🔍 Key Concepts

• Cavitation in centrifugal pumps and what physically happens to the liquid at low pressure areas • Where the lowest pressure exists in a centrifugal pump (suction eye of the impeller) • Difference between vapor formation/collapse and other phenomena like water hammer or flow type

💭 Think About

• Think about what happens to a liquid if the local pressure drops below its vapor pressure inside the pump. • Ask yourself: which choice describes something that could cause noise, vibration, and damage to the impeller surfaces over time? • Which options describe flow conditions or mechanical conditions that are NOT specifically linked to the word cavitation?

✅ Before You Answer

• Identify which option mentions vapor pockets or bubbles forming and then collapsing. • Eliminate any option that only describes smooth (laminar) flow, since cavitation is a destructive, turbulent phenomenon. • Check that the option you pick occurs inside the pump/impeller, not just in the suction line or clearances.