MDE 11 Q6

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Question 1:

Which of the following methods is commonly used on board to assess the condition of lubricating oil in a large medium-speed diesel engine?

C) Onboard testing for water content and acid number

D) Smelling the oil for any burnt odors

B) Laboratory analysis of oil samples

A) Visual inspection of the oil’s color

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Question 3:

How can the presence of water in the lubricating oil be detected on board a vessel?

C) By measuring the oil's density

A) By checking the oil’s color and odor

D) By observing the oil pressure gauge readings

B) By conducting a crackle test

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Question 5:

Which onboard test can be used to assess the viscosity of lubricating oil in a medium-speed diesel engine?

C) Blotter spot test

B) Viscometer test

A) Crackle test

D) Flashpoint test

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Question 4:

Which of the following actions can prevent the deterioration of lubricating oil in a large medium-speed diesel engine?

D) Reducing the engine’s load

A) Using a low-quality oil

C) Allowing the engine to run with contaminated oil

B) Regularly replacing the oil filters

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Question 2:

What is the main purpose of using a centrifugal separator in a large medium-speed diesel engine's lubricating oil system?

D) To add additives to the oil

C) To increase the oil's viscosity

A) To cool the lubricating oil

B) To remove water and particulate contaminants from the oil

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Question 3:

How is the condition of lubricating oil in a large medium-speed diesel engine typically monitored?

B) By regularly testing the oil's viscosity, water content, and acid number

A) By visually inspecting the oil color

C) By smelling the oil for unusual odors

D) By observing the oil pressure gauge readings

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Question 2:

What is the purpose of conducting a blotter spot test on lubricating oil on board?

B) To assess the oil's viscosity

C) To detect the presence of contaminants such as soot and water

D) To measure the oil's acid number

A) To determine the oil's flashpoint

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Question 1:

Which of the following practices is essential to maintain the lubricating oil in optimum condition in a large medium-speed diesel engine?

B) Periodically cleaning the oil using a centrifugal separator

C) Allowing the oil to settle in the sump for long periods

D) Increasing the engine's operating temperature

A) Regularly changing the oil with fresh oil

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Question 4:

Why is it important to regularly measure the Total Base Number (TBN) of lubricating oil on board?

A) To determine the oil’s viscosity

D) To verify the oil's temperature resistance

C) To check for the presence of water

B) To assess the oil’s ability to neutralize acids

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