Question

A petrol engine, during suction stroke draws __________

(a) air only

(b) petrol only

(c) a mixture of petrol and air

(d) none of the mentioned

I got this question by my school teacher while I was bunking the class.

This interesting question is from Comparison of Two Stroke S.I. and C.I. Engines topic in portion Two Stroke Engines of IC Engine

Answer 1

The correct answer is:

(c) a mixture of petrol and air

 Explanation:

In a petrol engine (spark-ignition engine), during the suction stroke, a mixture of air and petrol (gasoline) is drawn into the combustion chamber. This mixture is prepared by the carburetor (in older engines) or fuel injector (in modern engines). The air-fuel mixture is then compressed and ignited by a spark plug for combustion.

Feel free to ask more questions if you need further clarification!