Question 1
A Class II operator must select a lift station pump for a wet well that receives gritty, stringy raw sewage with a peak design flow of 350 gpm at 35 ft TDH. Which pump type is the best primary choice?
Correct Answer:
Submersible non-clog centrifugal pump
Question 2
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?
Correct Answer:
Multiplied by 0.75
Question 3
The operating point of a centrifugal lift station pump is best defined as:
Correct Answer:
The intersection of the pump curve and the system head curve
Question 4
A duplex submersible lift station uses lead/lag control. What is the main reason operators alternate the lead pump on each cycle?
Correct Answer:
It distributes wear evenly between the two pumps
Question 5
A Ten States Standards-compliant lift station limits pump starts to approximately how many per hour for constant-speed motors above 7.5 hp?
Correct Answer:
6 starts per hour
Question 1
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About this Exam

Prepare with the ABC Wastewater Collection Class II Practice Questions - ABC Wastewater Collection Operator Class II Certification Exam practice quiz. This question bank includes 100 questions covering pump, lift, station, operator, and sewer. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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

This practice set contains 100 questions from the matching question bank and focuses on pump, lift, station, operator, and sewer. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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