In fluid flow, cavitation is caused, if the____________________?
Correct answer: D. Flow pressure approaches its vapor pressure at the prevailing temperature
- A. Fluid velocity decreases to zero
- B. Total energy decreases
- C. Both A. and B.
- D. Flow pressure approaches its vapor pressure at the prevailing temperature
Explanation
Cavitation begins when the local absolute pressure falls to or below the liquid vapour pressure at the operating temperature, causing vapour bubbles to form. A mere decrease in total energy or velocity is not the defining condition.
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