ABC Wastewater collection Level 3 Test Questions and
Answers Graded A
Turbidity in wastewater is caused by rate of discharge. Which of the causes listed
A. color below is incorrect?
B. dissolved calcium A. speed of motor too low
C. hardness B. pump not primed
D. finely divided suspended material - C. impeller clogged
ANSWER -D. finely divided suspended D. discharge head too low - ANSWER -D.
material discharge head too low
The gas most commonly associated with septic Metal pipes often fail because of
wastewater is A. back siphonage
A. carbon dioxide B. browning movement
B. carbon monoxide C. galvanic action
C. hydrogen sulfide D. reverse osmosis - ANSWER -C. galvanic
D. methane - ANSWER -C. hydrogen action
sulfide
When a fire hydrant is operated, it should be
How many cubic meters per second in 10 MGD? A. just opened enough to have a flow
A. 0.44 B. opened fully
B. 1.44 C. opened halfway
C. 4.73 D. regulated to flow required - ANSWER -B.
D. 24.62 - ANSWER -A. 0.44 opened fully
Mechanical ventilation of a lift station is required If the pump bearings on horizontal centrifugal
to pumps are over lubricated, the most important
A. lower temperatures to reduce proportion of effect is that the extra lubricant
hydrogen sulfide A. will result in smoother and more efficient
B. reduce chlorine demand operation of the pump
C. reduce corrosion B. will not make any difference in the operation of
D. increase DO in raw wastewater - the pump
ANSWER -C. reduce corrosion C. will be wasted
D. shaft or shaft sleeve will be damaged -
ANSWER -D. shaft or shaft sleeve will be
A wet well probe is usually used for ________ damaged
determination(s) of level.
A. approximate
B. dual point If packing is not maintained properly,
C. continuous A. cavitation damage will result
D. single point - ANSWER -D. single point B. impeller will corrode
C. loss of suction due to air being allowed to
enter pump
A pump is delivering at less than the expected D. shaft or shaft sleeve will be damaged -
, ABC Wastewater collection Level 3 Test Questions and
Answers Graded A
ANSWER -C. loss of suction due to air Generally, as an individual progresses upward in
being allowed to enter pump management, reliance on personal technical skill
A. changes to the more complex
B. decreases
In certain situations, a supervisor encourages the C. increases
employees to make their own decisions. This is D. remains the same - ANSWER -B.
considered to be decreases
A. against the rules to follow past experiences in
decision-making
B. bad form since the supervisor eventually loses Special parts that should be carried by the
control maintenance worker are usually listed in the
C. highly desirable, since it encourages A. machine blue print
employee growth and frees the B. machine history record
D. supervisor for other tasks C. machine manufacturer's manual
E. passing the buck - ANSWER -C. highly D. work order - ANSWER -C. machine
desirable, since it encourages employee growth manufacturer's manual
Successful communication requires mutual How can the supervisor be certain that scheduled
A. agreement maintenance is completed?
B. confusion A. ask the workers
C. transmission B. hire someone to inspect completed work
D. understanding - ANSWER -D. C. use a form that compares work assigned with
understanding work completed
D. wait and see if there are any failures -
ANSWER -C. use a form that compares
When a great deal of authority is delegated on work assigned with work completed
many levels, an organization may be described
as
A. authoritarian Word has just come down from the top that
B. centralized operating funds are being cut. How should this be
C. decentralized handled?
D. unstructured - ANSWER -C. A. cut the supplies and repairs in order to
decentralized balance the budget
B. fire some of the less-productive old employees
C. keep it quiet and do what you have to do--"The
Recognition and job security are indications of less said the better"
A. a good organization D. let the other personnel know what the situation
B. a good supervisor is and ask for their help - ANSWER -D. let
C. external morale factors the other personnel know what the situation is
D. internal morale factors - ANSWER -A. a and ask for their help
good organization
One opening has become available which would
Answers Graded A
Turbidity in wastewater is caused by rate of discharge. Which of the causes listed
A. color below is incorrect?
B. dissolved calcium A. speed of motor too low
C. hardness B. pump not primed
D. finely divided suspended material - C. impeller clogged
ANSWER -D. finely divided suspended D. discharge head too low - ANSWER -D.
material discharge head too low
The gas most commonly associated with septic Metal pipes often fail because of
wastewater is A. back siphonage
A. carbon dioxide B. browning movement
B. carbon monoxide C. galvanic action
C. hydrogen sulfide D. reverse osmosis - ANSWER -C. galvanic
D. methane - ANSWER -C. hydrogen action
sulfide
When a fire hydrant is operated, it should be
How many cubic meters per second in 10 MGD? A. just opened enough to have a flow
A. 0.44 B. opened fully
B. 1.44 C. opened halfway
C. 4.73 D. regulated to flow required - ANSWER -B.
D. 24.62 - ANSWER -A. 0.44 opened fully
Mechanical ventilation of a lift station is required If the pump bearings on horizontal centrifugal
to pumps are over lubricated, the most important
A. lower temperatures to reduce proportion of effect is that the extra lubricant
hydrogen sulfide A. will result in smoother and more efficient
B. reduce chlorine demand operation of the pump
C. reduce corrosion B. will not make any difference in the operation of
D. increase DO in raw wastewater - the pump
ANSWER -C. reduce corrosion C. will be wasted
D. shaft or shaft sleeve will be damaged -
ANSWER -D. shaft or shaft sleeve will be
A wet well probe is usually used for ________ damaged
determination(s) of level.
A. approximate
B. dual point If packing is not maintained properly,
C. continuous A. cavitation damage will result
D. single point - ANSWER -D. single point B. impeller will corrode
C. loss of suction due to air being allowed to
enter pump
A pump is delivering at less than the expected D. shaft or shaft sleeve will be damaged -
, ABC Wastewater collection Level 3 Test Questions and
Answers Graded A
ANSWER -C. loss of suction due to air Generally, as an individual progresses upward in
being allowed to enter pump management, reliance on personal technical skill
A. changes to the more complex
B. decreases
In certain situations, a supervisor encourages the C. increases
employees to make their own decisions. This is D. remains the same - ANSWER -B.
considered to be decreases
A. against the rules to follow past experiences in
decision-making
B. bad form since the supervisor eventually loses Special parts that should be carried by the
control maintenance worker are usually listed in the
C. highly desirable, since it encourages A. machine blue print
employee growth and frees the B. machine history record
D. supervisor for other tasks C. machine manufacturer's manual
E. passing the buck - ANSWER -C. highly D. work order - ANSWER -C. machine
desirable, since it encourages employee growth manufacturer's manual
Successful communication requires mutual How can the supervisor be certain that scheduled
A. agreement maintenance is completed?
B. confusion A. ask the workers
C. transmission B. hire someone to inspect completed work
D. understanding - ANSWER -D. C. use a form that compares work assigned with
understanding work completed
D. wait and see if there are any failures -
ANSWER -C. use a form that compares
When a great deal of authority is delegated on work assigned with work completed
many levels, an organization may be described
as
A. authoritarian Word has just come down from the top that
B. centralized operating funds are being cut. How should this be
C. decentralized handled?
D. unstructured - ANSWER -C. A. cut the supplies and repairs in order to
decentralized balance the budget
B. fire some of the less-productive old employees
C. keep it quiet and do what you have to do--"The
Recognition and job security are indications of less said the better"
A. a good organization D. let the other personnel know what the situation
B. a good supervisor is and ask for their help - ANSWER -D. let
C. external morale factors the other personnel know what the situation is
D. internal morale factors - ANSWER -A. a and ask for their help
good organization
One opening has become available which would
