Fuels and Combustion The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. 350 to 450 550 to 650 100 to 150 700 to 850 350 to 450 550 to 650 100 to 150 700 to 850 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher Higher C/H ratio Sulphur content Calorific value Difference in gross & net calorific value Higher C/H ratio Sulphur content Calorific value Difference in gross & net calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pick the odd man out. Briquettes Pitch creosote mixture Oil gas Wood Briquettes Pitch creosote mixture Oil gas Wood ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Weathering of coal during storage causes Reduction in coal size Increase in its friability All of these Decrease in its caking capacity Reduction in coal size Increase in its friability All of these Decrease in its caking capacity ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke should have very low Fusion point of its ash Sulphur & phosphorous content Porosity Hardness & strength Fusion point of its ash Sulphur & phosphorous content Porosity Hardness & strength ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the Low calorific value of the fuel High sulphur content in the fuel Presence of large quantity of hydrogen in the fuel Lack of thorough mixing of fuel with air Low calorific value of the fuel High sulphur content in the fuel Presence of large quantity of hydrogen in the fuel Lack of thorough mixing of fuel with air ANSWER DOWNLOAD EXAMIANS APP
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