Fuels and Combustion Higher efficiency in the combustion of solid fuel can not be achieved by Keeping the flue gas exhaust temperature very high Adopting efficient-fuel firing technique & equipment Proper fuel preparation Supplying correct quantity of combustion air Keeping the flue gas exhaust temperature very high Adopting efficient-fuel firing technique & equipment Proper fuel preparation Supplying correct quantity of combustion air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal Coke oven gas yield is more All of these Tar yield is less but free carbon in tar is more Calorific value of coke oven gas is less Coke oven gas yield is more All of these Tar yield is less but free carbon in tar is more Calorific value of coke oven gas is less ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During coking of coal, the ash content (percentage) Decreases None of these Increases Remains constant Decreases None of these Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In Lurgi coal gasifier, Low carbon conversion efficiency is achieved Entrainment of solids is higher Coking coals cannot be used Larger quantity of coal can be processed Low carbon conversion efficiency is achieved Entrainment of solids is higher Coking coals cannot be used Larger quantity of coal can be processed ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Nitrogen in coal Is recovered as ammonia during its carbonisation All of these Comes from protein in parent vegetable matter Is present upto 1-2% Is recovered as ammonia during its carbonisation All of these Comes from protein in parent vegetable matter Is present upto 1-2% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In general, the limit of inflammability/explosion limit of fuel gases is widened by the Use of pure oxygen for combustion instead of air All of these Increase in temperature (i.e. preheating) Increase in gas pressure Use of pure oxygen for combustion instead of air All of these Increase in temperature (i.e. preheating) Increase in gas pressure ANSWER DOWNLOAD EXAMIANS APP
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