Fuels and Combustion Coking time in narrow by-product coke ovens is around __________ hours. 18 80 48 8 18 80 48 8 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following fuels is generally not used in thermal power plant boiler firing? Pulverised coking coal Coal middling from washeries Furnace oil, light diesel oil and tar/PCM F. gas, coke oven gas and L.D. converter gas Pulverised coking coal Coal middling from washeries Furnace oil, light diesel oil and tar/PCM F. gas, coke oven gas and L.D. converter gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction? 2CO ⟷ C + CO₂ CO + H₂O ⟷ CO₂ + H₂ C + H₂O ⟷ CO + H₂ C + 2H₂O ⟷ CO₂ + 2H₂ 2CO ⟷ C + CO₂ CO + H₂O ⟷ CO₂ + H₂ C + H₂O ⟷ CO + H₂ C + 2H₂O ⟷ CO₂ + 2H₂ 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 Both A & B Neither A nor B To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Because, it alone produces unreactive coke Both A & B Neither A nor B To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Washing of coal is done to reduce the Inherent impurities Mineral matter Both B and C Adhering impurities Inherent impurities Mineral matter Both B and C Adhering impurities ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg. 1000 8000 15000 4000 1000 8000 15000 4000 ANSWER DOWNLOAD EXAMIANS APP
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