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Which calculation error appears when fluid viscosity increases, invalidating Bernoulli's equation?

A)Kinetic energy remains underestimated.
B)Pressure measurements become overestimated.
C)Velocity profiles stay miscalculated.
D)Total energy is seen conserved.

💡 Explanation

Increased fluid viscosity means the **viscous dissipation** mechanism introduces significant energy loss not accounted for in Bernoulli's simplified assumptions because kinetic energy is converted into heat, therefore underestimating the kinetic energy, rather than over estimating pressure under streamlined flow conditions.

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