WASTEWATER OPERATOR CLASS C EXAM PRACTICE
REVIEW
When mChlorine mis mcombined mwith mwater mwhat mtype mof mpipe mshould mbe mused?
A. mDuctile miron
B. mAsbestos mconcrete
C. mPVC
D. mCarbon mSteel m- m"ACCURATE mANSWER" mC. mPVC
A mgood msettling msludge mwould mconsist mof mwhat mtype mof mprotozoa?
A. mRotifers mand mnematodes
B. mAmoebas mand mFlagellates
C. mStalked mciliates mand mmastagoria
D. mFree mswimmers mand mstalk mciliates m- m"ACCURATE mANSWER" mD. mFree mswimmers
mand mstalk mciliates
What mis mPhenolphylein mused mfor min mtitration
A. mOxidizer
B. mIndicator
C. mAcid mreducer mto mlower mpH
D. mApplicator m- m"ACCURATE mANSWER" mB. mIndicator
Your mplant mhas man minfluent mof m220 mBOD mand m163 mTSS, mand man meffluent mof m10
mBOD, mand m6 mTSS. mWhat mis mthe mBOD mremoval mefficiency min myour mplant?
A. m92%
B. m94%
C. m95%
D. m96% m- m"ACCURATE mANSWER" mC. m95%
You msuspect myour manaerobic mdigester mis mgoing msour. mWhat mis mthe mbest mway mto
mverify mits mcondition?
A. mpH
B. mFoam mtype
C. mVA/ALK mratio
D. mDO m- m"ACCURATE mANSWER" mC. mVA/ALK mratio
Before moperating many mpiece mof mequipment mwhat mshould mbe mdone?
A. mLock mout mTag mout m(remember, msafety mfirst!)
B. mRead mO m& mM mmanual
C. mRead mmanufacturers mmanual
D. mNotify msupervisor m- m"ACCURATE mANSWER" mC. mRead mmanufacturers mmanual
, Detritus mis mnoticed min myour mgrit mchannel. mWhat mis mthe mproblem?
A. mVelocity mtoo mfast mwith mshort mD/T
B. mVelocity mtoo mlow mwith mlong mD/T
C. mShort mcircuiting
D. mDensity mcurrents m- m"ACCURATE mANSWER" mB. mVelocity mtoo mlow mwith mlong mD/T
What mis mconsidered mnormal moperation mof man maerobic mdigester?
A. mFill mreact
B. mSkim moff mfoam mwhen mneeded
C. mSettle mand mDecant mas mneeded
D. mFeed monly mduring mlow mflow mor mconstant mwhen mthe msun mis mout m- m"ACCURATE
mANSWER" mC. mSettle mand mDecant mas mneeded
A mplant mwith ma mflow mof m1 mMGD mshould mbe mmonitored
A. mContinuously
B. mIntermittently
C. mDaily
D. mEvery mfour mhours mdepending mon msurface mload m- m"ACCURATE mANSWER" mA.
mContinuously
What mdo mtotal msolids mconsist mof?
A. mDissolved mand msettleable
B. mFloatable mand msettlable
C. mSuspended mand mdissolved
D. mSettlable mand mnonsettleable m- m"ACCURATE mANSWER" mC. mSuspended mand mdissolved
What mwould mcause mexcessive mwear mon mbearing?
A. mMisalignment
B. mReduced mOil mdue mto mlow mviscosity
C. mBlow mseal
D. mOver mtubercation m- m"ACCURATE mANSWER" mA. mMisalignment
Amperometric mtitration mis mused mto mmeasure
A. mDissolved msolids
B. mChlorine mresidual
C. mColloids
D. mEmulsions m- m"ACCURATE mANSWER" mB. mChlorine mresidual
What mgrowth mphase mis man maerobic mdigester moperated min.
A. mLog
B. mLag
C. mEndogenous mrespiration
D. mDeclining mphase m- m"ACCURATE mANSWER" mC. mEndogenous mrespiration
If mexcessive mpressure mbuilds mup min ma mchlorine mtank mdue mto mexcessive mheat.
mWhat mwill mprevent mexplosions?
A. mValve mseat madjustments
B. mHeat mreducing mvalve
C. mFusible mplug
REVIEW
When mChlorine mis mcombined mwith mwater mwhat mtype mof mpipe mshould mbe mused?
A. mDuctile miron
B. mAsbestos mconcrete
C. mPVC
D. mCarbon mSteel m- m"ACCURATE mANSWER" mC. mPVC
A mgood msettling msludge mwould mconsist mof mwhat mtype mof mprotozoa?
A. mRotifers mand mnematodes
B. mAmoebas mand mFlagellates
C. mStalked mciliates mand mmastagoria
D. mFree mswimmers mand mstalk mciliates m- m"ACCURATE mANSWER" mD. mFree mswimmers
mand mstalk mciliates
What mis mPhenolphylein mused mfor min mtitration
A. mOxidizer
B. mIndicator
C. mAcid mreducer mto mlower mpH
D. mApplicator m- m"ACCURATE mANSWER" mB. mIndicator
Your mplant mhas man minfluent mof m220 mBOD mand m163 mTSS, mand man meffluent mof m10
mBOD, mand m6 mTSS. mWhat mis mthe mBOD mremoval mefficiency min myour mplant?
A. m92%
B. m94%
C. m95%
D. m96% m- m"ACCURATE mANSWER" mC. m95%
You msuspect myour manaerobic mdigester mis mgoing msour. mWhat mis mthe mbest mway mto
mverify mits mcondition?
A. mpH
B. mFoam mtype
C. mVA/ALK mratio
D. mDO m- m"ACCURATE mANSWER" mC. mVA/ALK mratio
Before moperating many mpiece mof mequipment mwhat mshould mbe mdone?
A. mLock mout mTag mout m(remember, msafety mfirst!)
B. mRead mO m& mM mmanual
C. mRead mmanufacturers mmanual
D. mNotify msupervisor m- m"ACCURATE mANSWER" mC. mRead mmanufacturers mmanual
, Detritus mis mnoticed min myour mgrit mchannel. mWhat mis mthe mproblem?
A. mVelocity mtoo mfast mwith mshort mD/T
B. mVelocity mtoo mlow mwith mlong mD/T
C. mShort mcircuiting
D. mDensity mcurrents m- m"ACCURATE mANSWER" mB. mVelocity mtoo mlow mwith mlong mD/T
What mis mconsidered mnormal moperation mof man maerobic mdigester?
A. mFill mreact
B. mSkim moff mfoam mwhen mneeded
C. mSettle mand mDecant mas mneeded
D. mFeed monly mduring mlow mflow mor mconstant mwhen mthe msun mis mout m- m"ACCURATE
mANSWER" mC. mSettle mand mDecant mas mneeded
A mplant mwith ma mflow mof m1 mMGD mshould mbe mmonitored
A. mContinuously
B. mIntermittently
C. mDaily
D. mEvery mfour mhours mdepending mon msurface mload m- m"ACCURATE mANSWER" mA.
mContinuously
What mdo mtotal msolids mconsist mof?
A. mDissolved mand msettleable
B. mFloatable mand msettlable
C. mSuspended mand mdissolved
D. mSettlable mand mnonsettleable m- m"ACCURATE mANSWER" mC. mSuspended mand mdissolved
What mwould mcause mexcessive mwear mon mbearing?
A. mMisalignment
B. mReduced mOil mdue mto mlow mviscosity
C. mBlow mseal
D. mOver mtubercation m- m"ACCURATE mANSWER" mA. mMisalignment
Amperometric mtitration mis mused mto mmeasure
A. mDissolved msolids
B. mChlorine mresidual
C. mColloids
D. mEmulsions m- m"ACCURATE mANSWER" mB. mChlorine mresidual
What mgrowth mphase mis man maerobic mdigester moperated min.
A. mLog
B. mLag
C. mEndogenous mrespiration
D. mDeclining mphase m- m"ACCURATE mANSWER" mC. mEndogenous mrespiration
If mexcessive mpressure mbuilds mup min ma mchlorine mtank mdue mto mexcessive mheat.
mWhat mwill mprevent mexplosions?
A. mValve mseat madjustments
B. mHeat mreducing mvalve
C. mFusible mplug
