Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Ignition temperature Type (solid, liquid or gaseous) Sulphur content Calorific value Ignition temperature Type (solid, liquid or gaseous) Sulphur content Calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Neither A nor B Both A & B Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.) GCV at constant pressure NCV at constant pressure GCV at constant volume NCV at constant volume GCV at constant pressure NCV at constant pressure GCV at constant volume NCV at constant volume ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking time in narrow by-product coke ovens is around __________ hours. 48 18 80 8 48 18 80 8 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm³/ton coal (ash = 35%). 3500 150 1500 5000 3500 150 1500 5000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Moisture loss is determined by the The water formed by combustion reaction Humidity of combustion air Both A and B Moisture content of fuel The water formed by combustion reaction Humidity of combustion air Both A and B Moisture content of fuel ANSWER DOWNLOAD EXAMIANS APP
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