Fuels and Combustion Fixed carbon in coal is defined as That present in volatile matters The one which is present in the residue after combustion The total quantity of carbon present in the coal Hundred minus the percentage of volatile matter, ash and moisture That present in volatile matters The one which is present in the residue after combustion The total quantity of carbon present in the coal Hundred minus the percentage of volatile matter, ash and moisture 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 Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing? Excessive fly-ash discharge from the stack High power consumption in its transportation Erosion of induced draft fan blades Ash disposal problem Excessive fly-ash discharge from the stack High power consumption in its transportation Erosion of induced draft fan blades Ash disposal problem ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Height of coke oven is limited (say maximum upto 7 metres) mainly by the Buckling of ram of pusher car at the time of coke pushing Problem in door cleaning Problem of uniform heating along its height Structural strength of silica bricks Buckling of ram of pusher car at the time of coke pushing Problem in door cleaning Problem of uniform heating along its height Structural strength of silica bricks ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Abel apparatus is used for those oils, whose flash points are___°F. >280 >120 300-600 >280 >120 300-600 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke compared to the coal from which it has been made, contains More carbon Less volatile matter Greater percentage of ash All of these More carbon Less volatile matter Greater percentage of ash All of these ANSWER DOWNLOAD EXAMIANS APP
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