Which of the following changes in pump...

Question 1 / 270705eccef9bbacbc34ba4d454e3

Question 1 of 270705eccef9bbacbc34ba4d454e3

Which of the following changes in pump operating parameters will lead to pump cavitation in a centrifugal pump that is operating in an open system?

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Question 1 of 27070

Which of the following changes in pump operating parameters will lead to pump cavitation in a centrifugal pump that is operating in an open system?

🔍 Key Concepts

• Net Positive Suction Head (NPSH) available vs. NPSH required for a centrifugal pump • Effect of vapor pressure increasing as liquid temperature rises • How suction pressure, speed, and temperature each affect the likelihood of cavitation in an open system

💭 Think About

• In an open system, think about what is fixed at the pump suction and what can actually change as you adjust operating conditions. • Which change would reduce NPSH available at the pump suction and bring the liquid closer to its boiling (vaporization) condition? • For each option, ask: does this move the liquid further from, or closer to, forming vapor bubbles at the impeller eye?

✅ Before You Answer

• Verify how inlet temperature affects liquid vapor pressure and thus NPSH available. • Check whether increasing discharge pressure directly changes the pressure at the pump inlet in an open, vented system. • Consider whether decreasing pump speed tends to increase or decrease the NPSH required by the pump.

Question 1 of 27070

Which of the following changes in pump operating parameters will lead to pump cavitation in a centrifugal pump that is operating in an open system?

Steadily decreasing pump speed

Steadily increasing pump suction pressure

Steadily increasing pump discharge pressure

Steadily increasing pump inlet temperature

Question 1 / 270705eccef9bbacbc34ba4d454e3

Question 1 of 270705eccef9bbacbc34ba4d454e3

Which of the following changes in pump operating parameters will lead to pump cavitation in a centrifugal pump that is operating in an open system?

Back

Question 1 of 27070

Which of the following changes in pump operating parameters will lead to pump cavitation in a centrifugal pump that is operating in an open system?