Fuels and Combustion Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases. Dew point CO₂ content CO content O₂ content Dew point CO₂ content CO content O₂ content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene is removed from coke oven gas by Adsorbing on bog iron bed None of these Absorbing in vetro-coke solution Scrubbing with wash oil (a petroleum product) Adsorbing on bog iron bed None of these Absorbing in vetro-coke solution Scrubbing with wash oil (a petroleum product) 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 Presence of large quantity of hydrogen in the fuel Low calorific value of the fuel Lack of thorough mixing of fuel with air High sulphur content in the fuel Presence of large quantity of hydrogen in the fuel Low calorific value of the fuel Lack of thorough mixing of fuel with air High sulphur content in the fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of gobar gas (containing CH₄ = 60% , H₂ = 10% ; CO₂ = 30%) may be about __________ Kcal/Nm³. 5400 3200 1800 10200 5400 3200 1800 10200 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon Requires smaller combustion space and less secondary air Is less liable to spontaneous combustion on storage Is more difficult to ignite and produces a shorter flame None of these Requires smaller combustion space and less secondary air Is less liable to spontaneous combustion on storage Is more difficult to ignite and produces a shorter flame None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the Mixing with blast furnace gas Hot scarfing of steel slabs Steel ladle drying Coke oven battery heating Mixing with blast furnace gas Hot scarfing of steel slabs Steel ladle drying Coke oven battery heating ANSWER DOWNLOAD EXAMIANS APP
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