Fuels and Combustion The calorific value of a gas of composition CO₂ = 20%, H₂ = 50%, CH₄ = 30%, is y. If the composition of gas is changed to H₂ = 50%, CH₄ = 30%, CO₂ = 10%, N₂ = 10%, then the calorifice value will be 1.05 y 1.8 y Y 0.95 y 1.05 y 1.8 y Y 0.95 y ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A particular coal is said to be free burning when it Shows little or no fusing action Burns completely None of these Gives smokeless burning Shows little or no fusing action Burns completely None of these Gives smokeless burning ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO₂, 20%CO and 10%O₂. The percent excess oxygen used is 10 20 0 12.5 10 20 0 12.5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the least calorific value (kcal/Nm³) ? Natural gas Coke oven gas Blast furnace gas Sewage gas Natural gas Coke oven gas Blast furnace gas Sewage gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the Steel ladle drying Mixing with blast furnace gas Coke oven battery heating Hot scarfing of steel slabs Steel ladle drying Mixing with blast furnace gas Coke oven battery heating Hot scarfing of steel slabs ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature in air as compared to that in pure oxygen is Much higher Same Much lower Either lower or higher, depends on the type of fuel Much higher Same Much lower Either lower or higher, depends on the type of fuel ANSWER DOWNLOAD EXAMIANS APP
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