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1. |
High pressure steam is expanded adiabati-cally 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. | Δ H = 0 and ΔS = 0. |
B. | Δ H ≠ 0 and ΔS = 0. |
C. | Δ H ≠ 0 and ΔS ≠ 0. |
D. | Δ H = 0 and ΔS ≠ 0. |
Answer» C. Œî H ‚↠0 and ŒîS ‚↠0. | |