[amp_mcq option1=”the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid” option2=”pressure becomes more than critical pressure” option3=”flow is increased” option4=”pressure is increased” correct=”option3″]
Cavitation is the formation and collapse of vapor bubbles in a liquid. It occurs when the pressure of the liquid drops below the vapor pressure of the liquid. This can happen when a liquid flows through a narrow passage, such as a valve or pump impeller. The pressure drop causes the liquid to vaporize, and the vapor bubbles collapse when the pressure increases. Cavitation can cause a number of problems, including erosion, noise, and vibration.
The correct answer is A. the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid.
Option B is incorrect because the pressure must drop below the vapor pressure of the liquid for cavitation to occur.
Option C is incorrect because flow does not cause cavitation. In fact, flow can help to prevent cavitation by increasing the pressure in the liquid.
Option D is incorrect because pressure increase can help to prevent cavitation.