A. Solid fuels
B. Gaseous fuels
C. Liquid fuels
D. Fat coals
Related Mcqs:
- In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of__________________?
A. Transportation of coal
B. Drying of coal
C. Combustion of coal by supplying it around the burner
D. Preheating the primary air - Emission of dense white smoke out of the chimney of a thermal power plant is an indication of the use of__________________?
A. Less air for combustion
B. Correct amount of air for combustion
C. Too much air for combustion
D. Pulverised coal in boilers - The bright glow of a combustion process is the characteristic of ______________ temperature oxidation of coal?
A. Fast & high
B. Slow & low
C. Slow & high
D. Fast & slow - “Micum Index” of a coke is a measure of its___________________?
A. Reactivity
B. Porosity
C. Bulk density
D. Hardness & strength - Desirable “Micum Index” values of metallurgical coke are ___________________?
A. M40 > 78% and M10 < 10%
B. M40 > 4% and M10 10% and M10 98% and M10 < 2% - Shatter index of the coke is a measure of its___________________?
A. Strength
B. Bulk density
C. ReactivityD. None of these
- Caking index of coal blend used for blast furnace coke making is about_________________?
A. 8
B. 12
C. 22
D. 36 - The weathering index of a coal________________?
A. Gives an idea of the fusion temperature of ash
B. Is related to its calorific value
C. Is a measure of its size stability, when stored & exposed to weather
D. Is a measure of its caking tendency - Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around _______________ percent?
A. 80 and 97
B. 95 and 100
C. 40 and 70
D. 25 and 97 - Grindability index of a coal is 100. It implies that the ___________________?
A. Coal can be pulverised with great difficulty
B. Coal can’t be pulverised
C. Coal can be easily pulverised
D. Power consumption in grinding the coal will be very high
