Aux 1 Unit 8 Q3

1 / 10

What is the purpose of using desiccant breathers on hydraulic reservoirs?

B) To prevent moisture from entering the reservoir by absorbing humidity from the air

D) To increase the flow rate of the hydraulic fluid

A) To increase the temperature inside the reservoir

C) To add more fluid to the reservoir

2 / 10

What is a common cause of air bubbles entering a hydraulic system?

A) Overheating of hydraulic fluid

B) Leaks in the suction line or improper bleeding of the system

C) Using high-quality hydraulic fluid

D) Excessive system pressure

3 / 10

How can water contamination typically occur in a hydraulic system?

B) By using synthetic hydraulic fluid

D) By increasing the system temperature

C) By operating the system in a dry environment

A) Through condensation inside the hydraulic reservoir or by leaks allowing moisture ingress

4 / 10

How can air bubbles be prevented from affecting a hydraulic system?

A) By increasing the system pressure

D) By adding more hydraulic fluid

C) By using oil-based fluids only

B) By properly bleeding the system and ensuring all connections are airtight

5 / 10

Which of the following contaminants can lead to wear and damage in a hydraulic system?

A) Dust and dirt particles

D) Sound waves

B) Ozone

C) Nitrogen gas

6 / 10

What is a common method to prevent dust and dirt particles from contaminating a hydraulic system?

B) By installing high-quality filters and maintaining a clean work environment during maintenance

C) By increasing the fluid temperature

D) By operating the system at lower pressures

A) By using higher viscosity hydraulic fluid

7 / 10

What is a typical cause of dust and dirt particles contaminating a hydraulic system?

D) Operating the system in a clean room environment

A) Poorly sealed hydraulic reservoir or dirty maintenance tools

C) Overpressurizing the system

B) Using filtered hydraulic fluid

8 / 10

Which of the following is a common type of contamination in a hydraulic system?

B) Air bubbles

C) Electrical currents

D) Vibration

A) Pure water

9 / 10

What is another possible contaminant in a hydraulic system that can cause corrosion?

A) Oil mist

C) Pure nitrogen

B) Separated water

D) Carbon monoxide

10 / 10

How can water contamination be prevented in a hydraulic system?

D) By using water-based hydraulic fluids

A) By regularly draining water from the system and using a dehumidifier or breather filter on the reservoir

B) By increasing the system pressure

C) By reducing the operating temperature

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