Fuels and Combustion Natural draft created by the chimney depends upon Both A & B Its height Neither A nor B Temperature of the flue gas Both A & B Its height Neither A nor B Temperature of the flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The calorific value of a gas of composition CO₂ = 20%, H₂ = 50%, CH₄ = 30%, is y. If the composition of gas is changed to H₂ = 50%, CH₄ = 30%, CO₂ = 10%, N₂ = 10%, then the calorifice value will be 0.95 y 1.8 y Y 1.05 y 0.95 y 1.8 y Y 1.05 y ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis. 750 1150 950 550 750 1150 950 550 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the Chances of clinker formation Risk of explosion Incomplete combustion of coal Requirement of large volume combustion chamber Chances of clinker formation Risk of explosion Incomplete combustion of coal Requirement of large volume combustion chamber ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in Oxygen Air Either A or B Either A or C without gain or loss of heat Oxygen Air Either A or B Either A or C without gain or loss of heat ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For long flame and easy ignition, the coal used should have Low ash High volatile matter High ash High calorific value Low ash High volatile matter High ash High calorific value ANSWER DOWNLOAD EXAMIANS APP