CWEA Practice Test Questions With Correct Solutions | 2026
Update
1. Which welding process is most commonly used OxyAcetylene gas welding
for SMALL pipe maintenance welding?
2. What is the proper definition of an engine? It is a machine designed to convert
energy into useful mechanical mo-
tion
3. What is wet stacking and how can it be prevent- It is unburned fuel collecting in the
ed? exhaust due to light or no load con-
ditions
4. To check flywheel face runout, where should the The base on the bell housing and
dial indicator be positioned? pointer on the flywheel face
5. If a 38-tooth gear running at 360 rmp is driving 95
another gear at 144 rmp what is the number of
teeth on the driven gear?
6. Which of the following is required for a sealed It does not need to be lubricated
ball bearing? under normal use
7. A DAFT is an acronym meaning: Dissolved Air Flotation Thickener
8. What is the governing agency that permits odor AQMD
control systems?
9. At what pressure rating would you use a blower 7 psi
instead of a fan?
10. Which of the following valves is unsuitable for A needle valve
high-pressure flow?
11. A sodium hypochlorite tank's full working capac- 14,900 gal.
ity is 23,000 gallons. Its current level is at 1,200
1/7
, CWEA Practice Test Questions With Correct Solutions | 2026
Update
gallons. How many gallons does the delivery dri-
ver need to add to bring it to 70% capacity?
12. What is the result if 6/8 " is converted to decimal .75
form?
13. What is the conversion of 100° Celsius into 212°
Fahrenheit?
14. If 17.32 v are applied across a resistance of 50 6.0 watts
ohms, how much power is extended in the resis-
tor?
15. A standard steel plate is 4' wide, 8' long, and 1' 1,306.6 lbs
thick. If steel weighs 490 lbs/ft^3, what is the
total weight of this plate?
16. What is the volume in cubic feet of carbon media 11,781 ft^3
that is 6' thick in clarifier that has 50' diameter
and is 20' deep? Round answer to the nearest
cubic foot.
17. A 150-watt, 120-volt lamp burns constantly for 8 1,200 watts/hours
hours at a rated voltage. What is the energy used
in watts/hours?
18. Which of the following is 12/16 of one inch equal 3/4 inch
to?
19. The property if an electrical circuit restricts the resistance
flow of current and:
20. Which of the following can burn the insulation of The connections are loose or have
the supply connections at the motor starter? poor contacts
2/7
Update
1. Which welding process is most commonly used OxyAcetylene gas welding
for SMALL pipe maintenance welding?
2. What is the proper definition of an engine? It is a machine designed to convert
energy into useful mechanical mo-
tion
3. What is wet stacking and how can it be prevent- It is unburned fuel collecting in the
ed? exhaust due to light or no load con-
ditions
4. To check flywheel face runout, where should the The base on the bell housing and
dial indicator be positioned? pointer on the flywheel face
5. If a 38-tooth gear running at 360 rmp is driving 95
another gear at 144 rmp what is the number of
teeth on the driven gear?
6. Which of the following is required for a sealed It does not need to be lubricated
ball bearing? under normal use
7. A DAFT is an acronym meaning: Dissolved Air Flotation Thickener
8. What is the governing agency that permits odor AQMD
control systems?
9. At what pressure rating would you use a blower 7 psi
instead of a fan?
10. Which of the following valves is unsuitable for A needle valve
high-pressure flow?
11. A sodium hypochlorite tank's full working capac- 14,900 gal.
ity is 23,000 gallons. Its current level is at 1,200
1/7
, CWEA Practice Test Questions With Correct Solutions | 2026
Update
gallons. How many gallons does the delivery dri-
ver need to add to bring it to 70% capacity?
12. What is the result if 6/8 " is converted to decimal .75
form?
13. What is the conversion of 100° Celsius into 212°
Fahrenheit?
14. If 17.32 v are applied across a resistance of 50 6.0 watts
ohms, how much power is extended in the resis-
tor?
15. A standard steel plate is 4' wide, 8' long, and 1' 1,306.6 lbs
thick. If steel weighs 490 lbs/ft^3, what is the
total weight of this plate?
16. What is the volume in cubic feet of carbon media 11,781 ft^3
that is 6' thick in clarifier that has 50' diameter
and is 20' deep? Round answer to the nearest
cubic foot.
17. A 150-watt, 120-volt lamp burns constantly for 8 1,200 watts/hours
hours at a rated voltage. What is the energy used
in watts/hours?
18. Which of the following is 12/16 of one inch equal 3/4 inch
to?
19. The property if an electrical circuit restricts the resistance
flow of current and:
20. Which of the following can burn the insulation of The connections are loose or have
the supply connections at the motor starter? poor contacts
2/7
