Pitot tube is one of the most accurate devices for
- Apressure measurement
- Bvelocity measurementCorrect
- Cdensity measurement
- Dsurface tension measurement
Solution
Concept
Use of Pitot tube
Formula
v = Cv √(2 g h)
Step-by-step solution
1. A Pitot tube measures the stagnation pressure, from which the local velocity of flow is calculated.
Explanation
The Pitot tube is used to measure the velocity of flow at a point in a pipe or an open channel.
Why the other options are wrong
It does not measure density or surface tension, and it is not a pressure gauge for general pressure measurement.
Shortcut
Pitot = velocity.
Common mistake
Choosing pressure measurement.
Correct answer: B) velocity measurement