1|Page
ALABAMA WASTEWATER COLLECTION GRADE 1 CLASS C EXAM ||
ACCURATE AND FREQUENTLY TESTED QUESTIONS AND 100%
CORRECT ANSWERS WITH RATIONALES|| LATEST AND COMPLETE
UPDATE WITH EXPERT VERIFIED SOLUTIONS
A manhole with a center grating is normally used for
a. Venting
b. Storm sewers
c. Sanitary sewers
d. None of the above - ANSWER: b. Storm sewers
A pig would be used as in a force
main.
a. A reamer
b. A stopper
c. A Float
d. A tell tale - ANSWER: a. A reamer
A minimum scouring velocity of 2 ft/sec in sewers is
necessary so that
a. Flow velocities can be estimated between manholes
b. Roots won't grow in sewers
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c. Sewer pipes won't become eroded on the bottom
d. Solids won't build up in a sewer and
reduce flow capacity - ANSWER: d. Solids won't build up in a sewer and reduce flow
capacity
A cross connection is best defined as
a. Ground water entering a gravity sewer through
cracks in the piping
b. A lateral line connected to the main illegally
c. Storm drainage piped into a domestic
collection system
d. A potable water supply connected to a potential source
of pollution. - ANSWER: d. A potable water supply connected to a potential source of
pollution.
When dealing with collection systems, I & I refers to
a. Inflow and inspection
b. inspection and information
c. infiltration and inflow
d. None of the above - ANSWER: c. infiltration and inflow
Corrosion of sewer pipes may be caused by
a. Laminar flow through them
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b. Oils in wastewater
c. Fungi
d. Acids in water - ANSWER: d. Acids in water
In a collection system, wastewater that contains no "free" of dissolved oxygen is
referred to as
a. Aerobic
b. Anaerobic
c. Ambient
d. Debris - ANSWER: b. Anaerobic
The primary reason why it is important not to have cross-connections of sewers with
water supplies systems is
a. Possible overloading of water systems
b. Possible loss of drinking water pressure
c. Possible drinking water contamination
d. Low of wastewater from the sewerage system - ANSWER: c. Possible drinking water
contamination
A pig would likely be used for cleaning of a
a. Gravity sewer
b. Storm sewer
c. Force main
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d. House or building sewer - ANSWER: c. Force main
Flow rates can be expressed in which of the following units
a. in³
b. gal/lb
c. mgd
d. Lb/mil - ANSWER: c. mgd
A sewer manhole is
a. The lowest point in the channel
b. a gate that opens or closes swinging around a
set of hinges
c. An opening in a sewer provided for the purpose
of access
d. A small hole in a sewer where a wastewater service
line connects - ANSWER: c. An opening in a sewer provided for the purpose of
access
The crown of a sewer pipe is the
a. Bottom
b. Top
c. Flow line
ALABAMA WASTEWATER COLLECTION GRADE 1 CLASS C EXAM ||
ACCURATE AND FREQUENTLY TESTED QUESTIONS AND 100%
CORRECT ANSWERS WITH RATIONALES|| LATEST AND COMPLETE
UPDATE WITH EXPERT VERIFIED SOLUTIONS
A manhole with a center grating is normally used for
a. Venting
b. Storm sewers
c. Sanitary sewers
d. None of the above - ANSWER: b. Storm sewers
A pig would be used as in a force
main.
a. A reamer
b. A stopper
c. A Float
d. A tell tale - ANSWER: a. A reamer
A minimum scouring velocity of 2 ft/sec in sewers is
necessary so that
a. Flow velocities can be estimated between manholes
b. Roots won't grow in sewers
,2|Page
c. Sewer pipes won't become eroded on the bottom
d. Solids won't build up in a sewer and
reduce flow capacity - ANSWER: d. Solids won't build up in a sewer and reduce flow
capacity
A cross connection is best defined as
a. Ground water entering a gravity sewer through
cracks in the piping
b. A lateral line connected to the main illegally
c. Storm drainage piped into a domestic
collection system
d. A potable water supply connected to a potential source
of pollution. - ANSWER: d. A potable water supply connected to a potential source of
pollution.
When dealing with collection systems, I & I refers to
a. Inflow and inspection
b. inspection and information
c. infiltration and inflow
d. None of the above - ANSWER: c. infiltration and inflow
Corrosion of sewer pipes may be caused by
a. Laminar flow through them
,3|Page
b. Oils in wastewater
c. Fungi
d. Acids in water - ANSWER: d. Acids in water
In a collection system, wastewater that contains no "free" of dissolved oxygen is
referred to as
a. Aerobic
b. Anaerobic
c. Ambient
d. Debris - ANSWER: b. Anaerobic
The primary reason why it is important not to have cross-connections of sewers with
water supplies systems is
a. Possible overloading of water systems
b. Possible loss of drinking water pressure
c. Possible drinking water contamination
d. Low of wastewater from the sewerage system - ANSWER: c. Possible drinking water
contamination
A pig would likely be used for cleaning of a
a. Gravity sewer
b. Storm sewer
c. Force main
, 4|Page
d. House or building sewer - ANSWER: c. Force main
Flow rates can be expressed in which of the following units
a. in³
b. gal/lb
c. mgd
d. Lb/mil - ANSWER: c. mgd
A sewer manhole is
a. The lowest point in the channel
b. a gate that opens or closes swinging around a
set of hinges
c. An opening in a sewer provided for the purpose
of access
d. A small hole in a sewer where a wastewater service
line connects - ANSWER: c. An opening in a sewer provided for the purpose of
access
The crown of a sewer pipe is the
a. Bottom
b. Top
c. Flow line
