MDE 16 End of Unit Quiz

MDE 16 End Of Unit Quiz

1 / 12

Question 1:

What is a common cause of diesel engine overheating related to the cooling system?

A) Faulty fuel injectors

D) Excessive exhaust back pressure

C) Clogged radiator or coolant passages

B) Low oil pressure

2 / 12

Question 2:
Which of the following could lead to abnormal turbocharger vibration in a diesel engine operating at a steady speed?

C) Misalignment of the turbocharger shaft

D) Incorrect coolant mixture

B) Water contamination in the fuel

A) High exhaust back pressure

3 / 12

Question:
What is a common remedy for improving cold starting of marine diesel engines?

D. Clean the fuel injectors

A. Increase the engine speed

B. Use a higher viscosity engine oil

C. Ensure the use of preheaters or glow plugs

4 / 12

Question:
Which of the following is an effective remedy for excessive fuel injection in marine diesel engines?

C. Replace the fuel injectors

D. Reduce the fuel pump delivery rate

B. Increase the engine speed

A. Adjust the fuel injection timing

5 / 12

Question 5:
To reduce the likelihood of abnormal turbocharger vibration, which of the following should be done during routine maintenance?

A) Operate the engine at lower than recommended speeds

C) Increase the lubricating oil viscosity

D) Block off the air intake partially

B) Inspect for and promptly replace damaged or loose turbine blades

6 / 12

Which of the following are possible causes for blue smoke in marine diesel engines? (Select TWO)

D. Worn piston rings

B. Burning of lubricating oil

C. Excessive fuel injection

A. Overheating of the engine

E. Insufficient air supply

7 / 12

Question 1: Which of the following is a potential cause of high bearing temperatures in a diesel engine?

D) Oversized bearing clearance

A) Excessive lubricating oil flow

C) Low ambient temperature

B) Improper alignment of the bearing

8 / 12

Question 2:

What might cause the oil level in a main engine sump to rise unexpectedly?

D. Air intake restriction

C. Faulty oil pressure gauge

A. Water contamination in the oil

B. Blocked oil filter

9 / 12

Question 1:

Which of the following checks should be performed on the main propulsion system's lubricating oil system before going to sea?

B. Confirm that the lubricating oil filters are clean and operational

A. Ensure that the lubricating oil is at the correct temperature

D. All of the above

C. Verify that the lubricating oil level is within the acceptable range

10 / 12

Question 5:

If a diesel engine is overheating due to excessive engine load, what should be done to remedy the situation?

D) Clean the fuel injectors

C) Adjust the air intake

B) Increase the fuel supply

A) Reduce engine load

11 / 12

Question 1:
Which of the following is an effective way to minimize the risk of abnormal turbocharger vibration in a diesel engine?

B) Ensuring proper alignment of the turbocharger shaft

C) Reducing the exhaust temperature

D) Using lower grade lubricating oil

A) Increasing the fuel injection pressure

12 / 12

Question 4:
How can you minimize abnormal turbocharger vibration caused by shaft misalignment?

C) By increasing the exhaust back pressure

D) By reducing the turbocharger's rotational speed

B) By regularly checking and adjusting the shaft alignment

A) By using a thicker grade of lubricating oil

Your score is