Fuels and Combustion In high temperature carbonisation of coal compared to low temperature carbonisation Calorific value of the coke oven gas is lower Aromatic content of tar is low H₂ content in the coke oven gas is more Yield of ammonia is less Calorific value of the coke oven gas is lower Aromatic content of tar is low H₂ content in the coke oven gas is more Yield of ammonia is less ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following constituents of coal is the most important in the production of coke? Carbon Volatiles Moisture Ash Carbon Volatiles Moisture Ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High sulphur content in a fuel __________ of the flue gases. Reduces the combustion efficiency by limiting the permissible temperature reduction Increases the dew point Both B & C Decreases the dew point Reduces the combustion efficiency by limiting the permissible temperature reduction Increases the dew point Both B & C Decreases the dew point ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is coking? Both A & B Neither A nor B Vitrain Fussain Both A & B Neither A nor B Vitrain Fussain ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent. 96 40 4 20 96 40 4 20 ANSWER DOWNLOAD EXAMIANS APP
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