Fuels and Combustion During combustion of gaseous fuels, deficiency of air Increases the flame temperature Tends to shorten the flame Lengthens the flame Does not affect the flame length Increases the flame temperature Tends to shorten the flame Lengthens the flame Does not affect the flame length ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Out of the following fuels, the difference between the net and gross calorific value is maximum in case of Fuel oil Blast furnace gas Bituminous coal Pitch Fuel oil Blast furnace gas Bituminous coal Pitch ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Compound coke ovens are those which can be heated by Rich gas (e.g., coke oven gas) Both B and C Lean gas (e.g., B.F. gas) Both steam and electrical power Rich gas (e.g., coke oven gas) Both B and C Lean gas (e.g., B.F. gas) Both steam and electrical power ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during None of these Combustion of fire slacks on the grates Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) None of these Combustion of fire slacks on the grates Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen required for theoretically complete combustion of 1 Nm³ methane is __________ Nm³. 1 6 2 4 1 6 2 4 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen percentage (by weight) in atmospheric air is 23 19 21 29 23 19 21 29 ANSWER DOWNLOAD EXAMIANS APP
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