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Question
Consider the following statements:
In order to have cavitation,
1. local velocity is increased so that the local pressure is decreased below vapour pressure
2. elevation is kept so high that the local pressure reduces below vapour pressure
3. general ambient pressure is increased to a very high magnitude
4. water hammer must occur in the system Which of these statements are correct?
Consider the following statements:
In order to have cavitation,
1. local velocity is increased so that the local pressure is decreased below vapour pressure
2. elevation is kept so high that the local pressure reduces below vapour pressure
3. general ambient pressure is increased to a very high magnitude
4. water hammer must occur in the system Which of these statements are correct?
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Solution
The correct option is C 1 and 2
Cavitation is the formation of liquid free zones such as vapour bubbles or voids in a flowing liquid where pressure falls below vapour pressure. When subjected to high pressure, the bubbles collapse. Increase in local velocity or high elevation can cause local pressure to reduce below vapour pressure and cause cavitation.
Cavitation is the formation of liquid free zones such as vapour bubbles or voids in a flowing liquid where pressure falls below vapour pressure. When subjected to high pressure, the bubbles collapse. Increase in local velocity or high elevation can cause local pressure to reduce below vapour pressure and cause cavitation.
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