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← ScienceWhich outcome occurs when steam turbine cycle efficiency declines?
A)Lower turbine outlet vapor quality✓
B)Increased condenser cooling water flow
C)Higher boiler feedwater temperature achieved
D)Reduced superheater tube metal temperature
💡 Explanation
Lower turbine cycle efficiency leads to a wetter, lower energy exhaust because less thermal energy turns into work via the Rankine cycle's expansion phase. Therefore, turbine outlet vapor quality decreases rather than feedwater/superheater changes affecting inlet steam conditions.
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