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Fuels and Combustion

Fuels and Combustion
The calorific value of producer gas is around __________ kcal/Nm³

4500
1300
500
9000

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

Boy's
None of these
Junker's
Bomb

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Fuels and Combustion
Which of the following is a rich fuel gas?

Producer gas
Coal gas from underground gasification of coal
Refinery gases
None of these

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

More than theoretically required amount of air
Theoretically required amount of air
Less than theoretically required amount of air
Theoretically required amount of oxygen

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Fuels and Combustion
Atomising steam to fuel oil ratio in a burner should be around

3.5
0.5
1.5
2.5

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Fuels and Combustion
Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air.

5
35
20
10

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