Thermodynamics quizzes
How heat becomes useful work, why engines always waste some energy, and what limits their efficiency.
2 quizzes
74 questions
Quizzes in this topic
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Thermodynamics: Thermodynamic systems, properties and states · Systems, Properties and Equilibrium
How engineers draw a system's boundary, classify its properties and decide when its state is well defined.
24 questions -
Thermodynamics: Why No Engine Can Waste Nothing
A tour of energy, heat and entropy, from pressure cookers and jet engines to heat pumps and sweating glasses.
50 questions
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From Thermodynamics: Thermodynamic systems, properties and states · Systems, Properties and Equilibrium
A sealed pressure cooker heated on a stove, before its valve releases any steam, is...
- An open system
- An isolated system
- A closed system
Show the answer
Answer: A closed system
No mass leaves while the valve stays shut, yet heat flows in from the burner, which is the definition of a closed system.
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