MDE 16 Q4

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

C. Increasing the clearance in the turbocharger housing

B. Ensuring precision alignment during turbocharger installation

D. Frequently changing the turbocharger oil

A. Using high-quality fuel filters

2 / 9

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

C. Ensuring regular cleaning of the turbine and compressor blades

D. Operating the engine at low speeds consistently

A. Avoiding high-sulfur fuels

B. Using oil with low viscosity

3 / 9

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

D) Blocked air intake filter

A) Inadequate fuel injection timing

C) Excessive lubricating oil pressure

B) Loose or damaged turbine blades

4 / 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

B. Regularly balancing the turbocharger rotor assembly

C. Using a larger air filter

D. Decreasing the engine load

5 / 9

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

6 / 9

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

A) Increasing the fuel injection pressure

C) Reducing the exhaust temperature

D) Using lower grade lubricating oil

7 / 9

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

A) Insufficient fuel supply

C) Overheating of the turbocharger housing

D) Low turbocharger speed

B) Build-up of deposits on the turbine wheel

8 / 9

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

A) Excessive air filter cleanliness

C) Perfect alignment of the turbocharger housing

B) Worn bearings in the turbocharger

D) Correct fuel-air mixture

9 / 9

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

B. Ensuring adequate lubrication and regular inspection of turbocharger bearings

A. Increasing the engine operating temperature

C. Reducing the turbocharger's rotational speed

D. Using a different fuel type

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