MDE 20 Q6

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Question 2:
How does water contamination affect the viscosity of gearbox oil?

A) It increases viscosity significantly

C) It has no effect on viscosity

D) It causes a gradual decrease in viscosity

B) It decreases viscosity significantly

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Question 5:
To prevent future water contamination of the gearbox, what preventive measure should be implemented?

B) Install proper seals and gaskets to prevent water ingress

C) Use a lower grade of oil

D) Increase the gearbox's operating temperature

A) Increase the frequency of oil changes

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Question 3:
How can you confirm that the gearbox has been properly cleaned and the contamination removed?

D) By conducting a thorough inspection and ensuring no water remains

C) By running the gearbox and inspecting for leaks

A) By checking the oil level

B) By measuring the temperature during operation

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Question 2:
After draining the contaminated oil from the gearbox, what should be done next?

D) Wait for the gearbox to dry naturally

A) Replace it with fresh, clean oil

B) Add a chemical treatment to neutralize the water

C) Perform a visual inspection of the gearbox

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Question 4:
What should be done if there is evidence of damage to the gearbox components due to water contamination?

C) Apply a sealant to prevent further leaks

B) Perform an immediate repair or replacement of damaged components

A) Continue using the gearbox until a scheduled maintenance

D) Reduce the gearbox load to minimize damage

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Question 1:
What is the first step to take if you discover water contamination in the gearbox oil?

B) Increase the operating temperature to evaporate the water

C) Drain the contaminated oil from the gearbox

D) Add a water-soluble additive to the oil

A) Continue operating the gearbox to check for changes

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Question 1:
What is one of the primary effects of water contamination in gearbox oil?

D) Reduced oil viscosity

B) Increased friction and wear

C) Enhanced thermal conductivity

A) Improved lubrication properties

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Question 5:
What should be done if water contamination is detected in the gearbox oil?

D) Increase the operating temperature to evaporate the water

A) Continue operation as normal

C) Add more oil to dilute the contamination

B) Drain the contaminated oil and replace it with fresh oil

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Question 3:
What is a common consequence of water contamination in gearbox oil on the gears?

D) Reduced gear noise

C) Enhanced gear meshing efficiency

B) Corrosion and rust formation

A) Improved gear tooth strength

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Question 4:
What is one of the potential effects of water contamination on the operational performance of a gearbox?

D) Enhanced load capacity

B) Increased operational temperature

A) Improved energy efficiency

C) Reduced gear backlash

Answer: B) Increased operational temperature

Explanation: Water contamination can lead to increased operational temperatures due to decreased lubrication efficiency and higher friction. This can cause overheating and potentially damage the gearbox.

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Question:
How may gearbox oil become contaminated with water?

C) By condensation forming inside the gearbox

D) Through the use of low-quality lubricants

B) By direct exposure to rain or sea spray

A) Through leaks in the cooling system

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