Fuels and Combustion A coal having high volatile matter content will Burn with a small non-smoky flame None of these Give less yield of tar and gas on carbonisation Have a very high calorific value Burn with a small non-smoky flame None of these Give less yield of tar and gas on carbonisation Have a very high calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in Fine sizes without the presence of any lump Shallow and small piles Closed space without any ventilation facility Large heaps with small surface to volume ratio Fine sizes without the presence of any lump Shallow and small piles Closed space without any ventilation facility Large heaps with small surface to volume ratio ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas constitutes mainly of CH₄ & CO H₂ & CO H₂ & CO₂ H₂ & CH₄ CH₄ & CO H₂ & CO H₂ & CO₂ H₂ & CH₄ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel combustion is never cent per cent efficient due to All of these Moisture loss Dry gas/stack gas loss Incomplete combustion All of these Moisture loss Dry gas/stack gas loss Incomplete combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because It reduces its calorific value tremendously The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its flame temperature tremendously There are chances of explosion during preheating It reduces its calorific value tremendously The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its flame temperature tremendously There are chances of explosion during preheating ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having higher volatile matter content will necessarily have lower Caking index Ignition temperature Ash fusion temperature Calorific value Caking index Ignition temperature Ash fusion temperature Calorific value ANSWER DOWNLOAD EXAMIANS APP
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