Efficiency is a measure of how well a machine converts energy into useful forms.Efficiency is useful work done ÷ total energy input.Efficiency can be found using either power or energy.Efficiency is useful power output ÷ total power input.
Since efficiency is a ratio of the useful work performed by a machine or process to the total energy expended (or heat taken in) it can be expressed as a decimal or a percentage.Efficiency is always less than 100%.
Since efficiency is a ratio of the useful work performed by a machine or process to the total energy expended (or heat taken in) it can be expressed as a decimal or a percentage.Efficiency is always less than 100%.