Efficiency of a Machine
What is the energy input and the useful work output of a machine that has an efficiency of 90%?
Your answer is Energy input = 100%, Useful work output = 90%
Understanding Machine Efficiency
Machine efficiency is a measure of how well a machine converts energy input into useful work output. In this case, if a machine has an efficiency of 90%, it means that 90% of the energy input is converted into useful work output. Therefore, the energy input is considered to be 100% and the useful work output is 90%.
Efficiency can be calculated using the formula:
Efficiency = (Useful work output / Energy input) x 100%
So, for a machine with an efficiency of 90%, the energy input is 100% and the useful work output is 90%. This means that 90% of the energy input is converted into useful work output, resulting in an efficiency of 90%.