The Carnot engine is important because:

  1. it is used in all cars
  2. it has 100% efficiency
  3. it needs no cold reservoir
  4. no engine working between the same two temperatures can be more efficient
Answer

D) no engine working between the same two temperatures can be more efficient

Carnot's theorem. SLO P-11-C-16 · Understanding

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