Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Ignition temperature Sulphur content Type (solid, liquid or gaseous) Calorific value Ignition temperature Sulphur content Type (solid, liquid or gaseous) Calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ Kcal/Nm³. 2500 4000 10000 6500 2500 4000 10000 6500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of __________ in a dry gaseous fuel does not contribute to its calorific value. Sulphur Oxygen Hydrogen Carbon Sulphur Oxygen Hydrogen Carbon 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 It contains large amount of volatile matter All of these Smaller fines are stored in large quantity It is stored in tall heaps It contains large amount of volatile matter All of these Smaller fines are stored in large quantity ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ? F. gas and coke oven gas Sewage gas and gobar gas Propane and LPG Propane and acetylene F. gas and coke oven gas Sewage gas and gobar gas Propane and LPG Propane and acetylene ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Largest constituent of blast furnace gas is CO₂ H₂ N₂ CO CO₂ H₂ N₂ CO ANSWER DOWNLOAD EXAMIANS APP
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