2
Wastewater Collections Level II Questions with accurate || || || || || || ||
detailed solutions ||
Wet well probe systems are usually used for---- determination(s) of level.
|| || || || || || || || || || ||
A. Approximate
|| ||
B. Dual point
|| ||
C. continuous
|| ||
D. Single point - ✔✔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 - ✔✔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 - ✔✔D. Settleable solids
|| || || || || ||
What determines the amount of hydrogen sulfide produced in a sewer?
|| || || || || || || || || ||
A. BOD concentration
|| || ||
B. DO concentration
|| || ||
C. pH
||
,2
D. SS concentration - ✔✔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
|| || || || ||
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 - ✔✔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 - ✔✔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 - ✔✔C. Opens the circuit
|| || || || || || || ||
Plastic (PVC) pipe exposed to sunlight requires?
|| || || || || ||
A. a protective coating
|| || ||
B. Solvent weld fittings
|| || || ||
C. Special vertical support
|| || || ||
, 2
D. Nothing special - ✔✔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 - ✔✔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?
|| || || || || || || || || || || || || || ||
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 - ✔✔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 - ✔✔D. Work order system
|| || || || || || || ||
What is the V-notch weir best suited for measuring?
|| || || || || || || ||
A. large constant flows
|| || || ||
B. large irregular flows
|| || || ||
Wastewater Collections Level II Questions with accurate || || || || || || ||
detailed solutions ||
Wet well probe systems are usually used for---- determination(s) of level.
|| || || || || || || || || || ||
A. Approximate
|| ||
B. Dual point
|| ||
C. continuous
|| ||
D. Single point - ✔✔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 - ✔✔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 - ✔✔D. Settleable solids
|| || || || || ||
What determines the amount of hydrogen sulfide produced in a sewer?
|| || || || || || || || || ||
A. BOD concentration
|| || ||
B. DO concentration
|| || ||
C. pH
||
,2
D. SS concentration - ✔✔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
|| || || || ||
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 - ✔✔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 - ✔✔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 - ✔✔C. Opens the circuit
|| || || || || || || ||
Plastic (PVC) pipe exposed to sunlight requires?
|| || || || || ||
A. a protective coating
|| || ||
B. Solvent weld fittings
|| || || ||
C. Special vertical support
|| || || ||
, 2
D. Nothing special - ✔✔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 - ✔✔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?
|| || || || || || || || || || || || || || ||
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 - ✔✔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 - ✔✔D. Work order system
|| || || || || || || ||
What is the V-notch weir best suited for measuring?
|| || || || || || || ||
A. large constant flows
|| || || ||
B. large irregular flows
|| || || ||
