MDE 10 Q6

1 / 9

Question 5: What role does maintaining proper oil levels play in keeping diesel engine lubricating oil in a satisfactory condition?

D) It prevents the mixing of different oil types.

C) It ensures adequate lubrication of engine components.

B) It reduces the chance of thermal degradation.

A) It prevents oil dilution.

2 / 9

Question 1: What is a common cause of water contamination in diesel engine lubricating oil during service on a marine vessel?

D) Oxidation of the oil

C) Inadequate filtration

A) Fuel dilution

B) Condensation of water vapor

3 / 9

Question 4: Which of the following is a recommended action to prevent the oxidation of diesel engine lubricating oil?

A) Increasing the oil pressure

C) Using the engine at low RPMs

B) Keeping the oil free from moisture

D) Mixing different types of oil

4 / 9

Question 2: Which of the following contaminants is most likely to enter diesel engine lubricating oil due to wear and tear of engine components?

C) Microbial growth

A) Saltwater

B) Metallic particles

D) Carbon deposits

5 / 9

Question 2: Which of the following practices is essential for preventing contamination of diesel engine lubricating oil?

A) Using a higher grade of oil

B) Regular oil analysis and monitoring

C) Adding additives regularly

D) Changing oil only when the engine is cold

6 / 9

Question 3: Which factor is a primary contributor to fuel dilution in diesel engine lubricating oil during service?

C) Inadequate oil pressure

B) High operating temperature

A) Prolonged idling of the engine

D) Oxidation of the oil

7 / 9

Question 1: What is one of the most effective methods for maintaining the condition of diesel engine lubricating oil?

D) Running the engine at low speed

B) Using synthetic oil instead of mineral oil

A) Regularly topping off the oil

C) Maintaining proper oil temperature

8 / 9

Question 4: How might microbial contamination occur in diesel engine lubricating oil during service on a marine vessel?

A) High engine operating temperature

D) Overuse of the oil

C) Presence of water in the oil

B) Use of low-quality fuel

9 / 9

Question 3: How can the accumulation of sludge and deposits in diesel engine lubricating oil be minimized?

D) Avoiding the use of additives

C) Frequently running the engine at full load

A) Using low-viscosity oil

B) Ensuring proper filtration and regular filter changes

Your score is