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2024 WATER TREATMENT OPERATOR CERTIFICATION AWWA STUDY GUIDE EXAM WITH CORRECT ANSWERS
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2024 WATER TREATMENT OPERATOR CERTIFICATION AWWA STUDY GUIDE EXAM WITH CORRECT ANSWERS
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2024 WATER TREATMENTOPERATOR CERTIFICATION AWWA
STUDY GUIDE EXAM WITH
CORRECT ANSWERS
A continuously flowing watercourse - CORRECT-ANSWERSPerennial Stream
Algae causes PH to ....... at night - CORRECT-ANSWERSDecrease
Optimal flouride concentration in drinking water is set in relation to the........ -
CORRECT-ANSWERSAnnual average maximum daily air temp
What test is used to determine optimal coagulant dosage - CORRECT-
ANSWERSJar Test
Sequence of growth in a multiple-tube fermentation method - CORRECT-
ANSWERSLTB, BGB, and EMB. Lauryl Tryptose Broth, Eosin Methylene Blue,
Brilliant Green lactose Bile Broth
Giardia cysts range in size from - CORRECT-ANSWERS8 to 20 microns
Quantity of oxygen that can be dissolved in water is directly related to........ -
CORRECT-ANSWERSTemperature
What is apparent color - CORRECT-ANSWERScolor in sample before it is
filtered
Grease lubricated bearings should be regreased at what frequency? -
CORRECT-ANSWERS3 - 6 Months
Check valves prevent ........... - CORRECT-ANSWERSWater from flowing in two
directions
Packing joints should be....... - CORRECT-ANSWERSStaggered
Primary function of couplings - CORRECT-ANSWERSCompensate for
alignment changes
How do you determine watts - CORRECT-ANSWERS(amps)x(volts)
, What are the different types of pumps - CORRECT-ANSWERSCentrifugal,
positive displacement, and turbine
What does a hypochlorinator do? - CORRECT-ANSWERSFeed a liquid chlorine
solution into a water supply
What causes water hammer - CORRECT-ANSWERSopening or closing a valve
too fast
When should a positive displacement pump be operated? - CORRECT-
ANSWERSWhen suction and discharge valves are open
How much does a 1-ton cylinder weigh? - CORRECT-ANSWERS3,700 lbs
Pumps seals are classified how? - CORRECT-ANSWERSPacking ring or
mechanical
What causes pumps to make a pinging sound - CORRECT-
ANSWERScavitation
What is the main purpose of priming - CORRECT-ANSWERSReplace air with
water inside the pump
What is the purpose of a vacuum regulator - CORRECT-ANSWERSStop flow of
chlorine gas if a leak develops
Mechanical seals are appropriate for pumps operating under....... - CORRECT-
ANSWERSHigh suction head
What valve is most suitable for a throttling application - CORRECT-
ANSWERSPressure reducing valve
Valve installed at the end of the suction pipe on a centrifugal pump is
called...... - CORRECT-ANSWERSa foot valve
(Pump efficiency) x (Motor efficiency) - CORRECT-ANSWERSWire to water
efficiency
Opening the discharge valve one full turn on a chlorine cylinder will........ -
CORRECT-ANSWERSPermit maximum discharge
What is the "C Value" - CORRECT-ANSWERSNumber that describes
smoothness of the interior of a pipe
Tubercles form on what kind of pipe - CORRECT-ANSWERSDuctile iron
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