engineering recuitment UPPSC AE Mock Test 2024 Heat Transfer Convection Dimensionless Numbers

Heat is lost from a 100 mm diameter steam pipe placed horizontally in ambient at 30°C. If the Nusselt number is 25 and thermal conductivity of air is 0.03 W/mK, then the heat transfer coefficient will be

1

7.5 W/m²K

2

16.2 W/m²K

3

25.2 W/m²K

4

30 W/m²K

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