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
Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace?
A Economiser
B Regenerator
C Ceramic recuperator
D Waste heat 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
Zirconia probe is used for the measurement of
A Humidity of air
B % CO2 in flue gas
C % O2 in flue gas
D Speed of a submarine
Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?
A CO2
B O2
C NO
D NO2
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
Electrode potential is not concerned with the measurment of
A pH value
B Temperature
C Viscosity
D Density
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
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as
A Superheater
B Air-preheater
C Economizer
D Injector

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