Working Principle Of Multimeter Pdf

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Are you looking for the Venturi Meter? So today we will study the Definition, Parts, Working Principle, Diagram, Experiment, Derivation, Formula, Application, Advantages, Disadvantages, PDF. Here you will get the articles of Mechanical Engineering in brief with some key points and you will get to know an enormous amount of knowledge from It. So If you find this articles helpful, please let us know in the comment box, either if any correction required too, also let us know in the comment box. Venturi Meter:Venturi Meter is a device or component which is used for measuring the rate of flow of liquid through pipes.The rate of Fluid = Discharge.Venture Meter is first developed by G.B. Venturi in 1797.It works on the basic principle of Bernoulli’s Equation.Bernoulli’s Equation: In Simple, this is defined as the sum of Pressure energy, Kinetic energy per unit volume and Potential energy per unit volume equal in the same direction. Venturi Meter Definition:Venturi Meter is a device in which pressure energy is converted into kinetic energy and It used for measuring the flow rate (Discharge) of the system. Venturi Meter Parts:It consists of 3 parts:.

Converging cone or Diameter (the area is Decreasing). Throat Diameter (the area is constant). Diverging cone (the area is increasing)let’s consider a pipe in which there is venturi meter is fixed.

In the pipe fluid is flowing so first it enters into a converging cone then Thorat and then Diverging Cone. Converging cone:When water flowing through this cone the area is decreasing, therefore, the speed of flowing water increases and pressure decreases. Throat Diameter:When water flowing through this cone the area remains constant therefore the speed of flowing water and pressure remains constant. Diverging cone:When water flowing through this cone the area is increasing, therefore, the speed of flowing water decreases and pressure decreases. Venturi Meter Working Principle / Diagram:Venturi Meter works on the basic principle of Bernoulli’s Equation. Venturi Meter Derivation / Formula:The derivation has been solved on paper because their several rotations cannot be typed here. In the figure, the water flowing in the pipe (flow in) comes with section 1 and flow out goes with section 3.The several rotations are:.

Digital Multimeter Block Diagram Ppt

A1 = Inlet area in m 2. D 1 = Diameter of Inlet. D 2 = Diameter of the throat. A2 = Throat area in m 2. P1 = Pressure at the inlet in N/m 2. P2 = Pressure at the throat in N/m 2.

Basic Principle Of Multimeter

V1 = Velocity at inlet in m/sec. V2 = Velocity at throat in m/sec. h = Pressure heads. C d = Coefficient of Discharge. This is unitless. Q act= Actual discharge in m 3/sec.

Working Principle Of Multimeter Pdf Download

Q the= Theoretical discharge in m 3/sec.The other way to find h (Pressure heads) by using differential U–Tube Manometer:The liquid in the manometer is heavier than the flowing fluid in the pipe. S h =Specific gravity of the heavier liquid. x = Difference of the heavier liquid column in U-tube. S 0 =The Specific gravity of flowing fluid. S l =Specific gravity of the lighter liquid.h = x (S h / S 0) – 1The liquid in the manometer is lighter than the flowing fluid in the pipe. H = x 1- (S l / S 0) Preparing for Competitive Exam?