Question 1
What ignites the fuel in a compression-ignition (diesel) engine?
Correct Answer:
The heat of air compressed in the cylinder
Question 2
In a four-stroke diesel engine, in which order do the strokes occur?
Correct Answer:
Induction, compression, power, exhaust
Question 3
Why does a diesel engine use a much higher compression ratio than a petrol engine?
Correct Answer:
To generate enough heat to self-ignite the fuel
Question 4
The point in the cycle when the piston is at the very top of its travel is called:
Correct Answer:
Top dead centre (TDC)
Question 5
What is the main function of a glow plug in a diesel engine?
Correct Answer:
To pre-heat the combustion chamber air to aid cold starting
Question 1
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About this Exam

Prepare with the Diesel Mechanic Trade Test Practice Questions - South Africa Artisan Trade Test - Diesel Mechanic Exam practice quiz. This question bank includes 100 questions covering diesel, engine, fuel, injection, and pump. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Diesel Mechanic Trade Test Practice Questions - South Africa Artisan Trade Test - Diesel Mechanic Exam

This practice set contains 100 questions from the matching question bank and focuses on diesel, engine, fuel, injection, and pump. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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