The maximum possible efficiency of an engine working between 427 °C and 27 °C is:

  1. 93.7%
  2. 42.9%
  3. 57.1%
  4. 99%
Answer

C) 57.1%

Convert to kelvin: TH = 700 K, TC = 300 K. etamax = 1 - 300700 = 57.1%. SLO P-11-C-23 · Knowledge

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