A heat engine takes in 2400 J from the hot reservoir and rejects 1800 J to the cold reservoir. Its efficiency is:

  1. 25%
  2. 12.5%
  3. 75%
  4. 57.1%
Answer

A) 25%

W = QH - QC = 600 J; eta = WQH = 25%. SLO P-11-C-13 · Knowledge

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