A. Lower bulk density
B. Lower strength
C. Higher reactivity
D. All A., B. and C.
Coke having higher porosity has ___________________? Read More »
Fuels and Combustion A. High caking index
B. Low fusion point of ash
C. High volatile matter content
D. Very low ash content (8-10%)
Coals used for the generation of producer gas should have ____________________? Read More »
Fuels and Combustion A. Burning on travelling grate
B. Coke making
C. Burning on firebars
D. All A., B. and C.
Caking coal is desirable for_________________? Read More »
Fuels and Combustion A. Smoking tendency on burning
B. Coke oven gas yield on carbonisation
C. Chance of catching fire during storage in open space
D. Ignition temperature
A coal having higher volatile matter content, has lower_________________? Read More »
Fuels and Combustion A. Coke
B. Anthracite
C. Coal having low fusion point of its ash
D. Coal having high fusion point of its ash
Which of the following is unsuitable fuel for producer gas manufacture ? Read More »
Fuels and Combustion A. Scale losses of the furnace stock
B. Calorific value of the fuel
C. Flame temperature
D. None of these
A. Coke oven gas
B. Blast furnace gas
C. Natural gas
D. None of these
Which of the following is a poisonous fuel gas ? Read More »
Fuels and Combustion A. Lower ignition temperature
B. Narrower limit of inflammability
C. Higher calorific value
D. Lower theoretical flame temperature
Blast furnace gas compared to coke oven gas has_________________? Read More »
Fuels and Combustion A. Carburetted water gas
B. Gobar gas
C. Natural gas
D. LPG
Which of the following has the highest calorific value (kcal/Nm3) ? Read More »
Fuels and Combustion A. Burn CO to CO2
B. Dry and transport the coal
C. Have proper combustion by supplying it around the burner
D. Preheat the tertiary air used for complete combustion of CO to CO2
The main function of primary air in pulverised coal fired burner is to_________________? Read More »
Fuels and Combustion