Fuels and Combustion Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent. 40 96 20 4 40 96 20 4 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion C.V. (kcal/Nm³) of gaseous fuels __________ with increase in molecular weight. Increases May increase or decrease, depends on combustibles Decreases Remains constant Increases May increase or decrease, depends on combustibles Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Actual flame temperature is always lower than the adiabatic flame temperature, because there is Neither A nor B Always loss of heat from the flame No possibility of obtaining complete combustion at high temperature Both A & B Neither A nor B Always loss of heat from the flame No possibility of obtaining complete combustion at high temperature Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High ash containing coke Is desirable in producer gas manufacture Has poor strength and abrasion resistance None of these Produces more slag when used in the blast furnace Is desirable in producer gas manufacture Has poor strength and abrasion resistance None of these Produces more slag when used in the blast furnace ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace coke is made from coal by Medium temperature carbonisation Low temperature carbonisation High temperature carbonisation Heating the coal in an oven in presence of air Medium temperature carbonisation Low temperature carbonisation High temperature carbonisation Heating the coal in an oven in presence of air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Largest constituent of coke oven gas is CO₂ N₂ H₂ CH₄ CO₂ N₂ H₂ CH₄ ANSWER DOWNLOAD EXAMIANS APP
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