MDE 16 End of Unit Quiz

MDE 16 End Of Unit Quiz

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Question 1:
What is a potential consequence of the air start pipework becoming extremely hot?

D. Reduced engine power output

C. Increased efficiency of the air start system

B. Damage to the pipework or surrounding components

A. Improved engine starting performance

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Question 2:
To prevent abnormal turbocharger vibration, it is important to regularly:

A) Change the turbocharger’s air filter

C) Increase the turbocharger's operating temperature

D) Reduce engine load during operation

B) Inspect and replace worn bearings in the turbocharger

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Question 3:
Which safety precaution should be taken when dealing with hot air start pipework?

D. Temporarily shut down the engine and allow the system to cool

B. Use insulated gloves to handle the pipework

C. Increase the air start pressure to speed up cooling

A. Allow the pipework to cool before handling

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Question 5:

If unstable engine speed is caused by a problem with the turbocharger, what should be checked?

D) Air intake temperature sensor

B) Engine coolant level

C) Exhaust manifold gasket

A) Turbocharger oil supply

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Question 3:
In a fluid coupling, what role does the impeller play?

B) It acts as the driven component, receiving power from the propeller.

A) It acts as the driving component, transmitting power from the engine.

D) It reduces the temperature of the fluid in the coupling.

C) It controls the direction of fluid flow within the coupling.

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Question 1:

Which of the following is a possible cause of knocking noise in a diesel engine during operation?

A. Incorrect fuel injection timing

B. Worn-out cylinder liner

D. Faulty air intake system

C. Low oil pressure

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Question 3:

Which of the following could cause a whining noise in a diesel engine during operation?

C. Damaged turbocharger

B. Air in the fuel system

A. Worn-out bearings

D. Faulty oil pump

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Question 3: Which of the following could be a possible cause of high bearing temperature in a diesel engine?

D) High exhaust gas temperature

A) Excessive cooling water temperature

B) Improper alignment of the bearing

C) Low fuel injection pressure

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Question 3:

What action should be taken if low coolant levels are causing engine overheating?

A) Replace the radiator cap

C) Flush the coolant

B) Add coolant to the system

D) Clean the air filter

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Question 1:

Which of the following is a common cause of a leaking cylinder air start valve?

A) Insufficient engine lubrication

D) Excessive fuel injection pressure

C) Overheating of the cylinder head

B) Worn or damaged valve seating

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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

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

D. Using a different fuel type

A. Increasing the engine operating temperature

C. Reducing the turbocharger's rotational speed

B. Ensuring adequate lubrication and regular inspection of turbocharger bearings

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