PrintThe questions below are your chance to test and practice your understanding of the content covered in this lesson. In other words, you should be able to answer the following questions if you know the material that was just covered! If you have problems with any of the items, feel free to post your question on the unit message board so your classmates, and/or your instructor, can help you out!
- A heat engine has Carnot efficiency of 30%. Useful output from the engine is 1000J. How much heat is wasted?
- How can we improve the Carnot efficiency of a heat engine by changing the hot and cold reservoir temperatures?
- Most of the energy conversion devices that we use in our day-to-day life can be classified as Heat Engines. Give two examples.
- The following diagram shows the energy flow to and from a furnace. Calculate the efficiency of the furnace. Show your work very clearly.