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 oxygen has been used for combustion 21% excess air has been used for combustion No excess air has been used for combustion Complete combustion of fuel has taken place 21% excess oxygen has been used for combustion 21% excess air has been used for combustion No excess air has been used for combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. 700 to 850 350 to 450 100 to 150 550 to 650 700 to 850 350 to 450 100 to 150 550 to 650 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of coal charge for the coke ovens reduces the Time of carbonisation All of these Yield of gas and tar Fuel consumption in coking Time of carbonisation All of these Yield of gas and tar Fuel consumption in coking ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stack (chimney) height in a big thermal power plant is dictated by the Draught to be created Pollution control aspect None of these Limitation of constructional facilities Draught to be created Pollution control aspect None of these Limitation of constructional facilities ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest calorific value? Anthracite Sub-bituminous coal Peat Lignite Anthracite Sub-bituminous coal Peat Lignite 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 None of these Low High Very high, if the fuel is of low calorific value None of these Low High Very high, if the fuel is of low calorific value ANSWER DOWNLOAD EXAMIANS APP
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