A horizontal pipe has a constriction. For water flowing from a wide pipe to the constricted pipe, the flow rate (decreases)

Question

State if the statement is TRUE or FALSE based on the word in the parentheses, and give the right answer.

Answer 1

TRUE, the flow rate decreases. This is because of the principle of continuity, which states that the mass flow rate (which is equal to the volume flow rate for incompressible fluids like water) must remain constant for an incompressible fluid flowing through a horizontal pipe. As the area of the pipe decreases at the constriction, the velocity of the water must increase to maintain this constant mass flow rate. This increase in velocity results in a decrease in the volume flow rate, or flow rate per unit time.