Fuels and Combustion The weathering index of a coal Is related to its calorific value Is a measure of its caking tendency Is a measure of its size stability, when stored & exposed to weather Gives an idea of the fusion temperature of ash Is related to its calorific value Is a measure of its caking tendency Is a measure of its size stability, when stored & exposed to weather Gives an idea of the fusion temperature of ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A particular coal is said to be free burning when it Burns completely None of these Gives smokeless burning Shows little or no fusing action Burns completely None of these Gives smokeless burning Shows little or no fusing action ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? Low reactivity of carbonised residue containing high proportions of iron & sulphur Thick fire bed and preheated primary air All of these Low forced draught and fuel bed temperature Low reactivity of carbonised residue containing high proportions of iron & sulphur Thick fire bed and preheated primary air All of these Low forced draught and fuel bed temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Quantity of coke produced from metallurgical coal may be around __________ percent. 50 30 95 75 50 30 95 75 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a lean fuel gas? Coke oven gas Natural gas LPG Blast furnace gas Coke oven gas Natural gas LPG Blast furnace gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation Both A & B Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Neither A nor B Both A & B Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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