Related Questions

Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
A CO2
B N2
C O2
D CO
The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as
A Efficiency of the boiler
B Efficiency of the chimney
C Efficiency of the fan
D Power of the boiler
Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.
A [

A.

B.

High sulphur content in a fuel __________ of the flue gases.
A Decreases the dew point
B Increases the dew point
C Reduces the combustion efficiency by limiting the permissible temperature reduction
D Both B & C
Incomplete combustion of a fuel is characterised by the high __________ in the flue gas.
A Smoke
B Temperature
C Oxygen
D Carbon monoxide
In flue gas analysis by Orsat's apparatus, oxygen is absorbed by
A Potassium hydroxide
B Cuprous chloride
C Alkaline pyragllol solution
D None of these
The mass of flue gas per kg of fuel is the ratio of the
A Mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel
B Mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas
C Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel
D Mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas
White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is
A Tar
B Coke oven gas
C Pitch
D Pulverised coke
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain
A CO
B CO2
C H2O
D Both B & C
Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.
A CO content
B Dew point
C CO2 content
D O2 content

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