A heat engine takes in 800 J from the hot reservoir and rejects 200 J to the cold reservoir. Its efficiency is:

  1. 25%
  2. 37.5%
  3. 75%
  4. 80%
Answer

C) 75%

W = QH - QC = 600 J; eta = WQH = 75%. SLO P-11-C-13 · Knowledge

Physics MCQ · More Heat Engines, Second Law and Entropy MCQs · Practise