Fuels and Combustion For maximum discharge through a chimney, its height should be Infinitely long Equal to the height of the hot gas column producing draught 200 meters More than 105.7 metres Infinitely long Equal to the height of the hot gas column producing draught 200 meters More than 105.7 metres ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion C.V. (kcal/Nm³) of gaseous fuels __________ with increase in molecular weight. May increase or decrease, depends on combustibles Increases Remains constant Decreases May increase or decrease, depends on combustibles Increases Remains constant Decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Producer gas containing least amount of tar is produced by the Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) Partial combustion of large size (< 50 mm) coke Partial combustion of coal High pressure gasification of coal (e.g. in Lurgi gasifier) Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) Partial combustion of large size (< 50 mm) coke Partial combustion of coal High pressure gasification of coal (e.g. in Lurgi gasifier) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke made in narrower by-product coke ovens (as compared to wider ovens) is All of these Stronger Less reactive Smaller in size All of these Stronger Less reactive Smaller in size 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 0.95 y 1.05 y Y 1.8 y 0.95 y 1.05 y Y 1.8 y ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Percentage of methane in coke oven gas may be around 50 15 5 25 50 15 5 25 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS