Fuels and Combustion Which of the following accounts for maximum energy loss in a boiler? Incomplete combustion Unburnt carbon in flue gases Flue gases Ash content in the fuel Incomplete combustion Unburnt carbon in flue gases Flue gases Ash content in the fuel 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 Low Very high, if the fuel is of low calorific value None of these High Low Very high, if the fuel is of low calorific value None of these High ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during Combustion of fire slacks on the grates None of these Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) Combustion of fire slacks on the grates None of these Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation of coal resulting from bad storage conditions does not decrease its Hydrogen content Caking power Calorific value Oxygen content Hydrogen content Caking power Calorific value Oxygen content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The reaction, C + CO₂ ⟷ 2CO, taking place during coal gasification is called the __________ reaction. n. Neumann reversal Boudouard Shift conversion Reduction Neumann reversal Boudouard Shift conversion Reduction ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen. 1kg mole All of these 22.4 Nm³ 32 kg 1kg mole All of these 22.4 Nm³ 32 kg ANSWER DOWNLOAD EXAMIANS APP
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