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Which outcome occurs when the condenser pressure increases within a Rankine cycle?

A)Reduced turbine blade corrosion rate
B)Decreased system mechanical resonance
C)Lower overall cycle thermal efficiency
D)Increased risk of cavitation damage

💡 Explanation

Cycle efficiency decreases following a pressure increase because less energy is extracted during condensation. Raising the condenser pressure increases the cycle's low temperature, reducing the temperature difference available for conversion, therefore decreasing overall Rankine efficiency rather than maintaining it.

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