High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ? | MCQ Hive

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Q High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

A A. Δ h = 0 and δs = 0
B B. Δ h ≠ 0 and δs = 0
C C. Δ h ≠ 0 and δs ≠ 0
D D. Δ h = 0 and δs ≠ 0

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