Venturi Meter

Venturi Meter

It is an instrument used to measure the discharge of liquid flowing in pipe. It consists of three parts, the converging cone, the throat and the diverging cone. The length of the divergent cone is made about three to four times long than that of the divergent cone in order to avoid tendency of breaking away the stream of liquid and to minimise friction losses.

  1. The velocity of liquid at the throat is higher than that of inlet.
  2. The pressure of liquid at the throat is lower than that of inlet.
  3. The velocity and pressure of liquid flowing through the divergent portion decreases.

Questions and Answers

  1. venturi meter is used to
    Answer : Measure the discharge of liquid flowing in a pipe
  2. The divergent portion of a venturi meter is made longer than convergent portion in order to
    Answer : To minimize the frictional losses and avoid the tendency of breaking away the stream of liquid