CPE649: AIR POLLUTION CONTROL

There are two types of cyclone which are single and multicyclone

• True
• False

Which of the following is used in ceramic industries?

• Electrostatic precipitator
• Dynamic precipitator
• Spray tower
• Wet cyclonic scrubber

Wet scrubbers are classified into ____ types.

• 2
• 3
• 5
• 6

The centrifugal collectors are classified into how many types?

• 3
• 4
• 5
• 2

Which of the following air pollution control device has maximum efficiency?

• Electrostatic precipitator
• Dynamic precipitator
• Spray tower
• Wet cyclonic scrubber

Which of the following is incorrect regarding the fabric filter?

• They can remove very small particle
• They are liable to chemical attack
• They have low efficiency in comparison to venturi scrubber
• They can handle large volume of gas at relatively high speed

Which of the following removes both gaseous and particulate contaminants?

• Venturi scrubber
• Gravitational settling chamber
• Dynamic precipitator
• Wet scrubber

Which of the following statement is correct regarding the electrostatic precipitator.

• Minimum particle size removal is <0.5μm
• They can be operated at high temperature
• It has a low maintenance cost
• It can operate continuously with little maintenance

Which of the following air pollution control devices is suitable for the removing the finest dust from the air?

• Cyclone separator
• Electrostatic precipitator
• Fabric filter
• Wet scrubber

Which of the following is NOT the advantages of cyclone?

• Cheap
• Low maintenance
• Suitable for liquid mist
• Suitable for low temperature