Fuels and Combustion Coking time in narrow by-product coke ovens is around __________ hours. 80 48 8 18 80 48 8 18 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. In between 37 & 71% >71% None of these < 37% In between 37 & 71% >71% None of these < 37% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature? Heat transfer rate to the stock in the furnace Speed of combustion of fuel Flame temperature achieved Calorific value of the fuel Heat transfer rate to the stock in the furnace Speed of combustion of fuel Flame temperature achieved Calorific value of the fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion One kg of carbon for theoretically complete combustion requires __________ kg of air. 0.5 23 11.5 12 0.5 23 11.5 12 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation of stored coal results in the Decrease in its carbon & hydrogen content Decrease in its caking power & calorific value Increase in its oxygen content All of these Decrease in its carbon & hydrogen content Decrease in its caking power & calorific value Increase in its oxygen content All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Advantages of fluidised bed combustion are All of these Reduced NOx formation in flue gas Lower furnace operating temperature High heat transfer rate All of these Reduced NOx formation in flue gas Lower furnace operating temperature High heat transfer rate ANSWER DOWNLOAD EXAMIANS APP
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