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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. | ≈í√Æ H ‚Äö√¢‚Ä 0 and ≈í√ÆS = 0 |
C. | ≈í√Æ H ‚Äö√¢‚Ä 0 and ≈í√ÆS ‚Äö√¢‚Ä 0 |
D. | ≈í√Æ H = 0 and ≈í√ÆS ‚Äö√¢‚Ä 0 |
Answer» C. ≈í√Æ H ‚Äö√¢‚Ä 0 and ≈í√ÆS ‚Äö√¢‚Ä 0 | |