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Mechanical Engineering QUESTION #2431
Question 1
The Nusselt number \(Nu = hL/k\) physically represents:
  • Temperature gradient at surface divided by overall temperature difference
  • The ratio of convective to conductive heat transfer across the fluid boundary layer✔️
  • The ratio of thermal to momentum boundary layer thickness
  • The ratio of inertial to viscous forces
Correct Answer Explanation
Nusselt number: \(Nu=hL/k\), the ratio of convective heat transfer to conductive heat transfer across the fluid layer.