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Name
Reg No
B
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
07 THRISSUR CLUSTER
SECOND SEMESTER M.TECH. DEGREE EXAMINATION APR 2017
Civil Engineering
Environmental Engineering
07CE6104 AIR QUALITY MANAGEMENT AND METEOROLOGY
Time 3 hours Max.Marks: 60
Answer all six questions. Part of each question is compulsory.
Answer either part or part of each question
Q.no. Module 1 Marks
1a Write a short note on air pollution? 4
Answer b or c
b Explain the various scales of concentration? 5
c Carbon monoxide is present in standard atmospheric air at a concentration of
50ppm.Compute Yp ,wp values for the CO concentration in the atmosphere.
Given ρa =1.185Kg/m2,Mp =28.
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Q.no. Module 2 Marks
2a What are different types of lapse rates? 4
Answer b or c
b Name the different types of plumes? Explain. 5
c Write a note on Gaussian plume model? 5
Q.no. Module 3 Marks
3a Write a note on ambient air sampling? 4
Answer b or c
b Explain in detail any two methods used for collection of gaseous air pollutants? 5
c Describe with a neat sketch the working of a Non dispersion infrared analyser

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Q.no. Module 4 Marks
4a What are the different source correction methods? 4
Answer b or c
b Write a short note on gravitational settling chamber? 5
c Derive the equation for collection efficiency for settling chamber? 5
Q.no. Module 5 Marks
5a Explain the working mechanism of fabric filters? 5
Answer b or c
b Explain the working of an electrostatic precipitator with a neat sketch? 7
c A plate type electrostatic precipitator for use in a cement plant for removing
dust particles consist of ten equal channels. The spacing between the plates is
0.15m and the plates are 2m high and 2m long. The unit handles 1000m3/hr of
gas. What is the collection efficiency? What should be the length of the plates
for achieving 99% collection efficiency if other conditions are same. Particle
migration velocity Vpm=0.1m/s
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Q.no. Module 6 Marks
6a Write a short note on noise pollution? 5
Answer b or c
b With a neat sketch explain Reinluft process? 7
c What are the various process modifications adopted for control of nitrogen
oxides?
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