Question

What is an internal combustion engine?

(a) An engine that absorbs power by burning air+ water in a closed chamber

(b) An engine that generates power by burning air+ fuel in a closed chamber

(c) An engine that generates power by burning air+ fuel in an open chamber

(d) An engine that absorbs power by burning air+ water in an open chamber

The question was posed to me in a national level competition.

This question is from Internal Combustion Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

Answer 1

The correct answer is (b) An engine that generates power by burning air+ fuel in a closed chamber

The explanation is: Internal combustion engines are the engine that generates power by burning air and fuel (petrol, diesel, kerosene, etc..) in a closed chamber. Nothing can burn in the presence of water because water is a fire extinguisher.