Fuels and Combustion Most of the coking coals are Anthracite Bituminous Lignite None of these Anthracite Bituminous Lignite None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Combustion of pulverised coal as compared to that of lump coal Provides a lower rate of heat release Develops a non-luminous flame Can be done with less excess air Develops a low temperature flame Provides a lower rate of heat release Develops a non-luminous flame Can be done with less excess air Develops a low temperature flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal All of these Coke oven gas yield is more Calorific value of coke oven gas is less Tar yield is less but free carbon in tar is more All of these Coke oven gas yield is more Calorific value of coke oven gas is less Tar yield is less but free carbon in tar is more ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main advantage of forced draft over natural draft is that Furnace control is easier Smaller height chimney can be used All of these Combustion of fuel is complete Furnace control is easier Smaller height chimney can be used All of these Combustion of fuel is complete ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the High rank coals have higher amount of volatile matter Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases High rank coals have higher amount of volatile matter Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade coke Causes brittleness in steel Decreases the abrasion resistance of coke Decreases the hardness of coke None of these Causes brittleness in steel Decreases the abrasion resistance of coke Decreases the hardness of coke None of these ANSWER DOWNLOAD EXAMIANS APP
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