Fuels and Combustion Function of secondary air in pulverised coal firing is to Transport the coal to the burner Ensure efficient burning of coal around the burner Reduce primary air requirement Dry the coal Transport the coal to the burner Ensure efficient burning of coal around the burner Reduce primary air requirement Dry the coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms. 20 to 40 5 to 15 3 to 4 1 to 2 20 to 40 5 to 15 3 to 4 1 to 2 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Advantages of fluidised bed combustion are All of these High heat transfer rate Lower furnace operating temperature Reduced NOx formation in flue gas All of these High heat transfer rate Lower furnace operating temperature Reduced NOx formation in flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas is a better fuel than blast furnace gas, because of its higher Adiabatic flame temperature Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity) All of these Heat release rate (thus requiring smaller combustion chamber) Adiabatic flame temperature Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity) All of these Heat release rate (thus requiring smaller combustion chamber) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called None of these Back draughting Under pressurising Banking None of these Back draughting Under pressurising Banking 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 0 20 10 12.5 0 20 10 12.5 ANSWER DOWNLOAD EXAMIANS APP
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