Aux 1 Unit 8 Q3

1 / 10

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

A) Poorly sealed hydraulic reservoir or dirty maintenance tools

B) Using filtered hydraulic fluid

D) Operating the system in a clean room environment

C) Overpressurizing the system

2 / 10

How can water contamination typically occur in a hydraulic system?

B) By using synthetic hydraulic fluid

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

D) By increasing the system temperature

C) By operating the system in a dry environment

3 / 10

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

D) Vibration

C) Electrical currents

A) Pure water

B) Air bubbles

4 / 10

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

D) Carbon monoxide

A) Oil mist

C) Pure nitrogen

B) Separated water

5 / 10

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

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

D) By adding more hydraulic fluid

A) By increasing the system pressure

C) By using oil-based fluids only

6 / 10

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

D) By operating the system at lower pressures

C) By increasing the fluid temperature

A) By using higher viscosity hydraulic fluid

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

7 / 10

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

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

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

8 / 10

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

C) Nitrogen gas

B) Ozone

D) Sound waves

A) Dust and dirt particles

9 / 10

How can water contamination be prevented in a hydraulic system?

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

C) By reducing the operating temperature

D) By using water-based hydraulic fluids

B) By increasing the system pressure

10 / 10

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

D) Excessive system pressure

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

C) Using high-quality hydraulic fluid

A) Overheating of hydraulic fluid

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