GRADE 1 WATER DISTRIBUTION STUDY QUESTIONS WITH COMPLETE SOLUTIONS

WATER DISTRIBUTION GRADE 1
CERTIFICATION ADEQ PRACTICE EXAM
WITH COMPLETE SOLUTIONS
Whataisatheageneraladefinitionaofaanaion?
aAna_________awithaaapositiveaoranegativeachargea-aans--Atom




Aacontinuousapositiveapressureainaaadistributionasystemaisaessentialaforapreventingawhataev
ent?a-aans--BackflowaEvent

_____________awaterapressureamustabeamaintainedatoaensureaadequateacustomeraservic
eaduringapeakaflowaperiods.aHowever,aminimumapositiveapressureamustabeamaintainedaina
mainsatoaprotectaagainstabackflowaorabacksiphonageafromacross-connections.a-aans--
Minimum

NameatheamostacommonaCAUSEaforapublicawaterasupplyacontamination.a_____________
____aoracross-connectiona-aans--Backflow

Whatadoesaaabacksiphonageaconditionausuallyacause?
a__________apressureaoranegativeapressureaonatheaserviceaorasupplyaside.a-aans--

Reduced

Whatadoesaaadoubleacheckavalveabackflowaassemblyaprovideaeffectiveaprotectionafrom?
aBothabackpressureaandabacksiphonageaofa____________.a-aans--Pollution




Whataisaequipmentathatautilizesawateraforacooling,alubrication,awashingaoraasaaasolventaalw
aysasusceptibleato?a-aans--Cross-Connection

Whataisatheadifferenceabetweenaaareducedapressureaprincipleabackflowadeviceaandaaadoubl
eacheckabackflowadevice?aTheaRPahasaaa______________.a-aans--ReliefaValve

Whataisatheamaximumatimeaperiodabetweenahavingaaabackflowadeviceatestedabyaaacertifieda
backflowatester?a______________ayear.a-aans--1

Whataisathearegulatoryadefinitionaofaaacross-connectionainaaawaterasupply?
aAaphysicalaconnectionabetweenaaapublicawaterasystemaandaanyasourceaofawateraoraotheras

ubstanceathatamayaleadatoacontaminationaofatheawateraprovidedabyathea_____________athr
oughabackflow.a-aans--PWS

Whataisatheanameaofaaatypeaofavalveathatareducesatheadifferentialapressureaacrossaaacloseda
diskamakingatheamainavalveaeasieratoaopenaandaclose?a-aans--BypassaValve

, AsasoonaasaCl2agasaentersatheathroataarea,aaavictimawillasenseaaasuddenastrictureainathisaar
ea-
Nature'sawayaofasignalingatoapreventapassageaofatheagasatoathealungs.aAtathisapoint,atheavicti
mamustaattemptatoadoatwoathings:agetaoutaofatheaareaaofathealeak,aproceedingaupwind,aandat
oatakeaonlyaveryashortabreathsathroughatheamouth.aNormalabreathingawillacausea________
__,awhichamustabeapreventedaifapossible.a-aans--Coughing

Chlorineagasacausesasuffocation,aconstrictionaofatheachest,atightnessainatheathroat,aandaede
maaofathea______________.a-aans--Lungs

_______________aavailableachlorineaisaveryaeffectiveainakillingabacteria.a-aans--Free

Howashouldaanaoperatorastoreaanaemptyachlorineacylinder?
a____________, ataggedaasaempty.a-aans--Upright




Ifaaachlorinealeakaoccurs,awhereawillachlorineagasaaccumulate?
aNearathea____________ aofatheatank.a-aans--Bottom




Whataeffectadoesachlorineagasahaveaonatheasenseaofasmell?
aItaproducesaolfactorya_______________. a-aans--Fatigue




Whataisatheaprimaryasafetyaconcernawhenausingachlorineagasaasaopposedatoacalciumahypoc
hloriteaorasodiumahypochlorite?aTheapotentialaforaaa_____________aleak.a-aans--Gas

Whatamayaoccuradueatoachronicaexposureatoalowaconcentrationsaofachlorineagas?
aChronicaexposureamayacauseacorrosionaofathea_____________.a-aans--Teeth




Whataisatheaprocessacalledathatachangesawateravaporatoatinyadropletsaoraiceacrystals?a-
aans--Condensation




Whataisatheaunitaofameasurementaforasound?a-aans--Decibels

Whatahappensaifagreaseacomesainacontactawithatheawindingaofaaamotor?a-aans--
Theawindingainsulationamyadeteriorate.

Whataisatheamostacommonatypeaofavalveausedainaisolatingaaasmallaoramediumasizedasectiona
ofaaadistributionasystem?a-aans--Gate

Whataisaaapossiblearesultaofaoveragreasingaaabearing?
aThereaisaextremea_____________ ainatheabearingachamberacausingaheataandascoringaofath

eashaft.a-aans--Friction

Whataisameantabyatheaterma"peakademand?"aThea_____________amomentaryaloadaplaced
aonaaawateratreatmentaplant,apumpingastationaoradistributionasystem.a-aans--Maximum




WhataisathearangeaofatheapHascale?abetweena_____________-14.a-aans--Zero