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← ScienceWhich consequence results when a heat engine uses working fluid far above its critical point?
A)Isothermal sections become less distinct✓
B)Turbine stress increases exponentially
C)Mechanical efficiency remains unaffected
D)Condenser no longer rejects heat
💡 Explanation
Above the critical point, no distinct liquid-gas phase transition exists; therefore, the *isothermal phase change* during heat rejection blurs because no latent heat dominates, rather than distinct heat transfer alone, due to proximity to that state.
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