Cavitation can be prevented by________________?
Correct answer: B. Maintaining the suction head sufficiently greater than the vapour pressure
- A. Suitably designing the pump
- B. Maintaining the suction head sufficiently greater than the vapour pressure
- C. Maintaining suction head = developed head
- D. Maintaining suction head lower than the vapour pressure
Explanation
Cavitation is avoided by ensuring the pressure head at the pump suction remains sufficiently above the liquid vapour-pressure head, usually expressed as adequate available NPSH. A suction head below vapour pressure promotes vapour-bubble formation rather than preventing it.
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