Aux 1 Unit 8 Q4

1 / 10

Which of the following is a common source of water contamination in hydraulic systems?

A) Condensation inside the hydraulic reservoir

B) Overheating of the hydraulic fluid

C) High system pressure

D) Low ambient temperature

2 / 10

How can water ingress occur through external sources in a hydraulic system?

A) By the use of synthetic hydraulic fluids

B) Through leaks in seals, fittings, or breather caps exposed to wet environments

C) By increasing the system temperature

D) Through the expansion of the hydraulic fluid

3 / 10

What is a potential consequence of water contamination in a hydraulic system?

A) Improved lubrication of components

B) Corrosion of metal components within the system

C) Increased hydraulic fluid viscosity

D) Enhanced system pressure

4 / 10

How does water contamination affect the hydraulic fluid's ability to lubricate?

A) Water contamination improves the fluid’s lubrication properties.

B) Water contamination decreases the fluid's ability to lubricate, leading to increased wear on components.

C) Water contamination has no effect on lubrication.

D) Water contamination enhances the fluid's ability to form a protective film.

5 / 10

What is the impact of water contamination on the hydraulic system's efficiency?

A) Water contamination improves system efficiency.

B) Water contamination can cause the formation of emulsions, reducing the system's efficiency.

C) Water contamination increases the flow rate of the fluid.

D) Water contamination has no impact on the system's efficiency.

6 / 10

How can water contamination lead to system malfunctions in a hydraulic system?

A) By improving fluid compressibility

B) By causing cavitation and reduced fluid flow

C) By increasing the operating temperature of the system

D) By stabilizing system pressure

7 / 10

What might be the long-term effect of water contamination in a hydraulic system if left unchecked?

A) System will self-purge the water over time

B) Gradual deterioration of system components, leading to premature failure and costly repairs

C) Improved performance due to water cooling

D) Increased system pressure and enhanced operation

8 / 10

What is the first action to take if water contamination is suspected in a hydraulic system?

A) Continue operating the system to burn off the water

B) Immediately shut down the system to prevent further damage

C) Increase the system pressure to force the water out

D) Ignore the issue and continue operation

9 / 10

What should be done to confirm the presence of water contamination in a hydraulic system?

A) Increase the fluid temperature and observe any changes

B) Take a sample of the hydraulic fluid and perform a visual inspection or laboratory analysis to detect water content

C) Lower the system pressure and monitor the operation

D) Add more hydraulic fluid to dilute the water

10 / 10

After confirming water contamination in a hydraulic system, what is an appropriate action to take?

A) Replace or clean the hydraulic fluid and address the source of water ingress

B) Add more hydraulic fluid to absorb the water

C) Increase the system pressure to push the water out

D) Ignore the contamination and continue operation

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