Fuels and Combustion Calorific value of gobar gas (containing CH₄ = 60% , H₂ = 10% ; CO₂ = 30%) may be about __________ Kcal/Nm³. 5400 3200 10200 1800 5400 3200 10200 1800 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has Both A & B Neither A nor B Lower hydrogen content Higher calorific value Both A & B Neither A nor B Lower hydrogen content Higher calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be 23 47.3 27.6 42.9 23 47.3 27.6 42.9 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Deficiency of combustion air during combustion of a gaseous fuel Lengthens the flame Causes heat loss of fuel by its partial combustion Shortens the flame Both A & B Lengthens the flame Causes heat loss of fuel by its partial combustion Shortens the flame Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal. Carbonisation Gasification Coalification Oxidation Carbonisation Gasification Coalification Oxidation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Caking coal is desirable for All of these Burning on travelling grate Coke making Burning on firebars All of these Burning on travelling grate Coke making Burning on firebars ANSWER DOWNLOAD EXAMIANS APP
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