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Which effect emerges when the condenser temperature diminishes toward ambient in a steam turbine?

A)Decreased thermal efficiency overall yield
B)Increased condenser vacuum back-pressure formed
C)Elevated turbine blade speed performance
D)Enhanced superheated steam inlet capacity

💡 Explanation

Decreasing condenser implies reduced temperature difference thus lowers thermal efficiency because the Rankine cycle efficiency depends directly on the temperature differences; therefore efficiency drops, rather than a back-pressure increase, which is usually caused by flow blockage.

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