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← ScienceWhich outcome arises as jet engine oil cools?
A)Increased viscous boundary layer thickness✓
B)Decreased impeller cavitation susceptibility
C)Elevated thermal expansion coefficient
D)Augmented adiabatic compression efficiency
💡 Explanation
As lubricating oil cools within a jet engine, its dynamic viscosity increases, because its molecules overcome thermal energy, favoring intermolecular cohesion; therefore, viscous boundary layer thickness increases, rather than options linked to temperature gradients in thermodynamic conditions or fluid vaporization properties.
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