________________ decreases during adiabatic throttling of a perfect gas?
Correct answer: A. Pressure
- A. Pressure
- B. Temperature
- C. Enthalpy
- D. Entropy
Explanation
A throttling valve is adiabatic and does no shaft work, so enthalpy remains constant; for a perfect gas, this also means temperature remains constant. The pressure, however, falls across the valve.
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