Exam-style question
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What is the main factor that limits the efficiency of real engines?.
- A.The type of fuel used
- B.The design of the engine
- C.Heat losses to the environment
- D.The speed of the engine
Model answer
What a good answer should say
- Heat losses to the environment
Explanation
Why this works
The efficiency of real engines is primarily limited by heat losses to the environment, as energy cannot be fully converted into useful work.
Common mistake
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