ABC Wastewater Collection Class II Practice Questions - ABC Wastewater Collection Operator Class II Certification Exam

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According to the affinity laws, if a variable-frequency drive reduces a lift station pump from 60 Hz to 45 Hz, the pump's flow will change by approximately what factor?

Multiplied by 0.56 Multiplied by 0.75 Multiplied by 0.42 Multiplied by 0.88

Correct Answer:

Multiplied by 0.75

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