Question

Water of density 1000 kg/m³ is pumped at a volumetric flow rate of $3.14 \times 10^{-2}$ m³/s through a pipe of inner diameter 10 cm and length 100 m, from a large Reservoir 1 to another large Reservoir 2 at a height of 50 m above Reservoir 1, as shown in the figure. The flow in the pipe is in the turbulent regime with a Darcy friction factor $f = 0.06$ and a kinetic energy correction factor $\alpha = 1$. Take $g = 9.8$ m/s². If all minor losses are negligible and the pump efficiency is 100%, the pump power, in kW, rounded off to 2 decimal places, is _____.

Answer 1

The correct Answers is :30.40 or 30.50 Approx