TEXAS WASTEWATER CLASS D NEWEST
EXAM LATEST 2024/2025 WITH ACTUAL
QUESTIONS AND CORRECT VERIFIED
(DETAILED) ANSWERS/ALREADY GRADED
A
1mg/ 1 liter equals:
a. 8.34 lb/ 1,000,000 gals
b. 7.48 lb / 1000,000 gals
c. 3.14 g/ 1 gal
d. 17.1 grains/ 1 gram
a. 8.34 lb/ 1,000,000 gals
1ppm equals_______ppb
,a. 10
b. 100
c. 1,000
d. 10,000
c. 1,000
Studies have shown HIV virus can not survive in the sewer systems
a. True
b. False
b. False
Vaccinations for hepatitis B shall be made available to all exposed employees at
no-cost
a. True
b. False
a. True
The name "bar screen" or "bar rake" can be used to describe the exact same item
in a WWTF. The words are interchangeable.
,a. True
b. False
b. False
A comminuted can be used in place of a manual bar screen but not an automatic
bar screen
a. True
b. False
b. False
"Comminutors are devices that shred incoming rags and debris and leave them in
the wastewater. They are general installed in place of a bar screen."
A disadvantage of a comminutor is that the comminutor leaves shredded debris
(rags, plastic, wood, etc) in the wastewater.
a. True
b. False
a. True
, The pretreatment system is generally
a. A biological process
b. A chemical process
c. A physical process
d. A physical/chemical process
e. A biological/chemical process
f. A physical /biological process
c. A physical process
A flow channel has water flowing at 2 ft/sec. The cross section of the water
measures 1.5 ft x 3 ft.
What is the flow in cu ft/sec?
What is the flow in gallons/sec?
What is the flow in gallons/hr?
What is the flow in lines of water/day?
EXAM LATEST 2024/2025 WITH ACTUAL
QUESTIONS AND CORRECT VERIFIED
(DETAILED) ANSWERS/ALREADY GRADED
A
1mg/ 1 liter equals:
a. 8.34 lb/ 1,000,000 gals
b. 7.48 lb / 1000,000 gals
c. 3.14 g/ 1 gal
d. 17.1 grains/ 1 gram
a. 8.34 lb/ 1,000,000 gals
1ppm equals_______ppb
,a. 10
b. 100
c. 1,000
d. 10,000
c. 1,000
Studies have shown HIV virus can not survive in the sewer systems
a. True
b. False
b. False
Vaccinations for hepatitis B shall be made available to all exposed employees at
no-cost
a. True
b. False
a. True
The name "bar screen" or "bar rake" can be used to describe the exact same item
in a WWTF. The words are interchangeable.
,a. True
b. False
b. False
A comminuted can be used in place of a manual bar screen but not an automatic
bar screen
a. True
b. False
b. False
"Comminutors are devices that shred incoming rags and debris and leave them in
the wastewater. They are general installed in place of a bar screen."
A disadvantage of a comminutor is that the comminutor leaves shredded debris
(rags, plastic, wood, etc) in the wastewater.
a. True
b. False
a. True
, The pretreatment system is generally
a. A biological process
b. A chemical process
c. A physical process
d. A physical/chemical process
e. A biological/chemical process
f. A physical /biological process
c. A physical process
A flow channel has water flowing at 2 ft/sec. The cross section of the water
measures 1.5 ft x 3 ft.
What is the flow in cu ft/sec?
What is the flow in gallons/sec?
What is the flow in gallons/hr?
What is the flow in lines of water/day?
