Fuels and Combustion As the C/H ratio of the fuel increases, the amount of CO₂ formed on combustion __________ for the same percentage of excess air. Increases May increase or decrease depending on the type of fuel Decreases Remains same Increases May increase or decrease depending on the type of fuel Decreases Remains same ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following will generate maximum volume of product of complete combustion (Nm³/Nm³ of fuel) ? Carburetted water gas Natural gas Blast furnace gas Producers Carburetted water gas Natural gas Blast furnace gas Producers ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Percentage of methane in coke oven gas may be around 50 15 25 5 50 15 25 5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal, the Aromatic content of tar produced is more Gas yield is less Ignition temperature of coke produced is less Tar yield is more Aromatic content of tar produced is more Gas yield is less Ignition temperature of coke produced is less Tar yield is more ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly caking coals Produce strong coke Produce weak coke May damage the coke oven walls during carbonisation Both B and C Produce strong coke Produce weak coke May damage the coke oven walls during carbonisation Both B and C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Beehive coke oven Gives larger yield of coke (around 85%) as compared to by-product ovens Facilitates by-products recovery Takes 2-3 days for coking of coal but requires no external fuel for heating Produces coke with very poor strength Gives larger yield of coke (around 85%) as compared to by-product ovens Facilitates by-products recovery Takes 2-3 days for coking of coal but requires no external fuel for heating Produces coke with very poor strength ANSWER DOWNLOAD EXAMIANS APP
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