Fuels and Combustion Supply of excess air for complete combustion of fuel is necessitated to facilitate Attainment of chemical equilibrium Its thorough mixing with air Attainment of high temperature None of these Attainment of chemical equilibrium Its thorough mixing with air Attainment of high temperature None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High rate of heating of coke ovens None of these Produces larger size coke Increases the time of carbonisation May damage its walls due to abrupt excessive swelling of coal None of these Produces larger size coke Increases the time of carbonisation May damage its walls due to abrupt excessive swelling of coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bomb calorimeter can be used to determine the __________ of the coal. Neither A nor B Both A & B Sulphur content Calorific value Neither A nor B Both A & B Sulphur content Calorific value 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? Speed of combustion of fuel Calorific value of the fuel Heat transfer rate to the stock in the furnace Flame temperature achieved Speed of combustion of fuel Calorific value of the fuel Heat transfer rate to the stock in the furnace Flame temperature achieved ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature is attained, when the fuel is burnt with Theoretically required amount of oxygen Theoretically required amount of air More than theoretically required amount of air Less than theoretically required amount of air Theoretically required amount of oxygen Theoretically required amount of air More than theoretically required amount of air Less than theoretically required amount of air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Actual flame temperature is always lower than the adiabatic flame temperature, because there is Always loss of heat from the flame Both A & B Neither A nor B No possibility of obtaining complete combustion at high temperature Always loss of heat from the flame Both A & B Neither A nor B No possibility of obtaining complete combustion at high temperature ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS