Question

The cross sectional area of a horizontal tube increases along its length linearly as moved in the direction of flow. The variation of pressure, as we move along its length in the direction of flow(x-direction), can be best represented by the following graph –

• A. (a)
• A. (b)
• A. (c)
• A. (d)

Answer 1

(a)

As Av = k₁(constant)

also P + $\frac{1}{2}$rv² + rgh = k₂ (constant)

\ P = k₂ –$\frac{1}{2}$ r$\frac{k_{1}^{2}}{A^{2}}$