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 Multicyclones Bag filter Hydrocyclones Wet scrubber Multicyclones Bag filter Hydrocyclones ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Weathering of coal during storage causes Reduction in coal size Decrease in its caking capacity All of these Increase in its friability Reduction in coal size Decrease in its caking capacity All of these Increase in its friability ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For maximum discharge through a chimney, its height should be 200 meters Infinitely long More than 105.7 metres Equal to the height of the hot gas column producing draught 200 meters Infinitely long More than 105.7 metres Equal to the height of the hot gas column producing draught ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not a by-product recovered in a high temperature coal carbonisation plant? Pitch-cresosote mixture (PCM) Ethylene Benzol Napthalene Pitch-cresosote mixture (PCM) Ethylene Benzol Napthalene ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Washing of coal Improves its coking properties All of these Controls its ash fusibility and increases its calorific value Reduces its sulphur and ash content Improves its coking properties All of these Controls its ash fusibility and increases its calorific value Reduces its sulphur and ash content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest gross calorific value? Oil refinery gas Carburetted water gas Coke oven gas Blast furnace gas Oil refinery gas Carburetted water gas Coke oven gas Blast furnace gas ANSWER DOWNLOAD EXAMIANS APP
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