PE Mechanical Thermal Fluids Practice Questions - PE Mechanical Thermal And Fluids Systems Exam

Which statement is the correct form of the first law of thermodynamics applied to a closed system undergoing a process?

Q + W = ΔU, where W is work done on the system Q − W = ΔU, where W is work done by the system Q + W = ΔH, where W is work done by the system Q − W = ΔH, where W is work done on the system

Correct Answer:

Q − W = ΔU, where W is work done by the system

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