Question
Download Solution PDFPitot tube measures ________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Pitot tube:
- It is based on the principle of conversion of kinetic head into pressure head.
- It measures the dynamic pressure of a moving fluid
- The point at which velocity reduces to zero is called the Stagnation point.
- Velocity head is indicated by the difference in liquid level between the pitot tube and the piezometer
- The pitot tube measures the total head therefore known as the total head tube.
Stagnation head = static head + dynamic head
Additional Information
|
Coefficient of velocity (Cv) |
Coefficient of discharge ( Cd) |
|
| Pitot tube | 0.98 - 0.99 | - |
| Venturimeter | 0.97 | 0.97 - 0.99 |
| Orifice meter | 0.98 | 0.63 - 0.65 |
Devices and their uses
| Device | Measurement |
| Venturimeter | Rate of flow ( discharge ) |
| Flow nozzle | Rate of flow |
| Orifice meter | Rate of flow |
| Bend meter | Rate of flow |
| Rotameter | Rate of flow |
| Pitot tube | Velocity |
| Hot wire anemometer | Air and gas velocity |
| Current meter | Velocity in open channels |
Last updated on May 28, 2025
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