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← TechnologyWhich risk increases when a progressive cavity pump stator swells excessively in a chemical injection system?
A)Drive motor overloading due to friction✓
B)Injection rate fluctuations because of cavitation
C)Valve failure from increased backpressure
D)Seal rupture caused by increased axial load
💡 Explanation
When a progressive cavity pump stator swells, increased friction occurs due to tighter rotor contact, raising the torque requirements. Therefore drive motor overloading becomes a risk, rather than cavitation, valve or seal failures that would stem from distinct fluid dynamic or structural stresses.
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