Reduced capacity, accompanied by vibration...

🔍 Key Concepts

• Centrifugal pump suction conditions and what happens when pressure at the eye of the impeller gets too low • The basic meaning of cavitation, and what kinds of sounds and vibrations it creates • The difference between problems that occur in liquid systems versus problems usually associated with steam or compressible fluids

💭 Think About

• Which of these phenomena is specifically linked to low pressure areas in a pump, where bubbles form and collapse near the impeller? • Which option is more likely to cause hammering or banging in long pipelines or steam lines, rather than mainly at the pump suction? • Think about what type of flow (liquid vs. steam) a centrifugal pump normally handles. Which options are less likely just from that fact alone?

✅ Before You Answer

• Confirm which phenomenon is characterized by formation and violent collapse of vapor bubbles in a liquid near the pump suction • Eliminate any choices that are mainly associated with steam systems or rapid valve closures in pipelines, not with normal liquid pump operation • Check which option is most commonly cited in textbooks as the main cause of reduced capacity plus vibration and noise at a centrifugal pump suction

Reduced capacity, accompanied by vibration and noise at the suction of a centrifugal pump is a result of __________.

cavitation

water hammer

fluid friction

steam knock

🔍 Key Concepts

💭 Think About

✅ Before You Answer