MDE 20 Q6

Answer: B) Perform an immediate repair or replacement of damaged components

Explanation: If damage is evident, it is crucial to perform immediate repairs or replace damaged components to prevent further issues and ensure the gearbox operates properly.

Answer: B) Corrosion and rust formation

Explanation: Water contamination can lead to corrosion and rust formation on the gears and internal components, as water reacts with metal surfaces and forms rust.

Answer: B) Increased friction and wear

Explanation: Water contamination in gearbox oil can cause increased friction and wear because it reduces the oil's lubricating properties, leading to metal-to-metal contact and accelerated wear of gear components.

Answer: B) It decreases viscosity significantly

Explanation: Water contamination dilutes the oil, causing a significant decrease in viscosity. This reduction in viscosity impairs the oil’s ability to properly lubricate and protect the gears.

Answer: C) Drain the contaminated oil from the gearbox

Explanation: The immediate action is to drain the contaminated oil to remove the water and any impurities, preventing further damage to the gearbox.

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.

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

Explanation: The appropriate action when water contamination is detected is to drain the contaminated oil and replace it with fresh oil. This prevents further damage and restores proper lubrication.

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

Explanation: A thorough inspection should be performed to confirm that all water has been removed and that the gearbox is in good condition before putting it back into service.

Answer: B) Install proper seals and gaskets to prevent water ingress

Explanation: To prevent future contamination, it's important to ensure that proper seals and gaskets are installed to prevent water from entering the gearbox.

Answer: A) Replace it with fresh, clean oil

Explanation: After draining the contaminated oil, fresh, clean oil should be added to ensure proper lubrication and protection for the gearbox components.

Answer: C) By condensation forming inside the gearbox

Explanation: Gearbox oil can become contaminated with water through condensation that forms inside the gearbox, especially if the gearbox is not sealed properly or if temperature fluctuations cause moisture to condense. This is a common issue in environments with high humidity or where temperature changes occur frequently.