Fuels and Combustion Presence of free moisture in coal is most disadvantageous during None of these Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) Combustion of fire slacks on the grates None of these Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) Combustion of fire slacks on the grates ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Largest constituent of blast furnace gas is CO H₂ CO₂ N₂ CO H₂ CO₂ N₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if It contains large amount of volatile matter Smaller fines are stored in large quantity It is stored in tall heaps All of these It contains large amount of volatile matter Smaller fines are stored in large quantity It is stored in tall heaps All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Calorific value Sulphur content Type (solid, liquid or gaseous) Ignition temperature Calorific value Sulphur content Type (solid, liquid or gaseous) Ignition temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Producer gas comprises mainly of CO₂ & H₂ CO₂ & N₂ CO & H₂ CO & N₂ CO₂ & H₂ CO₂ & N₂ CO & H₂ CO & N₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in calorific value of fuels, their adiabatic flame temperatures Decrease Increase Remain unchanged May increase or decrease ; depends on the quantity of products of combustion Decrease Increase Remain unchanged May increase or decrease ; depends on the quantity of products of combustion ANSWER DOWNLOAD EXAMIANS APP
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