The simplest method to use for determining...

🔍 Key Concepts

• Centrifugal pump performance – how do you tell if it’s running where it should on its curve? • Electrical load vs. hydraulic load – what happens to motor current as a pump’s flow and head change? • Safe vs. unsafe valve operations – which actions can damage the pump (cavitation, overheating, seal failure)?

💭 Think About

• Think about which option gives you a quick, repeatable quantitative indication that can be compared to earlier ‘known good’ operation. • Which methods listed could actually harm a centrifugal pump or its seals if done improperly? • Which choice can tell you if the pump is working as designed without depending on temperature rise or pressure transients that may be slow or misleading?

✅ Before You Answer

• Identify which actions (closing suction or discharge valves) are generally warned against in pump operation manuals and why. • Consider what measurement can be easily logged over time and compared to past records of a properly operating pump. • Ask whether monitoring temperature alone will quickly and reliably show if the pump is operating on its correct performance curve.

The simplest method to use for determining if a centrifugal pump is operating as designed, is to ________.

close off the discharge valve, and watch for a rise in pressure

momentarily close off the suction valve, and watch for a rise in pressure

use a clamp-on ammeter and compare the readings to past records

closely observe the pump discharge temperature

🔍 Key Concepts

💭 Think About

✅ Before You Answer