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- 1. Multiple Choice
Hybrid systems are defined as
dynamic system that exhibits both continuous and discrete dynamic behavior
Control devices that involve only two control mechanisms
control devices that involve combinations of control mechanisms
NONE
- 2. Fill in the Blank
Two Examples for Hybrid system ________________ and ______________
- 3. Fill in the Blank
What are the two area of applications of WEP
- 4. Multiple Choice
what is not a Disadvantages of the WEP ?
Low gas absorption efficiency
Sensitivity to changes in flow rate
Dust collection is wet
Simultaneous gas absorption and dust removal
- 5. Multiple Choice
The collected liquid droplets form a continuous _________over the collection plates.
spiral
centrifugal
downward
projectile
- 6. Fill in the Blank
What are the different types of scrubbers?
- 7. Multiple Choice
The lime is slurried with water to approx ____ by weight of the total mixture.
25%
15%
8.5%
7.5%
- 8. Multiple Choice
The dry alkali absorbent most commonly used___
CaO
Ca(OH)2
CaCO3
None
- 9. Fill in the Blank
The first commercial electrostatic precipitator was installed in North Wales in _____________
- 10. Fill in the Blank
Poor alignment of electrodes falls under_____ problem
- 11. Fill in the Blank
failure to empty hoppers falls under_____ problem
- 12. Multiple Choice
__________ doesnót fall under Operational Problems
process changes
poor electrical settings
mismatched power supply to load,
None
- 13. Fill in the Blank
Name two chemical industry which uses ESP
- 14. Fill in the Blank
In Chemical Industry, Precipitators have been used to collect ________ acid mists and to remove particulates
- 15. Fill in the Blank
What would be the area of collecting plates_____?
- 16. Fill in the Blank
what are three types of fabric filter cleaning methods_______
- 17. Fill in the Blank
Industrial example of Baghouse dust collector ____________
- 18. Fill in the Blank
What are the major steps by which particles/droplets in the precipitation is removed?
- 19. Multiple Choice
what is not a type of single-stage electrostatic precipitators ?
single-stage flat surface type
single-stage tubular type
single-stage annular type
None of the above
- 20. Fill in the Blank
For a duct precipitator of plate length and height (L and H), What is the area ?
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