Question:
In order to avoid cavitation in centrifugal pumps
In order to avoid cavitation in centrifugal pumps
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Cavitation can be prevented by:
• Increasing suction pressure.
• Reducing suction lift.
• Increasing NPSH available.
• Keeping the suction pipe short and straight.
• Increasing suction pressure.
• Reducing suction lift.
• Increasing NPSH available.
• Keeping the suction pipe short and straight.
Updated On: Jul 23, 2026
- The suction pressure should be high
- The delivery pressure should be high
- The suction pressure should be low
- The delivery pressure should be low
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The Correct Option is A
Solution and Explanation
Concept:
Cavitation occurs when the pressure in a flowing liquid falls below its vapour pressure, causing the formation of vapour bubbles.
To avoid cavitation, the pressure at the pump inlet (suction side) must always remain greater than the vapour pressure of the liquid.
This condition is ensured by maintaining sufficient Net Positive Suction Head (NPSH).
Step 1: Understand cavitation. If \[ P_{\text{suction}}Step 2: {\color{red}Determine the preventive measure.} To prevent cavitation, \[ P_{\text{suction}}>P_{\text{vapour}}. \] Thus, \[ \boxed{\text{The suction pressure should be high}.} \] Therefore, the correct option is \[ \boxed{(A)\;\text{The suction pressure should be high}.} \]
Step 1: Understand cavitation. If \[ P_{\text{suction}}Step 2: {\color{red}Determine the preventive measure.} To prevent cavitation, \[ P_{\text{suction}}>P_{\text{vapour}}. \] Thus, \[ \boxed{\text{The suction pressure should be high}.} \] Therefore, the correct option is \[ \boxed{(A)\;\text{The suction pressure should be high}.} \]
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