Fuels and Combustion As the C/H ratio of the fuel increases, the amount of CO₂ formed on combustion __________ for the same percentage of excess air. Remains same Increases May increase or decrease depending on the type of fuel Decreases Remains same Increases May increase or decrease depending on the type of fuel Decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require maximum amount of % excess air for complete combustion? Furnace oil Lump coal (fixed on chain grate) Coke oven gas Pulverised coal Furnace oil Lump coal (fixed on chain grate) Coke oven gas Pulverised coal 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 have high porosity Should be brittle Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have low fusion point of its ash Should have high porosity Should be brittle ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Volatile matter content of metallurgical coke may be around __________ percent. 10-15 30-33 22-26 1-2 10-15 30-33 22-26 1-2 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bomb calorimeter is used for the determination of calorific value of the __________ fuels. Both B and C Solid Gaseous Liquid Both B and C Solid Gaseous Liquid ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of __________ the flame temperature. The gaseous fuel before combustion decreases Either the fuel or the air or both, increases Combustion air decreases Either the fuel or the air does not affect The gaseous fuel before combustion decreases Either the fuel or the air or both, increases Combustion air decreases Either the fuel or the air does not affect ANSWER DOWNLOAD EXAMIANS APP
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