Fuels and Combustion High ash containing coke Has poor strength and abrasion resistance Produces more slag when used in the blast furnace None of these Is desirable in producer gas manufacture Has poor strength and abrasion resistance Produces more slag when used in the blast furnace None of these Is desirable in producer gas manufacture ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade coke Decreases the abrasion resistance of coke Causes brittleness in steel Decreases the hardness of coke None of these Decreases the abrasion resistance of coke Causes brittleness in steel Decreases the hardness of coke None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Advantages of fluidised bed combustion are High heat transfer rate All of these Lower furnace operating temperature Reduced NOx formation in flue gas High heat transfer rate All of these Lower furnace operating temperature Reduced NOx formation in flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen. Higher than Same as Not related to Lower than Higher than Same as Not related to Lower than ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Ratio of fixed carbon to volatile matter increases Oxygen content progressively decreases High rank coals have higher amount of volatile matter Calorific value of the coal increases Ratio of fixed carbon to volatile matter increases Oxygen content progressively decreases High rank coals have higher amount of volatile matter Calorific value of the coal increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly reactive coke have lower Porosity Coke reactivity index (CRI) Both B and C Critical air blast (CAB) value Porosity Coke reactivity index (CRI) Both B and C Critical air blast (CAB) value ANSWER DOWNLOAD EXAMIANS APP
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