Fuels and Combustion Fixed carbon in coal is defined as That present in volatile matters Hundred minus the percentage of volatile matter, ash and moisture The total quantity of carbon present in the coal The one which is present in the residue after combustion That present in volatile matters Hundred minus the percentage of volatile matter, ash and moisture The total quantity of carbon present in the coal The one which is present in the residue after combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High excess air in combustion of fuels results in Incomplete combustion None of these Increased fuel consumption Smoky flame Incomplete combustion None of these Increased fuel consumption Smoky flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main drawback of supplying more excess air in the combustion of fuel is the High exit flue gas temperature from the furnace Enhanced sensible heat loss in the flue gas Excessive power requirement of air blower Intermittant and uncontrolled combustion of the fuel High exit flue gas temperature from the furnace Enhanced sensible heat loss in the flue gas Excessive power requirement of air blower Intermittant and uncontrolled combustion of the fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. In between 37 & 71% None of these < 37% >71% In between 37 & 71% None of these < 37% >71% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Incomplete combustion of a fuel is characterised by the high __________ in the flue gas. Carbon monoxide Smoke Oxygen Temperature Carbon monoxide Smoke Oxygen Temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking time in a commercial high temperature coal carbonisation plant is about __________ hours. 36 28 18 6 36 28 18 6 ANSWER DOWNLOAD EXAMIANS APP
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