Question

he measured flow rate of water through a 20 mm diameter pipe is 75 L/min. What is the average velocity (in m/s) of water flowing through the pipe

Answer 1

Average velocity of water flow through the pipe = 3.98 m/s

Step-by-step explanation:

Diameter of pipe = 20 mm

Discharge = 75 L/min

We know that

Discharge = Area x Velocity

`\texttt{Area of pipe}=(\pi d^2)/(4)=(\pi * (20* 10^(-3))^2)/(4)=3.14* 10^(-4)m^2`

Discharge = 75 L/min

`=(75* 10^(-3))/(60)=1.25* 10^(-3)m^3/s`

Substituting

`1.25* 10^(-3)=3.14* 10^(-4)* V\\\\V=3.98m/s`

Average velocity of water flow through the pipe = 3.98 m/s