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← ScienceWhich behavior changes occurs in two cascaded Carnot heat engines when the intermediate temperature increases?
A)Work output shifts to first engine✓
B)Total efficiency reaches Carnot limit
C)Combined heat exhausted approaches zero
D)Entropy change minimizes in both engines
💡 Explanation
When intermediate temperature increases, the temperature difference across the first Carnot engine decreases, reducing its work output and increasing the work produced by the second engine; heat transfer happens because of temperature differential. Therefore work shifts, rather than the incorrect results without temperature relations.
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