Heat is loss from a 100 mm diameter steam pipe placed horizontally in ambient air at 30 degree Celsius. If the Nusselt number is 25 W/m2 K and thermal conductivity of the air is 0.03 W/m K, then heat transfer coefficient will be

Heat is loss from a 100 mm diameter steam pipe placed horizontally in

1.	Heat is loss from a 100 mm diameter steam pipe placed horizontally in ambient air at 30 degree Celsius. If the Nusselt number is 25 W/m2 K and thermal conductivity of the air is 0.03 W/m K, then heat transfer coefficient will be
A.	7.5 W/m<sup>2</sup> K
B.	16.5 W/m<sup>2</sup> K
C.	25 W/m<sup>2</sup> K
D.	30 W/m<sup>2</sup> K
Answer» B. 16.5 W/m<sup>2</sup> K