MDE 15 End of Unit Quiz

MDE 15 End Of Unit Quiz

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Question 3:

Which tool is commonly used to measure the wear of the cylinder liner?

A) Vernier caliper

C) Dial indicator

B) Micrometer gauge

D) Bore gauge

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Question 4:

During inspection, if the piston shows signs of excessive carbon build-up, what should be the next step?

A) Sandblast the piston to remove the carbon

D) Replace the piston with a new one

C) Ignore the build-up if it’s not affecting performance

B) Use a chemical carbon remover to clean the piston

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Question 3:

What should be checked if the inner diameter of the cylinder liner is found to be out of tolerance during calibration?

D) Ignore the deviation if it is minimal

C) Reface the liner to bring it within tolerance

B) Recheck the measurement for accuracy

A) Replace the cylinder liner immediately

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Question 5:

During the inspection of the piston, what should be checked for proper condition?

A) Piston skirts

B) Crankshaft journals

C) Valve seats

D) Flywheel condition

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4. What should be done with the coolant before removing the cylinder head?

C) Top off the coolant to prevent air pockets.

B) Drain the coolant to prevent it from spilling into the cylinders.

D) Add an inhibitor to the coolant system.

A) Leave the coolant in place to protect the system.

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Question 5:
Which of the following safety equipment is recommended when removing a cylinder head from a four-stroke diesel engine?

C) Safety goggles and a hard hat

D) Breathing apparatus

A) Ear protection

B) Welding gloves

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Question 4:
Before removing a cylinder head on a four-stroke diesel engine, why should the cooling system be drained?

B) To ensure the cooling system is clean

A) To prevent coolant contamination

C) To avoid leakage into the combustion chamber

D) To lower the engine’s temperature

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Question 2:

Which component must be removed to access the bottom end bearings of a diesel engine?

D) The camshaft

B) The cylinder head

A) The oil pan

C) The intake manifold

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Question 1:

What is the first step to take when preparing to remove a four-stroke diesel engine cylinder head?

C) Disconnect the cooling system

A) Remove the fuel injectors

B) Lock the engine turning gear

D) Release stored energy, including air and hydraulic pressures

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Question 4:

Why is it important to check for any unusual noises during the initial startup of an engine with a new liner?

B) To detect any potential misalignment or improper fitting of components

D) To verify that the engine is operating at full power

A) To confirm that the engine is operating efficiently

C) To ensure that the fuel system is functioning correctly

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Question 3:

If a cylinder liner shows signs of excessive taper, what does this indicate?

B) Overheating issues

D) Faulty turbocharger

A) Normal wear

C) Uneven wear due to poor lubrication

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Question 2:

Why is it important to ensure that the engine has adequate oil pressure before starting it for the first time?

D) To improve fuel efficiency

A) To ensure proper cooling

C) To protect the engine from damage

B) To prevent engine overheat

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