Fuels and Combustion The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen. Lower than Not related to Same as Higher than Lower than Not related to Same as Higher than ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gross heating value of coal is __________ the net heating value. Same as Higher than Lower than None of these Same as Higher than Lower than None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Does not vary with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Does not vary with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal, the Tar yield is more Gas yield is less Ignition temperature of coke produced is less Aromatic content of tar produced is more Tar yield is more Gas yield is less Ignition temperature of coke produced is less Aromatic content of tar produced is more ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following can be made into briquettes without the use of a binder? Anthracite coal Lignite None of these Bituminous coal Anthracite coal Lignite None of these Bituminous coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of combustion air is done to Complete the combustion of fuel Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Increase the adiabatic flame temperature Complete the combustion of fuel Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Increase the adiabatic flame temperature ANSWER DOWNLOAD EXAMIANS APP
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