A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

Fuels and Combustion
A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

High sulphur content in the fuel

Lack of thorough mixing of fuel with air

Low calorific value of the fuel

Presence of large quantity of hydrogen in the fuel

High sulphur content in the fuel

Lack of thorough mixing of fuel with air

Low calorific value of the fuel

Presence of large quantity of hydrogen in the fuel

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Fuels and Combustion
Coals used for the generation of producer gas should have

Low fusion point of ash

Very low ash content (8-10%)

High volatile matter content

High caking index

Low fusion point of ash

Very low ash content (8-10%)

High volatile matter content

High caking index

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Fuels and Combustion
Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called

None of these

Back draughting

Under pressurising

Banking

None of these

Back draughting

Under pressurising

Banking

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Fuels and Combustion
A carbonaceous fuel (containing no H₂ or hydrocarbons) is burnt and the resulting flue gas contains 21% CO₂. It means that

No excess air has been used for combustion

Complete combustion of fuel has taken place

21% excess air has been used for combustion

21% excess oxygen has been used for combustion

No excess air has been used for combustion

Complete combustion of fuel has taken place

21% excess air has been used for combustion

21% excess oxygen has been used for combustion

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Fuels and Combustion
Increase in ash content of blast furnace coke

Increases its consumption in the furnace

Decreases its hardness and abrasion resistance

Does not affect its consumption in the furnace

Reduces its consumption in the furnace

Increases its consumption in the furnace

Decreases its hardness and abrasion resistance

Does not affect its consumption in the furnace

Reduces its consumption in the furnace

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Fuels and Combustion
'Fuel' can be defined as a substance which produces heat by

Combustion

Nuclear fission

Nuclear fusion

All of these

Combustion

Nuclear fission

Nuclear fusion

All of these

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Fuels and Combustion

Fuels and Combustion A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

Fuels and Combustion Coals used for the generation of producer gas should have

Fuels and Combustion Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called

Fuels and Combustion A carbonaceous fuel (containing no H₂ or hydrocarbons) is burnt and the resulting flue gas contains 21% CO₂. It means that

Fuels and Combustion Increase in ash content of blast furnace coke

Fuels and Combustion 'Fuel' can be defined as a substance which produces heat by

Fuels and Combustion
A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

Fuels and Combustion
Coals used for the generation of producer gas should have

Fuels and Combustion
Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called

Fuels and Combustion
A carbonaceous fuel (containing no H₂ or hydrocarbons) is burnt and the resulting flue gas contains 21% CO₂. It means that

Fuels and Combustion
Increase in ash content of blast furnace coke

Fuels and Combustion
'Fuel' can be defined as a substance which produces heat by