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Which outcome reduces the pressure differential in a Carnot heat engine?

A)Isothermal gas expansion phase completion
B)Increased adiabatic compression work
C)Decreased thermal reservoir temperature
D)Reduced heat rejection to sink

💡 Explanation

Reduced pressure differential results from isothermal expansion because isothermal steps maintaining a constant temperature allow the gas to expand with less pressure change, therefore equilibrium reduces the sudden spikes, rather than changing the compression or reservoir properties.

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