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 is the most efficient dust removal equipment for removal of sub-micronic dust particles from blast furnace gas?
A Packed scrubber
B Gravity settling chamber
C Electrostatic precipitator
D Hydrocyclone
Rashna Company collected the following data in its accounting records in 2014 : From the income statement : Depreciation expense Tk. 1,000 Loss on sale of equipment 3,000 From the comparative balance sheet : Beginning balance , equipment Tk. 12,500 Ending balance , equipment 8,000 Beginning balance , accumulated depreciation 2,000 Ending balance , accumulated depreciation 2,400 No new equipment was purchased during the year. The equipment was sold at the end of the year. What was the cash in -flow from the sale of equipment in 2014?
A Tk, 3,900
B Tk. 1,000
C Tk. 900
D Tk. 600
The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the
A Venturi atomiser
B Gravity settling chamber
C Electro-static precipitator
D Cyclone separator
Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec.
A 0.5
B 500
C 10
D 50
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
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
In the cyclone separator used for separation of dust from dust laden gas, the gas
A Enters the cyclone from the top
B Is admitted tangentially at high velocity
C Develops a helical motion inside the chamber
D Both B and C
Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an
A Economiser
B Steam superheater
C Air preheater
D All of the above
In large thermal power stations very fine particulates present in flue gas are removed by
A Wet scrubber
B Bag filter
C Electrostatic precipitators
D Dust catcher

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