Fuels and Combustion Fixed carbon in coal is defined as The total quantity of carbon present in the coal Hundred minus the percentage of volatile matter, ash and moisture That present in volatile matters The one which is present in the residue after combustion The total quantity of carbon present in the coal Hundred minus the percentage of volatile matter, ash and moisture That present in volatile matters The one which is present in the residue after combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation of stored coal results in the All of these Increase in its oxygen content Decrease in its caking power & calorific value Decrease in its carbon & hydrogen content All of these Increase in its oxygen content Decrease in its caking power & calorific value Decrease in its carbon & hydrogen content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in moisture content of coal, its Calorific value increases sometimes None of these Bulk density always decreases Clinkering tendency during combustion increases Calorific value increases sometimes None of these Bulk density always decreases Clinkering tendency during combustion increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The weathering index of a coal Is a measure of its size stability, when stored & exposed to weather Is related to its calorific value Gives an idea of the fusion temperature of ash Is a measure of its caking tendency Is a measure of its size stability, when stored & exposed to weather Is related to its calorific value Gives an idea of the fusion temperature of ash Is a measure of its caking tendency ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ignition temperature of a fuel in air is __________ that in pure oxygen. Less than Equal to More than Either more or less; depends on the type of fuel Less than Equal to More than Either more or less; depends on the type of fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis. 1150 550 750 950 1150 550 750 950 ANSWER DOWNLOAD EXAMIANS APP
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