At the narrowest section (throat) of a horizontal Venturi-meter, an ideal fluid in steady flow experiences:

Step-by-step solution

According to the equation of continuity for an incompressible fluid in steady flow, A₁ v₁ = A₂ v₂ . At the narrowest section (throat) of the Venturi-meter, the cross-sectional area A is minimum. Therefore, the velocity v of the fluid is maximum. According to Bernoulli's principle for a horizontal flow, P + 1 2 v^2 = constant . Since the velocity v is maximum at the throat, the pressure P must be minimum to maintain the constant sum. Thus, the fluid experiences maximum velocity and minimum pressure at the throat. An