Why are real engines less efficient than the Carnot limit?

  1. friction, heat losses and other irreversibilities
  2. the first law fails
  3. the Carnot limit is too low
  4. they use more fuel
Answer

A) friction, heat losses and other irreversibilities

Losses. SLO P-11-C-23 · Knowledge

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