Fuels and Combustion With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases. Methane Hydrogen Unsaturated hydrocarbons All of these Methane Hydrogen Unsaturated hydrocarbons All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent. 55 to 75 35 to 45 15 to 25 75 55 to 75 35 to 45 15 to 25 75 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following fuels is generally not used in thermal power plant boiler firing? Pulverised coking coal Furnace oil, light diesel oil and tar/PCM Coal middling from washeries F. gas, coke oven gas and L.D. converter gas Pulverised coking coal Furnace oil, light diesel oil and tar/PCM Coal middling from washeries F. gas, coke oven gas and L.D. converter gas 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 Volatile matter content of metallurgical coke may be around __________ percent. 22-26 10-15 30-33 1-2 22-26 10-15 30-33 1-2 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not a by-product fuel? Blast furnace gas Pitch Refinery gas Petrol Blast furnace gas Pitch Refinery gas Petrol ANSWER DOWNLOAD EXAMIANS APP
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