Fluid Mechanics Lab: Calibration of Orifice Meter

Play an AI-generated podcast conversation about this lesson

What is one of the steps involved in calibrating an orifice meter?

Measuring the length of the U-tube manometer
Adjusting the control valve in the pipeline to get the required discharge (correct)
Obtaining at least three readings
Using a laser to determine the flow rate

What is the purpose of plotting the graph log Qa Vs log Hm in orifice meter calibration?

To measure the diameter of the orifice
To determine the value of constant 'K' (correct)
To create a calibration chart for the orifice meter
To calculate the pressure difference using Bernoulli's equation

How many times should you repeat the process while calibrating an orifice meter?

Twice to minimize errors
Ten times is too many
At least five times (correct)
Only once for accuracy

What does the coefficient of discharge (Cd) represent in an orifice meter calibration?

The ratio of actual discharge to theoretical discharge (D) Signup and view all the answers

Which type of flow measurement device is often compared with an orifice meter?

Venturimeter (D) Signup and view all the answers

What information can be obtained from a calibration chart for an orifice meter?

Discharge corresponding to any manometric head (C) Signup and view all the answers

What is the aim of calibrating the Orifice meter?

Determine the coefficient of discharge for different flow rates (C) Signup and view all the answers

How is the theoretical discharge through an Orifice meter calculated?

$Q_{th} = a_1a_0 \sqrt{2gh}$ (D) Signup and view all the answers

How does the cross-sectional area of the pipe at the inlet compare with the area of the Orifice?

The area of the pipe is greater than the area of the Orifice (A) Signup and view all the answers

Which graph is NOT drawn during the calibration of the Orifice meter?

$Cd$ Vs $Q_a$ (D) Signup and view all the answers

What is used to measure the pressure head difference in an Orifice meter?

U-Tube manometer (D) Signup and view all the answers

In terms of fluid flow, what does 'Hm' represent in the formula for theoretical discharge?

Pressure head difference (B) Signup and view all the answers

What is the purpose of using an Orificemeter?

To measure the pressure difference between two sections (A) Signup and view all the answers

How is the Coefficient of Discharge (Cd) calculated for an Orificemeter?

Cd = Qa / Qth (D) Signup and view all the answers

Which principle does the Orificemeter work on?

Bernoulli's Principle (B) Signup and view all the answers

How does an Orificemeter compare to a Venturimeter?

An Orificemeter measures pressure while a Venturimeter measures velocity (D) Signup and view all the answers

What is the main function of an Orifice plate in an Orificemeter?

To create a pressure difference for measurement (D) Signup and view all the answers

How does an Orificemeter determine the discharge in a pipe?

By reducing the flow passage area to create pressure difference (A) Signup and view all the answers