Water Distribution Grade 1 Exam Study Guide Questions with Correct Answers

Water Distribution Grade 1 Exam Study Guide Questions with Correct Answers Drawdown - Correct Answer The difference between the static groundwater and the pumping level. Pumping - static = drawdown A customer complaint about the presence of brown floc in tap water can best be handled by...? - Correct Answer investigating the problem ASAP. The term "aquifer" refers to what type of water? - Correct Answer Groundwater One indication of corrosive water is a high concentration of...? - Correct Answer Carbon dioxide. CO2 in water creates carbonic acid, which drives down the pH, making the water acidic. Cathodic protection means protection against what? - Correct Answer Corrosion. The primary reason for the use of a dry barrel fire hydrant is to...? - Correct Answer keep the hydrant from freezing. At the same barometric pressure, the amount of dissolved oxygen in cold water tends to be ______ the amount of dissolved oxygen in warm water. - Correct Answer More than. Denser water molecules hold onto oxygen more than the less dense do. The principal constituent in water that causes corrosion of metals is...? - Correct Answer hydrogen sulfide Which component of a centrifugal pump moves the water? - Correct Answer the impeller