What is efficiency? Why is it important for cars or electronic devices to be designed with high efficiency? Why can the efficiency of machines never be unity or 100%?
Efficiency is a measure of how well a machine or system converts the input energy or work into useful output energy or work. It is the ratio of useful energy output to the total energy input, usually expressed as a percentage. Mathematically, efficiency (η\etaη) is given by the formula: η=Useful energy output/Total energy input×100 Importance … Read more