NAVTTC Auto Mechanic Practice Questions - NAVTTC Trade Test - Auto Mechanic Motor Vehicle Mechanic (Pakistan) Exam

What is the main purpose of a spark plug in a petrol engine?

To spray pressurized fuel into the cylinder To ignite the compressed air-fuel mixture To monitor the oxygen content in the exhaust To heat the engine block before starting

Correct Answer:

To ignite the compressed air-fuel mixture

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