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Wet well probe systems are usually used for---- determination(s) of level.
A. Approximate
B. Dual point
C. continuous
D. Single point Answer: D. Single point
A foreman's monthly report should include the
A. Last time the supervisor read the report
B. Number of complaints received and investigated
C. number of monthly reports prepared
D. Number if qualifiable worker's available Answer: B. Number of complaints received and
investigated.
Solids that settle out in the bottom of a wet well are called
A. scum
B. Colloidal solids
C. suspended solids
D. Settleable solids Answer: D. Settleable solids
What determines the amount of hydrogen sulfide produced in a sewer?
A. BOD concentration
B. DO concentration
C. pH
D. SS concentration Answer: C. pH
Two pumps of the same capacity operate together with a single main. The discharge will
be--- in a typical pump station.
A. the same as one pump
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,B. more than one pump, but not twice as much
C. twice as much as one pump
D. more than twice as much as one pump Answer: B. more than one pump, but not twice
as much
Which of the following is an indicator normally used for determination of water pollution?
A. Fungi
B. Stapylococcus
C. Algae
D. Coliforms Answer: D. Coliforms
What function does a ground fault circuit interrupter (GFCI) perform when there is an
imbalance of current between the hot and neutral conductors of a circuit?
A. bypass the ground fault
B. grounds the equipment
C. opens the circuit
D. rebalances the current Answer: C. Opens the circuit
Plastic (PVC) pipe exposed to sunlight requires?
A. a protective coating
B. Solvent weld fittings
C. Special vertical support
D. Nothing special Answer: A. a protective coating
The most important factor affecting the useful life of piping is?
A. The ability of the materials used to resist internal and external corrosion
B. the depth of the pipe
C. the flexibility of the pipe
D. the smoothness of the inside of the pipe Answer: A. The ability of the materials used to
resist internal and external corrosion
Sewers located adjacent to a ground level storage reservoir are required to be located at
least 10 feet from the structure and constructed of watermain-type materials for a distance
of at least 50 feet from the storage reservoir. What is the reason for the requirement?
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, A. to prevent a high ground water table adjacent to the reservoir
B. to protect the storage reservoir from contamination
C. to reduce infiltration into the sewer
D. because vitrified-clay sewer pipe is easily broken Answer: B. to protect the storage
reservoir from contamination
The best way to track all maintenance work done is through a
A. closed circuit TV
B. polaroid system
C. tape recorder
D. work order system Answer: D. Work order system
What is the V-notch weir best suited for measuring?
A. large constant flows
B. large irregular flows
C. small constant flows
D. small irregular flows Answer: C. Small constant flows
Which of the following is best qualified to work on an electrical panel?
A. maintenance man
B. supervisor
C. electrician
D. crew leader Answer: C. Electrician
The testing procedure where a solution is added drop by drop until the desired change in a
second solution is observed is
A. drop addition
B. secondary ion addition
C. titration
D. zwitter ion addition Answer: C. Titration
What are the three basic classes of hazardous atmospheres?
A. Gaseous, liquid, combustible
B. poisonous, gaseous, toxic
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