has taken place 21% excess air has been used for combustion 21% excess oxygen has been used for combustion No excess air has been used for combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion 'Fat coals' are those coals which have very high Inherent moisture content Fusion point of its ash Volatile matter content Caking capacity Inherent moisture content Fusion point of its ash Volatile matter content Caking capacity ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the least calorific value (kcal/Nm³) ? Blast furnace gas Natural gas Coke oven gas Sewage gas Blast furnace gas Natural gas Coke oven gas Sewage gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Advantages of fluidised bed combustion are Lower furnace operating temperature High heat transfer rate All of these Reduced NOx formation in flue gas Lower furnace operating temperature High heat transfer rate All of these Reduced NOx formation in flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke compared to the coal from which it has been made, contains Less volatile matter Greater percentage of ash All of these More carbon Less volatile matter Greater percentage of ash All of these More carbon ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Combustion of pulverised coal as compared to that of lump coal Can be done with less excess air Develops a low temperature flame Develops a non-luminous flame Provides a lower rate of heat release Can be done with less excess air Develops a low temperature flame Develops a non-luminous flame Provides a lower rate of heat release ANSWER DOWNLOAD EXAMIANS APP
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