Question

Glycerine of density 1.25 × 10³ kg m^-3 is flowing through the conical section of pipe. The area of cross-section of the pipe at its ends is 10 cm² and 5 cm² and pressure drop across its length is 3 Nm^-2. The rate of flow of glycerine through the pipe is x x 10^-5 m³ s^-1. The value of x is____.

Answer 1

Correct answer is 4

By Bernoulli’s eqⁿ

So discharge rate = A₂ v₂

= 5 x 10^-4 x 8 x 10^-2

= 4 x 10^-5 m³/s