Question

Which of the following instruments is used to measure flow on the application of Bernoulli's theorem
1. Venturimeter
2. Orifice plate
3. Nozzle
4. Pitot tube

Answer 1

Correct Answer - Option 1 : Venturimeter

Explanation

• The flow rate through a pipe is usually measured by providing a coaxial area contraction within the pipe and by recording the pressure drop across the contraction, which is the application of Bernoulli’s equation.
• Bernoulli's principle can be derived from the principle of conservation of energy.
• Bernoulli's theorem states that, in a steady flow, the sum of all forms of energy in a fluid along a streamline is the same at all points on that streamline
• Bernoulli equation represented in head form (the total energy per unit weight):

   \(\frac{P}{\rho g} + \frac{{{v^2}}}{{2g}} + Z = \rm Constant\)

• Venturimeter is used to measure flow on the application of Bernoulli's theorem.