Question

A Venturi meter is used to measure which physical quantity?

Answer 1

A Venturi meter is a device which works on Bernoulli's principle and is related to the study of liquids.Bernoulli's principle states that as the speed of a moving fluid increases (liquid or gas), the pressure within the fluid decreases.

Complete answer:
A Venturi Meter works on Bernoulli's principle which expresses that the distinction in pressure made over the obstacle gives the proportion of the liquid stream rate. The stream rate is relative to the square of the differential of the pressure. A venturi meter is made of a straight channel area, a tube-shaped throat, a uniting cone shaped gulf segment and a veering clone-like outlet segment.

The throat area is of a small cross segment which gives strengthening to the liquid. The contraction affects the stream velocity to increase and pressure of liquid to drop. The tap of high pressure is taken at the delta area and the tap of low pressure is located at the center of the throat.

The difference in pressure between delta and throat is called the proportion of stream rate.The Venturi impact is the drop in liquid pressure that tends to occur when a liquid moves through the tightened area of any channel. A Venturi Meter is mainly used to estimate the rate of flow of liquid through a pipe by decreasing the cross-sectional area and creating a gradient of pressure.

Hence, a Venturi meter is used to measure the rate of flow of fluid flowing through a pipe.

Note: In liquid, an incompressible liquid's velocity must increase when it goes by a tightening according to the guideline of mass coherence, when its static pressure must decrease according to the standard of conservation of mechanical energy (Bernoulli's Principle). Along these lines, any addition in kinetic energy a liquid may get by its expanded velocity through a choking is adjusted by a collapse in pressure. Estimating the pressure, the stream rate can be bent on.