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← TechnologyWhich outcome occurs when tight stack-up tolerances are not maintained in the assembly of a multi-stage centrifugal pump?
A)Reduced net positive suction head
B)Increased impeller cavitation likelihood
C)Elevated bearing temperature and wear✓
D)Decreased hydraulic efficiency overall
💡 Explanation
Elevated bearing temperatures and increased wear occur because misalignment resulting from tolerance stack-up stresses the bearings, rather than distributing load evenly. Therefore, bearing failure becomes more likely, rather than improved pumping performance during operation.
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