Fuels and Combustion The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be 47.3 23 42.9 27.6 47.3 23 42.9 27.6 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stack heat losses can be minimised by Controlling the excess air Using low c.v. fuels Maintaining proper draft in the furnace Oxygen enrichment of combustion air Controlling the excess air Using low c.v. fuels Maintaining proper draft in the furnace Oxygen enrichment of combustion air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good quality coal should have High sulphur High ash content Low fusion point of ash None of these High sulphur High ash content Low fusion point of ash None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Natural draft created by the chimney depends upon Temperature of the flue gas Both A & B Its height Neither A nor B Temperature of the flue gas Both A & B Its height Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The difference between total carbon and fixed carbon of coal will be minimum in case of Lignite High temperature coke (V.M < 0.5%) Bituminous coal Anthracite Lignite High temperature coke (V.M < 0.5%) Bituminous coal Anthracite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Anthracite coal Is essentially a coking coal Contains more volatile matter than bituminous coal Burns with short, bluish, yellow-tipped flame producing very little smoke Ignites more easily than bituminous coal Is essentially a coking coal Contains more volatile matter than bituminous coal Burns with short, bluish, yellow-tipped flame producing very little smoke Ignites more easily than bituminous coal ANSWER DOWNLOAD EXAMIANS APP