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 1.8 y Y 0.95 y 1.05 y 1.8 y Y 0.95 y 1.05 y ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion When the coal is heated in absence of air, it is called its Coalification Deoxidation Gasification Carbonisation Coalification Deoxidation Gasification Carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Function of secondary air in pulverised coal firing is to Ensure efficient burning of coal around the burner Transport the coal to the burner Reduce primary air requirement Dry the coal Ensure efficient burning of coal around the burner Transport the coal to the burner Reduce primary air requirement Dry the coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly reactive coke have lower Porosity Critical air blast (CAB) value Coke reactivity index (CRI) Both B and C Porosity Critical air blast (CAB) value Coke reactivity index (CRI) Both B and C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking coals are invariably Semi-anthracites Bituminous coals Lignites Anthracites Semi-anthracites Bituminous coals Lignites Anthracites ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if It is stored in tall heaps Smaller fines are stored in large quantity All of these It contains large amount of volatile matter It is stored in tall heaps Smaller fines are stored in large quantity All of these It contains large amount of volatile matter ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS