A heat engine takes in 1000 J from the hot reservoir and rejects 600 J to the cold reservoir. Its efficiency is:

  1. 60%
  2. 62.5%
  3. 40%
  4. 20%
Answer

C) 40%

W = QH - QC = 400 J; eta = WQH = 40%. SLO P-11-C-13 · Knowledge

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