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
Which furnace employs an I.D. fan for the removal of flue gases from the furnace?
A Coke oven
B Blast furnace stoves
C Beehive coke oven
D High pressure boiler
The rate of scaling of furnace stock depends upon the
A Temperature
B Time
C Nature of atmosphere
D All of the above
Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.
A [

A.

B.

Flue gas outlet temperature from the chimney of any furnace should be ideally about __________ °C.
A 50
B 100
C 150
D 250
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
Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of
A Fireclay
B Silicon carbide
C Corrundum
D Siliceous fireclay
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
Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace.
A Oxygen in
B Carbon dioxide in
C Carbon monoxide in
D Temperature of

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