Question 8: A liquid passed through a pipe and it was found that the rate of influx is equal to the rate of efflux. What information do you get about the liquid?
If the rate of influx is equal to the rate of efflux, this means the volume of fluid flowing in per second is equal to the volume of fluid flowing out in one second. Thus the fluid flow satisfies the equation of continuity.
Where A1 is the cross-sectional area of the pipe at the entrance and A2 is its cross-sectional area at the exit.
v1 is the velocity of the liquid at A1 and v2 is its velocity at A2.
Information about the liquid
If the equation of continuity holds, then it indicates that the fluid has a steady flow and that the fluid is incompressible and non-viscous.