UPMSP High School Automobile Practice Questions - Uttar Pradesh UPMSP High School (Class 10) Automobile - Code 973 Exam

What is the primary function of a spark plug in a petrol (SI) engine?

To ignite the compressed air-fuel mixture using an electric spark To inject diesel fuel into the combustion chamber under high pressure To pump engine oil throughout the lubricating passages To cool the compressed air before entering the intake manifold

Correct Answer:

To ignite the compressed air-fuel mixture using an electric spark

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