What is meant by an engine's efficiency being 30%? Md. Saifur Rahman What is meant by an engine's efficiency being 30%? By an engine's efficiency is 30% it is meant that if 100 J energy is given as input to the engine, it gives 30 J usable output energy. You may like Why does a mountaineer feel the blood in the nose at too much height? What do you mean by 1 pascal? Why does water boil faster in the electric kettle? The conductivity of any conductor depends on which factors? What do you understand by 1 V potential difference?
