Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Sulphur content Ignition temperature Type (solid, liquid or gaseous) Calorific value Sulphur content Ignition temperature Type (solid, liquid or gaseous) Calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest gross calorific value? Oil refinery gas Carburetted water gas Blast furnace gas Coke oven gas Oil refinery gas Carburetted water gas Blast furnace gas Coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum percentage of CO₂ in a flue gas (from a carbonaceous fuel) can be 79 29 21 77 79 29 21 77 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher efficiency in the combustion of solid fuel can not be achieved by Supplying correct quantity of combustion air Proper fuel preparation Keeping the flue gas exhaust temperature very high Adopting efficient-fuel firing technique & equipment Supplying correct quantity of combustion air Proper fuel preparation Keeping the flue gas exhaust temperature very high Adopting efficient-fuel firing technique & equipment ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of __________ in a dry gaseous fuel does not contribute to its calorific value. Carbon Hydrogen Sulphur Oxygen Carbon Hydrogen Sulphur Oxygen ANSWER DOWNLOAD EXAMIANS APP
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 Y 0.95 y 1.8 y 1.05 y Y 0.95 y 1.8 y 1.05 y ANSWER DOWNLOAD EXAMIANS APP
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