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If you’re getting ready to take the Water Distribution Operator Certification Exam, watch this video, which covers 4 practice problems.  It’s fairly short, but it contains helpful information that can be used as a study guide.  The practice problems that are covered in this video are the type of questions you will see on the Water Distribution Operator Certification Exam.        

Here’s a summary of what's covered in the video.  The answers to the questions are at the bottom of this page.  

PRACTICE PROBLEMS

At what depths is shoring required in a trench if it’s excavated in soil?

A.  3 feet or deeper

B.  4 feet or deeper

C.  5 feet or deeper

D.  6 feet or deeper



2.  Which of the following is a positive displacement meter?

A.  Venturi meter  

B.  Turbine meter

C.  Nutating disc meter

D.  Propeller meter



3.  What does the C factor for a pipe represent?

A.  Strength of the pipe  

B.  Flexibility of the pipe

C.  Thickness of the pipe

D.  Roughness of the pipe interior



4.  What is used to locate a chlorine gas leak?

A.  Hydrogen peroxide

B.  Ammonia solution

C.  Sulfur

D.  Distilled water


ANSWERS:

1.  C. (5 feet or deeper)


2.  C. (Nutating disc meter)


3.  D. (Roughness of the pipe interior)


4.  B. (Ammonia solution)