Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Calorific value of the coal increases High rank coals have higher amount of volatile matter Ratio of fixed carbon to volatile matter increases Oxygen content progressively decreases Calorific value of the coal increases High rank coals have higher amount of volatile matter Ratio of fixed carbon to volatile matter increases Oxygen content progressively decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The advantage of firing pulverised coal in the furnace lies in the fact, that it Permits the use of high ash content coal Permits the use of low fusion point ash coal All of these Accelerates the burning rate and economises on fuel combustion Permits the use of high ash content coal Permits the use of low fusion point ash coal All of these Accelerates the burning rate and economises on fuel combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High amount of sulphur and phosphorous in coke causes Decrease in its calorific value Brittleness of steel made by using it Increase in its strength None of these Decrease in its calorific value Brittleness of steel made by using it Increase in its strength None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gobar gas constitutes mainly of CH₄ & CO₂ CH₄ & N₂ CO & N₂ CO & CO₂ CH₄ & CO₂ CH₄ & N₂ CO & N₂ CO & CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a poisonous fuel gas? Natural gas None of these Blast furnace gas Coke oven gas Natural gas None of these Blast furnace gas Coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion One kg of carbon for theoretically complete combustion requires __________ kg of air. 23 11.5 12 0.5 23 11.5 12 0.5 ANSWER DOWNLOAD EXAMIANS APP
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