FUELS AND COMBUSTION QUIZ

Calorific value of furnace oil is about __________ Kcal/kg.

5000

20000

10000

15000

TRUE ANSWER : ?
YOUR ANSWER : ?

Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter.

Bomb

Boy's

Junker's

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be

42.9

47.3

23

27.6

TRUE ANSWER : ?
YOUR ANSWER : ?

A good metallurgical coke

Must contain moderate quantities of ash, moisture, sulphur and volatile matters

Should be brittle

Should have high porosity

Should have low fusion point of its ash

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum adiabatic flame temperature is attained, when the fuel is burnt with

Less than theoretically required amount of air

More than theoretically required amount of air

Theoretically required amount of air

Theoretically required amount of oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a micro component present in coal?

Clarain

Liptinite

Micrinite

Fusinite

TRUE ANSWER : ?
YOUR ANSWER : ?

Calorific value of bituminous coal may be around __________ Kcal/kg.

1500

500

20000

6500

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following fuels is generally not used in thermal power plant boiler firing?

Furnace oil, light diesel oil and tar/PCM

F. gas, coke oven gas and L.D. converter gas

Pulverised coking coal

Coal middling from washeries

TRUE ANSWER : ?
YOUR ANSWER : ?

Power alcohol as compared to straight run gasoline has lower

Calorific value

Viscosity

Specific gravity

Octane number

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following constituents of coal is the most important in the production of coke?

Volatiles

Ash

Moisture

Carbon

TRUE ANSWER : ?
YOUR ANSWER : ?

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