Which risk increases when a pump impeller spins beyond rated speed?

💡 Explanation

Increased impeller speed causes reduced static pressure locally, encouraging vapour bubble formation via cavitation; therefore, pitting increases because collapsing bubbles damage materials rather than promoting stable laminar flow, as viscosity is nearly constant.

• Which risk increases rapidly when crystal lattice dislocations impede crack propagation?
• Which outcome occurs when a non-polar solvent enters a molecular crystal?
• Which outcome results when exceeding a supercritical fluid engine heat exchanger's pressure limit?
• Which outcome is triggered when fluid flow induces hydraulic resonance?
• Which risk increases sharply when neutron moderators are lost in a nuclear reactor core during fission?
• Which mechanism leads to reduced efficiency when rapid cooling induces crystal lattice defects in thermoelectric generators?