Water Distribution Practice Exam 2 (D1-D2) 100% Correct Answers | Verified | Latest 2024 Version

Which process converts ammonia to nitrite and nitrate? - Nitrification What is the maximum advisable rate of chlorine gas removal from a 150- pound cylinder? - 40 pounds per day What is a type of positive displacement water meter? - Nutating- disk meter What is a power-operated mechanism for opening and closing a valve? - Actuator What is required if a routine sample test positive for total coliform bacteria? - Take repeat samples Why is a grid layout better than a tree layout for a water distribution system? - Less dead-end mains What is the purpose of a reduced pressure principle assembly? - Prevents back-pressure and backsiphonage In general, at what depths is shoring required for a trench, if you're excavating in soil? - 5 feet or deeper