Fuels and Combustion Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis. 500 750 1100 950 500 750 1100 950 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the Use of thick fire bed Low fusion point of ash (< 1100° C) Use of preheated primary air All of these Use of thick fire bed Low fusion point of ash (< 1100° C) Use of preheated primary air All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of tar is about __________ Kcal/kg. 8800 5000 12000 16000 8800 5000 12000 16000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm. 1000 10000 5000 50 1000 10000 5000 50 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increases in carbonisation temperature Methane percentage in the coke oven gas increases Coke even gas yield increases Tar yield increases Hydrogen percentage in the coke oven gas decreases Methane percentage in the coke oven gas increases Coke even gas yield increases Tar yield increases Hydrogen percentage in the coke oven gas decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during None of these Its pulverisation (as it requires more power) Handling (e.g. when emptying wagons) Combustion of fire slacks on the grates None of these Its pulverisation (as it requires more power) Handling (e.g. when emptying wagons) Combustion of fire slacks on the grates ANSWER DOWNLOAD EXAMIANS APP
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