Which risk significantly increases when exceeding a pump's NPSHr?

💡 Explanation

Vapor bubbles collapse violently during cavitation erosion, because pressure recovery amplifies localized implosions. This exceeds the material's fatigue limit. Consequently, pitting occurs within the impeller, rather than other failure modes caused by imbalance or electrical overheating.

• Which outcome occurs when a Stirling engine's regenerator matrix undergoes sublimation?
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• Which mechanism enables current flow under high magnetic fields?