The maximum possible efficiency of an engine working between 127 °C and 27 °C is:

  1. 25%
  2. 78.7%
  3. 75%
  4. 50%
Answer

A) 25%

Convert to kelvin: TH = 400 K, TC = 300 K. etamax = 1 - 300400 = 25%. SLO P-11-C-23 · Knowledge

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