Exam (elaborations)
CLASS C WATER OPERATOR LICENSE EXAM
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CLASS C WATER OPERATOR LICENSE EXAM
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CLASS C WATEROPERATOR
LICENSE EXAM
Ammonia mixed with chlorine gas creates a - Answers-white smoke
The most difficult part of a water distribution operator's job. - Answers-furnish a
continuous supply
Physical connection between a safe and potentially unsafe water source. - Answers-
cross connection
A distribution system is a - Answers-looped system
Dead end mains should be flushed - Answers-every month
Excess nitrate causes a condition called - Answers-blue baby syndrome
Water hardness is caused by - Answers-calcium and magnesium
Sewer mains should be __ft away from water mains. - Answers-9
Water with a pH less than 7 is considered to be - Answers-acidic
Bacti records are kept for ____yrs and chemical records are kept for ___yrs. - Answers-
5, 10
Bacti samples have to be returned to the lab within ___hrs of the collection time. -
Answers-30
Color in the water supply should be less than _____ units. - Answers-15
, Chlorine is ______ times heavier than air. - Answers-2.5
90% of underground pipe failures are related to improper - Answers-backfill and bedding
The spoil bank should be located at least ___ft away from the ditch. - Answers-2
The following minimum residuals is ______mg/L for free chlorine and ____mg/L for total
chlorine. - Answers-.2, .5
Public opinion of the water utility is _______ at a standstill. - Answers-never
A bacti sample should be taken every ____ft of pipe. - Answers-1000
The most common collection point for a bacti sample is the water tap _______. -
Answers-outside the house
A standpipe is considered ground storage unless it exceeds _____ft above the highest
________. - Answers-80, service connection
________ protection is the electrochemical method for preventing ________ of metal
tanks. - Answers-cathodic, corrosion
The _____ is the only cross connection control method approved by _______. -
Answers-air gap, tceq
_______ on a pipeline depend on the _____ or coefficient of pipe roughness. -
Answers-friction loss, c factor
__________ occurs whenever there is a ______ in the velocity or direction of water
flow. - Answers-water hammer, sudden change
The ______ water pressure required by the rules and regulations is ____psi under any
and all conditions. - Answers-minimum, 20
100, 150, 200 and 250 are approved classes of _____ _____. - Answers-working
pressure
______ is used to anchor pipe bends. - Answers-concrete
A general deposit of mineral particles evenly along the inside of the pipe is ________. -
Answers-tuberculation
Shoring should be used if a ditch is ___ft or deeper. - Answers-5
A written sample writing plan is required for _______ monitoring. - Answers-coliform
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