The maximum possible efficiency of an engine working between 227 °C and 27 °C is:

  1. 60%
  2. 80%
  3. 40%
  4. 88.1%
Answer

C) 40%

Convert to kelvin: TH = 500 K, TC = 300 K. etamax = 1 - 300500 = 40%. SLO P-11-C-23 · Knowledge

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