MDE 16 End of Unit Quiz

MDE 16 End Of Unit Quiz

1 / 12

Question 4:

How can a malfunctioning water pump lead to overheating, and what is the recommended solution?

D) It can cause excessive exhaust temperature; adjust the timing

B) It can restrict coolant flow; replace the water pump

A) It can cause coolant to leak; replace the water pump

C) It can increase oil temperature; replace the oil filter

2 / 12

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

B. Insufficient air supply

E. Improper fuel timing

D. Coolant leak into the combustion chamber

A. Excessive fuel injection

C. High lubricating oil pressure

3 / 12

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

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

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

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

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

4 / 12

Question 3:

What is a potential cause of unstable engine speed related to the engine's electronic control system?

C) Leaking cylinder head gasket

B) Faulty engine control unit (ECU)

D) Low battery voltage

A) Worn timing belt

5 / 12

Question 3:

Which of the following is a potential reason for fluctuating oil levels in the main engine sump during operation?

B. Oil pump malfunction

C. Variations in engine load

A. Excessive blow-by gases

D. Worn-out main bearings

6 / 12

Question 5:

Which of the following scenarios could lead to a false high oil level reading in the main engine sump?

C. Improperly seated dipstick

B. Overfilled oil sump

A. Cold engine oil

D. Engine running at full speed

7 / 12

Question 1:
What is the primary function of a fluid coupling in a marine propulsion system?

brake

B) To allow for smooth transmission of power by using fluid dynamics

C) To reduce fuel consumption by controlling engine speed

A) To provide a direct mechanical connection between the engine and the propeller

8 / 12

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

D. Decreasing the engine load

A. Increasing the fuel injection pressure

B. Regularly balancing the turbocharger rotor assembly

C. Using a larger air filter

9 / 12

Question 1: What is the first step to take upon discovering a leaking cylinder air start valve while the engine is running?

A) Continue normal operation until the next scheduled maintenance

B) Increase the engine speed to reduce air leakage

C) Shut down the engine and isolate the affected cylinder

D) Manually operate the valve to clear the leak

10 / 12

Question 2:

Before departure, which of the following actions should be taken to ensure the correct operation of the main engine cooling water system?

C. Check for any leaks in the cooling water system

B. Verify the correct operation of the cooling water pumps

D. All of the above

A. Inspect the cooling water level in the expansion tank

11 / 12

Question 2:
What immediate action should be taken if the air start pipework is becoming extremely hot?

D. Reduce the engine speed to lower the temperature

A. Increase the air pressure to the air start system

C. Check for and clear any obstructions in the pipework

B. Cool the pipework with water or air

12 / 12

Question 3:

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

D) Clean the air filter

B) Add coolant to the system

C) Flush the coolant

A) Replace the radiator cap

Your score is