Fuels and Combustion During combustion of gaseous fuels, deficiency of air Does not affect the flame length Lengthens the flame Increases the flame temperature Tends to shorten the flame Does not affect the flame length Lengthens the flame Increases the flame temperature Tends to shorten the flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest gross calorific value? Blast furnace gas Coke oven gas Oil refinery gas Carburetted water gas Blast furnace gas Coke oven gas Oil refinery gas Carburetted water gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Combustion reaction of fuels is a/an __________ reaction. Endothermic None of these Exothermic Auto catalytic Endothermic None of these Exothermic Auto catalytic ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Turndown ratio of a gas burner is equal to the Minimum to maximum heat input ratio Maximum to minimum permissible gas flow rate Both A & B Maximum to minimum heat input ratio Minimum to maximum heat input ratio Maximum to minimum permissible gas flow rate Both A & B Maximum to minimum heat input ratio ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Height of coke oven is limited (say maximum upto 7 metres) mainly by the Problem of uniform heating along its height Buckling of ram of pusher car at the time of coke pushing Structural strength of silica bricks Problem in door cleaning Problem of uniform heating along its height Buckling of ram of pusher car at the time of coke pushing Structural strength of silica bricks Problem in door cleaning ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature is attained, when the fuel is burnt with Less than theoretically required amount of air More than theoretically required amount of air Theoretically required amount of air Theoretically required amount of oxygen Less than theoretically required amount of air More than theoretically required amount of air Theoretically required amount of air Theoretically required amount of oxygen ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS