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Exam (elaborations)

WATER DISTRIBUTION PRACTICE EXAM 2 (D1-D2) QUESTIONS WITH CORRECT ANSWERS 2025

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WATER DISTRIBUTION PRACTICE EXAM 2 (D1-D2) QUESTIONS WITH CORRECT ANSWERS 2025

Institution
WATER DISTRIBUTION D1 AND D2 CALIFORNIA
Course
WATER DISTRIBUTION D1 AND D2 CALIFORNIA









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Written for

Institution
WATER DISTRIBUTION D1 AND D2 CALIFORNIA
Course
WATER DISTRIBUTION D1 AND D2 CALIFORNIA

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Uploaded on
February 7, 2025
Number of pages
8
Written in
2024/2025
Type
Exam (elaborations)
Contains
Questions & answers

Subjects

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WATER DISTRIBUTION PRACTICE EXAM
2 (D1-D2) QUESTIONS WITH CORRECT
ANSWERS 2025
WhichRprocessRconvertsRammoniaRtoRnitriteRandRnitrate?R-RCORRECTRANSWERR-Nitrification



WhatRisRtheRmaximumRadvisableRrateRofRchlorineRgasRremovalRfromRaR150-RpoundRcylinder?R-
RCORRECTRANSWERR-40RpoundsRperRday




WhatRisRaRtypeRofRpositiveRdisplacementRwaterRmeter?R-RCORRECTRANSWERR-Nutating-RdiskRmeter



WhatRisRaRpower-operatedRmechanismRforRopeningRandRclosingRaRvalve?R-RCORRECTRANSWERR-Actuator



WhatRisRrequiredRifRaRroutineRsampleRtestRpositiveRforRtotalRcoliformRbacteria?R-RCORRECTRANSWERR-
TakeRrepeatRsamples



WhyRisRaRgridRlayoutRbetterRthanRaRtreeRlayoutRforRaRwaterRdistributionRsystem?R-RCORRECTRANSWERR-
LessRdead-endRmains



WhatRisRtheRpurposeRofRaRreducedRpressureRprincipleRassembly?R-RCORRECTRANSWERR-PreventsRback-
pressureRandRback-siphonage



InRgeneral,RatRwhatRdepthsRisRshoringRrequiredRforRaRtrench,RifRyou'reRexcavatingRinRsoil?R-
RCORRECTRANSWERR-5RfeetRorRdeeper




WhatRoccursRafterRbreakpointRchlorinationRisRachieved?R-RCORRECTRANSWERR-
FreeRavailableRchlorineRresidualRisRdirectlyRproportionalRtoRtheRamountRofRchlorineRadded



WhatRisRusedRtoRautomaticallyRshut-offRtheRflowRintoRaRtankRwhenRtheRwaterRlevelRreachesRaRpre-
determinedRlevel?R-RCORRECTRANSWERR-AltitudeRvalve

, WhatRwouldRbeRusedRtoRfindRaRchlorineRgasRleak,RwhichRproducesRwhiteRsmokeRwhenRitRreactsRwithRthisRsu
bstance?R-RCORRECTRANSWERR-SprayRammoniaRsolutionRvaporRnearRleak



WhatRcausesRstainingRofRplumbingRfixtures?R-RCORRECTRANSWERR-IronR&Rmanganese



HowRlongRshouldRyouRflushRwaterRbeforeRyouRcollectRaRbacteriologicalRsample?R-RCORRECTRANSWERR-
AsRlongRasRnecessaryRtoRflushRstagnantRwaterRfromRtheRserviceRpipe



WhatRisRtheRpurposeRofRaRsurgeRtank?R-RCORRECTRANSWERR-ProtectRpipelinesRfromRsuddenRhighRpressure



WhatRisRrecommendedRifRaRchlorineRgasRcylinderRisRleaking?R-RCORRECTRANSWERR-
RotateRtheRcylinderRandRturnRtheRleakRupwards



WhatRisRtheRpurposeRofRprimaryRMCL?R-RCORRECTRANSWERR-ToRprotectRhumanRhealth



WhatRproblemRcouldRbeRusedRbyRwaterRwithRaRpHRofR5.3?R-RCORRECTRANSWERR-Corrosión



WhatRisRaRcommonRwayRtoRconnectRaRnewRpipeRtoRanRexistingRpipe,RwhileRtheRlatterRisRpressurizedRandRin-
service?R-RCORRECTRANSWERR-WetRtapRorRhotRtap



WhatRimpactRwouldRorganicsRhaveRonRchlorineRdemand?R-RCORRECTRANSWERR-IncreaseRchlorineRdemand



WhatRisRdichloramine?R-RCORRECTRANSWERR-CombinedRchlorineRresidual



WhatRimpactRdoesRtuberculationRhaveRonRtheRinteriorRofRaRwaterRmain?R-RCORRECTRANSWERR-
CausesRroughRinteriorRofRtheRwaterRdueRtoRcorrosion



WhatRisRusedRtoRneutralizeRchlorineRresidualsRwhenRcollectingRaRwaterRsampleRforRbacteriologicalRanalysis
?R-RCORRECTRANSWERR-SodiumRthiosulfate



WhatRareRelectrodesRandRultrasonicRsignalsRusedRforRinRaRtank?R-RCORRECTRANSWERR-MonitorRwaterRlevel
R198,22
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