Fuels and Combustion The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. 100 to 150 350 to 450 700 to 850 550 to 650 100 to 150 350 to 450 700 to 850 550 to 650 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The calorific value is the highest out of the following for Producer gas Blast furnace gas Water gas Coke oven gas Producer gas Blast furnace gas Water gas Coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Hardgrove grindability index of four coal samples are given below. Which of them is the easiest to grind? 70 100 85 50 70 100 85 50 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A carbonaceous fuel (containing no H₂ or hydrocarbons) is burnt and the resulting flue gas contains 21% CO₂. It means that No excess air has been used for combustion Complete combustion of fuel has taken place 21% excess air has been used for combustion 21% excess oxygen has been used for combustion No excess air has been used for combustion Complete combustion of fuel has taken place 21% excess air has been used for combustion 21% excess oxygen has been used for combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in Large heaps with small surface to volume ratio Fine sizes without the presence of any lump Closed space without any ventilation facility Shallow and small piles Large heaps with small surface to volume ratio Fine sizes without the presence of any lump Closed space without any ventilation facility Shallow and small piles ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Steam is intermittently admitted into the fuel bed during the production of producer gas to Convert CO to CO₂ Increase the gas production rate Increase the combustion rate Minimise the chances of clinker formation Convert CO to CO₂ Increase the gas production rate Increase the combustion rate Minimise the chances of clinker formation ANSWER DOWNLOAD EXAMIANS APP
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