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← ScienceWhich consequence occurs during isentropic expansion within a Carnot engine?
A)System temperature decreases reversibly✓
B)Entropy remains constant irreversibly
C)Heat flows into the system
D)System pressure increases isothermally
💡 Explanation
During isentropic expansion, the system is thermally isolated. Heat transfer doesn't occur, and the expansion causes a decrease in temperature because the system does work; this is adiabatic expansion and therefore, the system temperature decreases rather than increases or remains constant.
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