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 Volatile matter content in coking coal may be about __________ percent. 1 46 7 22 1 46 7 22 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Nitrogen in coal Is present upto 1-2% Is recovered as ammonia during its carbonisation Comes from protein in parent vegetable matter All of these Is present upto 1-2% Is recovered as ammonia during its carbonisation Comes from protein in parent vegetable matter All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion When the coal is heated in absence of air, it is called its Carbonisation Deoxidation Coalification Gasification Carbonisation Deoxidation Coalification Gasification ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Catalyst used in Fischer-Tropsch process is Zinc oxide Alumina Nickel Thorium oxide Zinc oxide Alumina Nickel Thorium oxide ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent. 15 to 25 55 to 75 75 35 to 45 15 to 25 55 to 75 75 35 to 45 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS