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Which error overwhelms pitot tube velocity calculations when increased?

A)Non-constant fluid density develops
B)Viscous stress becomes relevant
C)Compressibility effects reduce
D)Thermal expansion becomes excessive

💡 Explanation

Increased fluid velocity causes turbulence; therefore viscous forces dominate, invalidating the Bernoulli equation's ideal fluid assumptions, because the inviscid approximations no longer hold. This answer is correct; a turbulent regime must incorporate Reynolds stress rather than negligibly-small estimations.

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