Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the High rank coals have higher amount of volatile matter Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases High rank coals have higher amount of volatile matter Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which is the heaviest fuel gas out of the following? Blast furnace gas Water gas Coke oven gas Carburetted water gas Blast furnace gas Water gas Coke oven gas Carburetted water gas 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 65 180 30 120 65 180 30 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Out of the following, which is the most important parameter for the blast furnace grade coke? Volatile matter content Moisture content Ash content CSR & CRI Volatile matter content Moisture content Ash content CSR & CRI ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking time in narrow by-product coke ovens is around __________ hours. 8 18 80 48 8 18 80 48 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in calorific value of fuels, their adiabatic flame temperatures Decrease Increase Remain unchanged May increase or decrease ; depends on the quantity of products of combustion Decrease Increase Remain unchanged May increase or decrease ; depends on the quantity of products of combustion ANSWER DOWNLOAD EXAMIANS APP
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