MDE 16 Q4

1 / 9

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

C) Reducing the exhaust temperature

D) Using lower grade lubricating oil

A) Increasing the fuel injection pressure

B) Ensuring proper alignment of the turbocharger shaft

2 / 9

Question 3:
Abnormal turbocharger vibration while operating at a steady speed could be caused by:

A) Insufficient fuel supply

B) Build-up of deposits on the turbine wheel

D) Low turbocharger speed

C) Overheating of the turbocharger housing

3 / 9

Question 1:
What is a potential cause of abnormal turbocharger vibration at a steady speed in a diesel engine?

A) Inadequate fuel injection timing

B) Loose or damaged turbine blades

C) Excessive lubricating oil pressure

D) Blocked air intake filter

4 / 9

Question 4:
What might cause abnormal turbocharger vibration at a steady speed in a diesel engine?

A) Excessive air filter cleanliness

D) Correct fuel-air mixture

C) Perfect alignment of the turbocharger housing

B) Worn bearings in the turbocharger

5 / 9

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

A) High exhaust back pressure

D) Incorrect coolant mixture

B) Water contamination in the fuel

C) Misalignment of the turbocharger shaft

6 / 9

Question 4:
What is the most effective way to reduce the risk of abnormal turbocharger vibration caused by misalignment during assembly?

D. Frequently changing the turbocharger oil

A. Using high-quality fuel filters

B. Ensuring precision alignment during turbocharger installation

C. Increasing the clearance in the turbocharger housing

7 / 9

Question 3:
How can the likelihood of abnormal turbocharger vibration due to bearing wear be minimized?

A. Increasing the engine operating temperature

C. Reducing the turbocharger's rotational speed

D. Using a different fuel type

B. Ensuring adequate lubrication and regular inspection of turbocharger bearings

8 / 9

Question 2:
What maintenance practice can help prevent abnormal turbocharger vibration caused by fouling?

D. Operating the engine at low speeds consistently

A. Avoiding high-sulfur fuels

C. Ensuring regular cleaning of the turbine and compressor blades

B. Using oil with low viscosity

9 / 9

Question 1:
Which of the following is a method to minimize the risk of abnormal turbocharger vibration due to unbalanced rotors?

A. Increasing the fuel injection pressure

D. Decreasing the engine load

C. Using a larger air filter

B. Regularly balancing the turbocharger rotor assembly

Your score is