Fuels and Combustion Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because It reduces its flame temperature tremendously There are chances of explosion during preheating The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its calorific value tremendously It reduces its flame temperature tremendously There are chances of explosion during preheating The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its calorific value tremendously ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing? High power consumption in its transportation Ash disposal problem Excessive fly-ash discharge from the stack Erosion of induced draft fan blades High power consumption in its transportation Ash disposal problem Excessive fly-ash discharge from the stack Erosion of induced draft fan blades ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace gas burns with a bluish flame, because of the presence of CH₄ S CO CO₂ CH₄ S CO CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter. None of these Junker's Bomb Boy's None of these Junker's Bomb Boy's ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion By-products are __________ recovered in 'Beehive ovens'. Fully Partially Not at all Negligibly Fully Partially Not at all Negligibly ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal, the Gas yield is less Ignition temperature of coke produced is less Tar yield is more Aromatic content of tar produced is more Gas yield is less Ignition temperature of coke produced is less Tar yield is more Aromatic content of tar produced is more ANSWER DOWNLOAD EXAMIANS APP
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