Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking time in a commercial high temperature coal carbonisation plant is about __________ hours. 36 28 18 6 36 28 18 6 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace gas constitutes mainly of N₂ & H₂ N₂ & CO CH₄ & CO₂ N₂ & CH₄ N₂ & H₂ N₂ & CO CH₄ & CO₂ N₂ & CH₄ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The function of secondary combustion air is to Completely burn the volatile matter Pneumatically convey the pulverised coal Burn the lumpy coal None of these Completely burn the volatile matter Pneumatically convey the pulverised coal Burn the lumpy coal None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ is used as jet engine fuel. Diesel LPG Petrol Kerosene Diesel LPG Petrol Kerosene ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade 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 Decreases the hardness of coke ANSWER DOWNLOAD EXAMIANS APP
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