What would probably occur if excessive...

🔍 Key Concepts

• Centrifugal pump mechanics – how the impeller, shaft, and bearings are driven • Mechanical misalignment effects – what happens to rotating shafts and bearings when they are not in line • Difference between hydraulic problems (cavitation/flashing) and mechanical problems (bearings, seals, couplings)

💭 Think About

• Ask yourself: does misalignment mainly affect the liquid flow inside the pump, or the rotating mechanical parts that support the shaft? • Which of the options deals with internal pressure/temperature of the liquid, and which deals with stresses and friction in the rotating assembly? • Think about what happens to bearings and couplings if a shaft is pulled out of straight alignment and forced to turn at high speed.

✅ Before You Answer

• Separate the choices into hydraulic phenomena (related to pressure, vaporization, flow) vs mechanical wear/heat (related to friction and load on components). • Verify which problems are normally caused by net positive suction head (NPSH) and suction conditions, and which are caused by poor shaft alignment. • Ask: if you ran a misaligned shaft for a long period at speed, which component from the list would most likely suffer from excessive friction and heat buildup?

What would probably occur if excessive misalignment existed between a centrifugal pump and its power source?

pump cavitation will increase

power consumption will be reduced

flashing may occur at the impeller eye

shaft bearings will overheat

🔍 Key Concepts

💭 Think About

✅ Before You Answer