Fuels and Combustion The main function of primary air in pulverised coal fired burner is to Have proper combustion by supplying it around the burner Preheat the tertiary air used for complete combustion of CO to CO₂ Burn CO to CO₂ Dry and transport the coal Have proper combustion by supplying it around the burner Preheat the tertiary air used for complete combustion of CO to CO₂ Burn CO to CO₂ Dry and transport the coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke having higher porosity has Lower strength Lower bulk density Higher reactivity All of these Lower strength Lower bulk density Higher reactivity All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. < 37% >71% In between 37 & 71% None of these < 37% >71% In between 37 & 71% None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Air/gas ratio for complete combustion will be the highest for Gobar gas Carburetted water gas LPG Coke oven gas Gobar gas Carburetted water gas LPG Coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass. Density Electrical resistivity None of these Porosity Density Electrical resistivity None of these Porosity ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal All of these Tar yield is less but free carbon in tar is more Coke oven gas yield is more Calorific value of coke oven gas is less All of these Tar yield is less but free carbon in tar is more Coke oven gas yield is more Calorific value of coke oven gas is less ANSWER DOWNLOAD EXAMIANS APP
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