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The cavitation and pitting can be prevented by creating which one of the following conditions ?
- a)Reducing the pressure head
- b)Reducing the velocity head
- c)Increasing the elevation head
- d)Reducing the piezometric head
Correct answer is option 'B'. Can you explain this answer?
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The cavitation and pitting can be prevented by creating which one of t...
Reducing the velocity head:
Reducing the velocity head is the key factor in preventing cavitation and pitting in hydraulic systems. Cavitation occurs when the velocity of the fluid is high enough to create low pressure zones, causing vapor bubbles to form and collapse. These collapsing bubbles lead to pitting and erosion of the material surface. By reducing the velocity head, the pressure fluctuations are minimized, thereby reducing the likelihood of cavitation and pitting.
How to reduce velocity head:
- Use larger diameter pipes: Increasing the diameter of the pipes can reduce the velocity of the fluid, thereby decreasing the chances of cavitation.
- Restricting flow: Installing flow restrictors or control valves can help in controlling the flow rate and reducing the velocity head.
- Reducing pump speed: Lowering the speed of the pump can also decrease the velocity head and prevent cavitation.
By implementing these measures to reduce the velocity head in the hydraulic system, cavitation and pitting can be effectively prevented, ensuring the longevity and efficiency of the system.
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The cavitation and pitting can be prevented by creating which one of the following conditions ?a)Reducing the pressure headb)Reducing the velocity headc)Increasing the elevation headd)Reducing the piezometric headCorrect answer is option 'B'. Can you explain this answer?
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