Multiple choice

Which of the following mechanisms is used in petrol engine?

  1. Spark plug

  2. Propeller

  3. Compression

  4. Turboprop
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Petrol engines (spark-ignition engines) rely on a spark plug to ignite the fuel-air mixture. Diesel engines, by contrast, use compression ignition.

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