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Which performance loss occurs in a turbine operating cyclically between fixed reservoir temperatures due to irreversible processes?

A)Lower actual thermodynamic efficiency
B)Increased maximum cycle pressure
C)Decreased total entropy variation
D)Higher isentropic compressor efficiency

💡 Explanation

Lower efficiency results because *entropy generation* in the real turbine increases losses relative to the ideal Carnot cycle; therefore, actual efficiency decreases rather than increases, invalidating options involving pressure/isentropic changes, which imply different failure mechanisms.

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