Basic Wastewater Operations – Chapter 5 (The Collection System) – Exam with Questions and Answers

Basic Wastewater Operations – Chapter 5 (The Collection System) – Exam with
Questions and Answers

_____________ pumps in dry wells collect packing seal leakage as well as cleanup water.

A. Slump

B. Dump

C. Bump

D. Sump - ✔✔✔-D. Sump



______________ are important to lift station operation and maintenance.

A. Bypasses

B. Records

C. Siphons

D. Bacteria - ✔✔✔-B. Records



A ______________ maintenance program keeps emergency repairs to a minimum.

A. Predetermined

B. Premeditated

C. Preventive

D. Prefabricated - ✔✔✔-C. Preventive



A ladder must be within ___________ feet of anyone in the trench.

A. 25

B. 24

C. 23

D. 22 - ✔✔✔-A. 25



Common methods to detect liquid depths and control pumps are ____________, pneumatic
bubblers, electric probes, and ultrasonic sensors.

, Basic Wastewater Operations – Chapter 5 (The Collection System) – Exam with
Questions and Answers

A. Weirs

B. Floats

C. Meters

D. Flumes - ✔✔✔-B. Floats



Discharge valves on a positive displacement pump must be ___________.

A. Packed

B. Leaking

C. Closed

D. Open - ✔✔✔-D. Open



Dry well stations have the ___________ and pumps in a dry well separated from the adjacent
wet well.

A. Wastewater

B. Floats

C. Motors

D. Vents - ✔✔✔-C. Motors



Excavation spoil must be at least ________ feet from the edge of the trench.

A. 5

B. 4

C. 3

D. 2 - ✔✔✔-D.2



Foreign matter in the ____________ can cause noisy operation and should be investigated.

A. Impeller