Fuels and Combustion Weathering of coal during storage causes Decrease in its caking capacity Reduction in coal size Increase in its friability All of these Decrease in its caking capacity Reduction in coal size Increase in its friability All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is 200 °K 200 °C 200 °F 200 °R 200 °K 200 °C 200 °F 200 °R ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg. 1000 8000 15000 4000 1000 8000 15000 4000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During the carbonisation of coal Evolution of H₂ and formation of methane and aromatics occur at > 700°C All tar is evolved at < 600°C All of these Hard semi-coke starts shrinking at 600°C Evolution of H₂ and formation of methane and aromatics occur at > 700°C All tar is evolved at < 600°C All of these Hard semi-coke starts shrinking at 600°C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly caking coals Produce weak coke Both B and C Produce strong coke May damage the coke oven walls during carbonisation Produce weak coke Both B and C Produce strong coke May damage the coke oven walls during carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ? Wet scrubber Hydrocyclones Multicyclones Bag filter Wet scrubber Hydrocyclones Multicyclones Bag filter ANSWER DOWNLOAD EXAMIANS APP
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