1256. Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re0.8 . Prn, is not valid, if the value of September 7, 2025 by Admin N = 0.4 is used for heating N = 0.3 is used for cooling Reynolds number for the flow involved is > 10000 Reynolds number for the flow involved is < 2100 ✅ The correct answer is option D.
