Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade coke Decreases the hardness of coke Causes brittleness in steel None of these Decreases the abrasion resistance of coke Decreases the hardness of coke Causes brittleness in steel None of these Decreases the abrasion resistance of coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Most of the coking coals are Lignite Anthracite Bituminous None of these Lignite Anthracite Bituminous None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C. 120 30 180 65 120 30 180 65 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of __________ the flame temperature. Either the fuel or the air does not affect Either the fuel or the air or both, increases Combustion air decreases The gaseous fuel before combustion decreases Either the fuel or the air does not affect Either the fuel or the air or both, increases Combustion air decreases The gaseous fuel before combustion decreases 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 High excess air in combustion of fuels results in Increased fuel consumption Incomplete combustion None of these Smoky flame Increased fuel consumption Incomplete combustion None of these Smoky flame ANSWER DOWNLOAD EXAMIANS APP
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