Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation 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 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 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm³/ton coal (ash = 35%). 150 5000 3500 1500 150 5000 3500 1500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature All of these Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The most matured coal out of the following is Sub-bituminous Bituminous Semi-anthracite Lignite Sub-bituminous Bituminous Semi-anthracite Lignite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel combustion is never cent per cent efficient due to Moisture loss All of these Incomplete combustion Dry gas/stack gas loss Moisture loss All of these Incomplete combustion Dry gas/stack gas loss ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following oil gasification processes is non-catalytic? Steam reforming of naphtha Semet-Solvay process Segas process Onia-Gegi process Steam reforming of naphtha Semet-Solvay process Segas process Onia-Gegi process ANSWER DOWNLOAD EXAMIANS APP
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