Wastewater Collections Level II Questions and Answers
Wet well probe systems are usually used for---- D. Single point
determination(s) of level.
A. Approximate
B. Dual point
C. continuous
D. Single point
A foreman's monthly report should include the B. Number of complaints received and investigated.
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
Solids that settle out in the bottom of a wet well are called D. Settleable solids
A. scum
B. Colloidal solids
C. suspended solids
D. Settleable solids
What determines the amount of hydrogen sulfide produced C. pH
in a sewer?
A. BOD concentration
B. DO concentration
C. pH
D. SS concentration
Two pumps of the same capacity operate together with a B. more than one pump, but not twice as much
single main. The discharge will be--- in a typical pump
station.
A. the same as one pump
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
Which of the following is an indicator normally used for D. Coliforms
determination of water pollution?
A. Fungi
B. Stapylococcus
C. Algae
D. Coliforms
What function does a ground fault circuit interrupter (GFCI) C. Opens the circuit
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
Plastic (PVC) pipe exposed to sunlight requires? A. a protective coating
A. a protective coating
B. Solvent weld fittings
C. Special vertical support
D. Nothing special
The most important factor affecting the useful life of piping A. The ability of the materials used to resist internal and external corrosion
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
, Wastewater Collections Level II Questions and Answers
Sewers located adjacent to a ground level storage B. to protect the storage reservoir from contamination
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?
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
The best way to track all maintenance work done is D. Work order system
through a
A. closed circuit TV
B. polaroid system
C. tape recorder
D. work order system
What is the V-notch weir best suited for measuring? C. Small constant flows
A. large constant flows
B. large irregular flows
C. small constant flows
D. small irregular flows
Which of the following is best qualified to work on an C. Electrician
electrical panel?
A. maintenance man
B. supervisor
C. electrician
D. crew leader
The testing procedure where a solution is added drop by C. Titration
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
What are the three basic classes of hazardous D. Poisonous, explosive, oxygen deficient
atmospheres?
A. Gaseous, liquid, combustible
B. poisonous, gaseous, toxic
C. toxic, perilous, poisonous
D. poisonous, explosive, oxygen deficient
What is the chemical symbol for sulfuric acid? B. H2SO4
A. HCI
B. H2SO4
C. CaSO4
D. SuAc3
A sewer blockage has been cleared by rodding. What C. Clean the sewer hydraulically to restore full capacity
should be done to the cleared sewer next?
A. allow the sewer to rest
B. check the sewer for proper exfiltration
C. clean the sewer hydraulically to restore full capacity
D. clear the sewer with a bucket machine
If an air compressor has excessive oil consumption, the B. External oil leaks
most likely cause of the problem would be
A. a broken drive coupling
B. external oil leaks
C. a faulty pump
D. worn rotor vanes
Wet well probe systems are usually used for---- D. Single point
determination(s) of level.
A. Approximate
B. Dual point
C. continuous
D. Single point
A foreman's monthly report should include the B. Number of complaints received and investigated.
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
Solids that settle out in the bottom of a wet well are called D. Settleable solids
A. scum
B. Colloidal solids
C. suspended solids
D. Settleable solids
What determines the amount of hydrogen sulfide produced C. pH
in a sewer?
A. BOD concentration
B. DO concentration
C. pH
D. SS concentration
Two pumps of the same capacity operate together with a B. more than one pump, but not twice as much
single main. The discharge will be--- in a typical pump
station.
A. the same as one pump
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
Which of the following is an indicator normally used for D. Coliforms
determination of water pollution?
A. Fungi
B. Stapylococcus
C. Algae
D. Coliforms
What function does a ground fault circuit interrupter (GFCI) C. Opens the circuit
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
Plastic (PVC) pipe exposed to sunlight requires? A. a protective coating
A. a protective coating
B. Solvent weld fittings
C. Special vertical support
D. Nothing special
The most important factor affecting the useful life of piping A. The ability of the materials used to resist internal and external corrosion
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
, Wastewater Collections Level II Questions and Answers
Sewers located adjacent to a ground level storage B. to protect the storage reservoir from contamination
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?
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
The best way to track all maintenance work done is D. Work order system
through a
A. closed circuit TV
B. polaroid system
C. tape recorder
D. work order system
What is the V-notch weir best suited for measuring? C. Small constant flows
A. large constant flows
B. large irregular flows
C. small constant flows
D. small irregular flows
Which of the following is best qualified to work on an C. Electrician
electrical panel?
A. maintenance man
B. supervisor
C. electrician
D. crew leader
The testing procedure where a solution is added drop by C. Titration
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
What are the three basic classes of hazardous D. Poisonous, explosive, oxygen deficient
atmospheres?
A. Gaseous, liquid, combustible
B. poisonous, gaseous, toxic
C. toxic, perilous, poisonous
D. poisonous, explosive, oxygen deficient
What is the chemical symbol for sulfuric acid? B. H2SO4
A. HCI
B. H2SO4
C. CaSO4
D. SuAc3
A sewer blockage has been cleared by rodding. What C. Clean the sewer hydraulically to restore full capacity
should be done to the cleared sewer next?
A. allow the sewer to rest
B. check the sewer for proper exfiltration
C. clean the sewer hydraulically to restore full capacity
D. clear the sewer with a bucket machine
If an air compressor has excessive oil consumption, the B. External oil leaks
most likely cause of the problem would be
A. a broken drive coupling
B. external oil leaks
C. a faulty pump
D. worn rotor vanes
