The efficiency of this engine is 25%.
How do you calculate energy efficiency?
- Efficiency is essentially a measurement of the amount of labor or energy that may be saved throughout a process. In other words, it's similar to comparing the energy intake and output in any particular system.
- For instance, we see that many processes result in the loss of effort or energy like vibration or waste heat.
- The energy efficiency is calculated by dividing the energy output by the energy input, then expressing the result in percentage form. In a similar vein, a perfect process is said to have a 100% efficiency.
- By dividing the energy input and output by 100%, we can determine anything's efficiency. This equation is typically used to represent energy that takes the form of heat or power.
Given details :
Qinn - 12,000 j
Qout - 9000 j
By applying formula
η = W/Qinn
= (Qinn-Qut)/Qinn
= = (12000-9000)/12000
= 1/4 = 25%
Learn more about efficiency refer to :
https://brainly.com/question/16311666
#SPJ1
