MDE 14 End of Unit Quiz

MDE 14 End Of Unit Quiz

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Question 5:
During a routine check, what should be done if moisture is found in the air motor's air supply line?

A) Replace the entire air supply line

D) Lubricate the air motor components more frequently

B) Drain the moisture and inspect the air dryer or moisture separator

C) Increase the air pressure to blow out the moisture

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Question 3:

Which interlock is commonly found in a diesel engine hydraulic oil start system to ensure safe operation?

C) Coolant temperature gauge

B) Hydraulic fluid level sensor

A) Engine oil pressure switch

D) Fuel pressure regulator

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Question 1:
Which of the following interlocks is most commonly fitted to a direct air start medium-speed diesel engine to prevent the engine from starting if the turning gear is engaged?

B) Turning gear engagement interlock

C) Lube oil pressure interlock

D) Fuel injection interlock

A) Over-speed trip interlock

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Question 3:
Why is it important to inspect the condition of the air motor’s drive gear during routine maintenance?

C) To verify the air motor's air intake is clear

B) To ensure the gear is properly aligned with the engine's flywheel

A) To check for signs of overheating

D) To confirm the air pressure is within the specified range

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Question 1:

What is the primary function of the solenoid in a solenoid-operated, battery-powered electric starting system?

C) To monitor the engine’s oil pressure

B) To engage the starter motor with the engine’s flywheel

D) To cool the battery during operation

A) To regulate the fuel flow to the engine

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Question 6:

Which component prevents the starter motor from operating when the engine is already running?

D) Starter inhibitor switch

B) Ignition switch

C) Neutral safety switch

A) Starter relay

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Question 4:
What is a common sign that the air motor’s exhaust port needs to be inspected or cleaned?

C) Unusual noise from the air motor

D) Oil leaks around the air motor housing

B) Increased air pressure in the system

A) Reduced engine starting speed

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Question 4:
The low lube oil pressure interlock in a direct air start medium-speed diesel engine is designed to:

C) Ensure the fuel pumps are correctly aligned

D) Ensure that the governor is set to the correct speed

A) Prevent starting if the oil temperature is too high

B) Prevent starting if lube oil pressure is below a safe threshold

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Question 1:

What is the primary function of the hydraulic oil start system in a diesel engine?

C) To initiate the engine’s start-up by engaging the starting mechanism

D) To enhance the lubrication of engine components

A) To assist with fuel injection timing

B) To provide additional cooling to the engine

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Question 4: What should be inspected if there is air leakage during the start sequence of a marine diesel engine?

A. Fuel injection timing.

B. Starting air valve condition.

D. Turbocharger speed.

C. Piston ring clearance.

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Question 2:

Which component of the electric starting system provides the electrical power needed to turn the starter motor?

A) Alternator

C) Battery

D) Voltage regulator

B) Starter motor

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Question 2:
Which of the following is a key maintenance task for the air motor to prevent corrosion and ensure long-term reliability?

D) Adjusting the valve clearances

A) Lubricating the air motor components regularly

B) Cleaning the fuel injectors

C) Replacing the air intake filter

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