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Which outcome results when laminar flow transitions beyond a critical Reynolds number?

A)Increased convective heat transfer occurs
B)Increased skin friction drag develops
C)Pressure drop across a pipe decreases
D)Efficiency of mixing drops extremely

💡 Explanation

Turbulent flow is characterized by chaotic changes in pressure and velocity because momentum diffusion increases sharply due to eddy formation known as turbulence transition; therefore increased friction drag occurs, rather than decreased, because laminar flow converts to turbulent flow.

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