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Pollution Control Practice Test: Air Pollution Control Methods and Equipment
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Air Pollution Control Methods and Equipment topics include: Air pollution source correction methods, particulate emission control, gravitational settling chambers, cyclone separators, fabric filters, electrostatic precipitators, wet scrubbers, particulate collectors selection and gaseous emissions control. Air pollution control equipment uses devices and systems to prevent or reduce the release of harmful pollutants into the air.  Here are some examples of air pollution control equipment: Fabric filters: Remove particulate matter from a gas stream by passing dirty air through a layer of... Show more
Pollution Control Practice Test: Air Pollution Control Methods and Equipment
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25 Questions

1. How can sulphurous compounds be reduced in the smelting industry?
2. Which of the following equations represents the collection efficiency of the electrostatic precipitator?
3. What happens when the resistivity of the particles to be collected by the electrostatic precipitator is too low?
4. How are volatile gases recovered from the emissions using the process change method?
5. At the industrial level, how can engineers deal with pollutant problems in the plant conception stage?
6. What is the best way to obtain a high efficiency of removal from cyclones?
7. Other than source correction methods, which industrial operations can reduce air pollutant emissions?
8. After operating for some time, what is the primary medium of separation in fabric filters?
9. On what basis are filters classified into packed or fabric filters?
10. Why do fabric filters need regular maintenance?
11. Which gaseous components are ionised during electrostatic precipitation?
12. How are the fibres packed in the fabric filters?
13. Which of the following is not false about gravitational chambers?
14. What is the fabric filter classification based on?
15. Why can the equations calculating the drag coefficient of particulates in the gravity settling chamber not predict actual settling?
16. Which of the following is not a source correction method?
17. What is the most frequent use of the multiple unit electrostatic precipitator?
18. Which of the following is not a disadvantage of using wet collectors?
19. Which of the following factors does fractional efficiency not depend on?
20. Which of the following is a factor upon which the choice of equipment for particulate collection depends?
21. How does the through-flow type cyclone vary from the reverse flow type cyclone?
22. What is the formula for collection efficiency in terms of fractional efficiency?
Where ηi is fractional efficiency, M is the total amount entering collector, and mi is the fraction collected in the given range.
23. Among the tools available for particulate collection, which of the following is not preferred?
24. How does the pressure drop in the electrostatic precipitator compare with other particle collectors?
25. In the collection efficiency equation for the electrostatic precipitator, what does the term vpm represent?
η = 1 - exp(- vpm * Ac / Q)