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Fuels and Combustion

Fuels and Combustion
A gaseous fuel in order to develop luminousity on burning, must contain

Hydrogen
Hydrocarbons
Carbon monoxide
Oxygen

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Fuels and Combustion
Presence of nitrogen in combustion air does not reduce the

Flue gas temperature
Flame temperature
Any of the above
Amount of heat liberated

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Fuels and Combustion
Ionisation potential applied across the electrodes of electrostatic tar precipitator is around

60 KV DC
230 V DC
230 V AC
60 KV AC

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Fuels and Combustion
Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm³ /ton of dry coal.

750
500
160
60

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Fuels and Combustion
With increase in calorific value of fuels, their adiabatic flame temperatures

Remain unchanged
Increase
May increase or decrease ; depends on the quantity of products of combustion
Decrease

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Fuels and Combustion
Natural draft created by the chimney depends upon

Its height
Temperature of the flue gas
Both A & B
Neither A nor B

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