Fuels and Combustion Highly caking coals May damage the coke oven walls during carbonisation Produce strong coke Both B and C Produce weak coke May damage the coke oven walls during carbonisation Produce strong coke Both B and C Produce weak coke 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 hardness of coke Decreases the abrasion resistance of coke Causes brittleness in steel None of these Decreases the hardness of coke Decreases the abrasion resistance of coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases. Dew point O₂ content CO₂ content CO content Dew point O₂ content CO₂ content CO content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Hardgrove grindability index of four coal samples are given below. Which of them is the easiest to grind? 50 85 70 100 50 85 70 100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about Same as that of coal middling 25000 kcal/kg 8800 kcal/m³ 8800 kcal/kg Same as that of coal middling 25000 kcal/kg 8800 kcal/m³ 8800 kcal/kg ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Too much of excess air in combustion results in high Stack gas temperature Fuel consumption for the same heat load Percentage of oxygen in flue gases All of these Stack gas temperature Fuel consumption for the same heat load Percentage of oxygen in flue gases All of these ANSWER DOWNLOAD EXAMIANS APP
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