Aux 2 Unit 11 Quiz 5

Aux 2 Unit 11 Q5

1 / 8

Why are multi-stage compressors preferred over single-stage compressors for high-pressure applications like SCUBA diving?

D) They use less power

C) They are easier to maintain

A) They are more compact

B) They allow for gradual pressure increases, improving efficiency and safety

2 / 8

In a three-stage air compressor system, what happens to the air during the third stage?

A) The air is compressed to its final high pressure and discharged

B) The air is expanded to reduce pressure

D) The air is cooled for use at lower pressure

C) The air is filtered and released without further compression

3 / 8

What is the primary purpose of using a three-stage air compressor system for SCUBA diving equipment?

C) To decrease the air pressure for underwater use

B) To ensure the air is compressed to a safe, high pressure suitable for SCUBA tanks

D) To eliminate all moisture from the air

A) To reduce the temperature of the air

4 / 8

What is the typical sequence of air flow in a three-stage air compressor system?

D) Cooling, heating, compression

B) Intake, first-stage compression, intercooling, second-stage compression, intercooling, third-stage compression, discharge

A) Compression, expansion, cooling

C) Filtering, expansion, discharge

5 / 8

What safety feature is typically included in a three-stage compressor to prevent over-pressurization?

A) Temperature sensor

C) Water cooling system

D) Noise suppressor

B) Pressure relief valve

6 / 8

Why is it important for the three-stage compressor system to include moisture separators?

A) To increase the pressure of the compressed air

B) To prevent water vapor from causing corrosion or freezing in the air supply system

C) To add moisture for enhanced breathing comfort

D) To boost the efficiency of the compressor

7 / 8

What is a key function of the intercooler in a three-stage air compressor system?

A) To heat the air between stages

C) To filter out oil particles

B) To cool the air between compression stages to reduce the load on the next stage

D) To regulate the air pressure

8 / 8

What is the role of the final filter in a three-stage air compressor system for SCUBA?

C) To remove remaining oil and particulates before the air is used or stored

B) To add moisture to the air for comfort

D) To lower the temperature of the air significantly

A) To increase the pressure of the air

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