MDE 15 End of Unit Quiz

MDE 15 End Of Unit Quiz

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Question 6:

During initial startup, why is it important to monitor the engine for unusual noises or vibrations?

D) To adjust the timing

C) To check the exhaust emissions

B) To ensure the engine runs smoothly

A) To detect fuel leaks

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Question 5:

What is a recommended practice for the first engine oil change after installing a new cylinder liner?

D) Skip the initial oil change if the oil looks clean

A) Change the oil immediately after the first startup

B) Wait until the engine has run for a specified number of hours before changing the oil

C) Perform the oil change at the end of the first day of operation

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Question 2:

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

A) The oil pan

B) The cylinder head

D) The camshaft

C) The intake manifold

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Question 5:

What is the significance of checking the piston for signs of piston ring land deformation during inspection?

A) To determine if the piston has proper thermal conductivity

D) To assess the piston’s resistance to corrosion

C) To check if the piston is aligned correctly with the crankshaft

B) To verify the piston’s ability to maintain proper compression

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Question 1:

What is the first precaution to take before starting an engine for the first time after maintenance?

C) Test the exhaust system

A) Check the fuel level

B) Verify all bolts and fasteners are properly tightened

D) Ensure the engine is at operating temperature

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Question 2:

What should be done if the piston’s ring grooves show excessive wear during inspection?

A) Replace the piston rings only

C) Replace the piston and rings together

D) Clean the piston and reuse it

B) Reface the piston to reduce wear

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Question 3:

What should be checked regarding the cooling system before an initial engine startup?

C) Test the fuel injectors

D) Check the battery charge

B) Verify the exhaust system is clear

A) Ensure the coolant is at the correct level

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Question 5:

What is a common method to check for warping or distortion in a cylinder liner during calibration?

D) Measure the hardness of the liner material

A) Measure the liner’s length in different orientations

C) Inspect visually for color changes

B) Use a dial gauge to measure any deviations from the cylindrical shape

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Question 6:

What fault might be detected in a cylinder liner that suggests coolant leakage?

A) Corrosion on the exterior of the liner

D) Cracked piston rings

B) Deposits of carbon on the piston crown

C) Darkened oil with a milky appearance

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Question 5:

Before starting an engine for the first time after maintenance, why is it important to check the oil level and quality?

A) To reduce engine noise

B) To ensure proper lubrication and performance

D) To increase engine power

C) To improve fuel consumption

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Question 2:

What is a typical fault observed on a piston that might indicate engine problems?

A) Crankshaft endplay

B) Worn piston rings

C) Bent push rods

D) Damaged valve seats

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Question 6:

If a cylinder liner is found to be out of specification after calibration, what is a typical corrective action?

C) Refurbish or replace the liner

D) Ignore the issue if performance is not affected

A) Adjust the engine’s operating parameters

B) Reinstall the liner without further changes

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