Delaware Wastewater Operator Class II Exam ACTUAL
VERIFIED EXAM COMPLETE QUESTIONS AND
CORRECT ANSWERS LATEST UPDATE!!!.pdf
typical components of grit removal systems include:
a. belt presses
b. comminutors
C chain and flights scrapers
D Bar racks - Answer-C. chain and flight scrapers
the components of a great removal system will depend on
the type used at your facility. The components of the
commonly used equipment include chain and slight
scrapers bucket elevators grip screws air compressors
and pumps / Airlift.
common settling times in primary clarifiers - Answer-2-3
hours
what could be the problem when a centrifugal pump is not
delivering sufficient capacity? - Answer-the suction line
has been set up incorrectly
,1|Page
what is the reason that would cause a pump to not deliver
liquid at all? - Answer-pump is not primed or has lostvots
prime
during morning checks you notice taht the bearings in the
pump are running hot. what can cause this? - Answer-the
bearings are over lubricated
over time you have noticed that the packing in a pump
requires frequent replacement. what can be the cause? -
Answer-there is insufficient seal
Operator checks state that the pump at the highlift building
is excessively leaking out of the stuffing box. What could
be the source of the problem? - Answer-Stuffing box is
improperly packed
You have noticed the following when a centrifugal pump is
operating: vibration, heat, excessive noise and no flow.
What could be causing these conditions? - Answer-The
pump is cavitating
, 2|Page
Under the Environmental Protection Act (EPA), to whom is
notification of a spill required? - Answer-Ministry of the
Environment
The activated sludge process is an
_____________________ process. - Answer-Aerobic
What are the two commonly used seals in centrifugal
pumps? - Answer-Packing and mechanical seals
Select the most popular level control system used in
pumping stations. - Answer-Ultrasonic transducers
Which of the following best describes the maintenance of
a stabilization lagoon? - Answer-Removing cattails and
weed from the lagoon
In order to prevent the bacteria in the secondary treatment
stage from dying off, an ample supply of
______________________ must be supplied
continuously. - Answer-Food and oxygen
VERIFIED EXAM COMPLETE QUESTIONS AND
CORRECT ANSWERS LATEST UPDATE!!!.pdf
typical components of grit removal systems include:
a. belt presses
b. comminutors
C chain and flights scrapers
D Bar racks - Answer-C. chain and flight scrapers
the components of a great removal system will depend on
the type used at your facility. The components of the
commonly used equipment include chain and slight
scrapers bucket elevators grip screws air compressors
and pumps / Airlift.
common settling times in primary clarifiers - Answer-2-3
hours
what could be the problem when a centrifugal pump is not
delivering sufficient capacity? - Answer-the suction line
has been set up incorrectly
,1|Page
what is the reason that would cause a pump to not deliver
liquid at all? - Answer-pump is not primed or has lostvots
prime
during morning checks you notice taht the bearings in the
pump are running hot. what can cause this? - Answer-the
bearings are over lubricated
over time you have noticed that the packing in a pump
requires frequent replacement. what can be the cause? -
Answer-there is insufficient seal
Operator checks state that the pump at the highlift building
is excessively leaking out of the stuffing box. What could
be the source of the problem? - Answer-Stuffing box is
improperly packed
You have noticed the following when a centrifugal pump is
operating: vibration, heat, excessive noise and no flow.
What could be causing these conditions? - Answer-The
pump is cavitating
, 2|Page
Under the Environmental Protection Act (EPA), to whom is
notification of a spill required? - Answer-Ministry of the
Environment
The activated sludge process is an
_____________________ process. - Answer-Aerobic
What are the two commonly used seals in centrifugal
pumps? - Answer-Packing and mechanical seals
Select the most popular level control system used in
pumping stations. - Answer-Ultrasonic transducers
Which of the following best describes the maintenance of
a stabilization lagoon? - Answer-Removing cattails and
weed from the lagoon
In order to prevent the bacteria in the secondary treatment
stage from dying off, an ample supply of
______________________ must be supplied
continuously. - Answer-Food and oxygen
