Fuels and Combustion A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be Less Same More Data insufficient; can't be predicted Less Same More Data insufficient; can't be predicted ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have low fusion point of its ash Should be brittle Should have high porosity Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have low fusion point of its ash Should be brittle Should have high porosity ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon Is more difficult to ignite and produces a shorter flame None of these Requires smaller combustion space and less secondary air Is less liable to spontaneous combustion on storage Is more difficult to ignite and produces a shorter flame None of these Requires smaller combustion space and less secondary air Is less liable to spontaneous combustion on storage ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the High oxygen in flue gas None of these Complete combustion Incomplete combustion High oxygen in flue gas None of these Complete combustion Incomplete combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a lean fuel gas? Natural gas LPG Coke oven gas Blast furnace gas Natural gas LPG Coke oven gas Blast furnace gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main drawback of supplying more excess air in the combustion of fuel is the High exit flue gas temperature from the furnace Intermittant and uncontrolled combustion of the fuel Enhanced sensible heat loss in the flue gas Excessive power requirement of air blower High exit flue gas temperature from the furnace Intermittant and uncontrolled combustion of the fuel Enhanced sensible heat loss in the flue gas Excessive power requirement of air blower ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS