Fuels and Combustion Which of the following is a measure of the agglutinating (i.e., binding) property of coal? Swelling index Thickness of plastic layer Gray-king index Caking index Swelling index Thickness of plastic layer Gray-king index Caking index ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The fuel ratio of a coal is The ratio of its percentage of fixed carbon to that of volatile matter Neither A nor B Both A and B Helpful in estimation of its rank The ratio of its percentage of fixed carbon to that of volatile matter Neither A nor B Both A and B Helpful in estimation of its rank ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO₂, 20%CO and 10%O₂. The percent excess oxygen used is 20 0 10 12.5 20 0 10 12.5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A sooty flame can be made non-luminous by Admitting more air Shutting air supply Admitting more gas Shutting gas supply Admitting more air Shutting air supply Admitting more gas Shutting gas supply ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Turndown ratio of a gas burner is equal to the Maximum to minimum permissible gas flow rate Minimum to maximum heat input ratio Maximum to minimum heat input ratio Both A & B Maximum to minimum permissible gas flow rate Minimum to maximum heat input ratio Maximum to minimum heat input ratio Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas is a better fuel than blast furnace gas, because of its higher Adiabatic flame temperature Heat release rate (thus requiring smaller combustion chamber) Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity) All of these Adiabatic flame temperature Heat release rate (thus requiring smaller combustion chamber) Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity) All of these ANSWER DOWNLOAD EXAMIANS APP
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