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 an additive for flue gases from furnace to reduce its dew-point?
A Ammonia
B Fine dolomite
C Alkaline powders
D None of these
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
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
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
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
Point A is 10 miles West of Point B. Point b is 30 miles North of pint C. Point C is 20 miles East of Point D. What is the distance (in miles) between Point A and Point D?
A 1010
B 1020
C 2010
D 3010
Point A is 10 km west of point B. Point B is 30 km north of point C. Point C is 20 km east of point D. What is the distance between point A and D?
A 1020Km
B 1010Km
C 2010Km
D 3010Km
At constant pressure, with increase of temperature, the dew point will
A Increase
B Decrease
C Remain unchanged
D Increase/decrease ; depends on the temperature
With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)
A Increases
B Remains unchanged
C Decreases
D Decreases linearly

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