CWEA COLLECTIONS SYSTEM
MAINTENANCE GRADE 3 EXAMINATION
TEST 2026 COMPLETE 82 QUESTIONS AND
SOLUTIONS GRADED A+
⩥ A kilowatt is the equivalent of:
a. 0.67 amperes at a voltage of 120.
b. 1.34 horsepower.
c. 746 watts.
d. 1,000 megacycles. Answer: b. 1.34 horsepower.
⩥ What factors should be considered when providing trench shoring?
a. Grade of sewer.
b. Pipe material.
c. Structures or sources of vibration near trenches.
d. Cost of shoring. Answer: c. Structures or sources of vibration near
trenches.
⩥ When sewer line grades are too flat, an odor problem is likely to
result. The most likely cause of the odor problem is decreased velocity
which:
a. allows decomposable solids to settle.
, b. decreases the treatment time in the lines.
c. increases the treatment time of inorganic solids.
d. allow decomposable solids to be suspended. Answer: a. allows
decomposable solids to settle.
⩥ After a collection system problem has been solved, you should:
a. wait until next week to fill out the report forms.
b. take a break.
c. go home.
d. evaluate the effectiveness of the results. Answer: d. evaluate the
effectiveness of the results.
⩥ Improper connections can be detected through:
a. DO tests.
b. soundings.
c. TV inspection.
d. radar. Answer: c. TV inspection.
⩥ Which of these pH readings indicates an acidic wastewater?
a. 3
b. 12
c. 7
MAINTENANCE GRADE 3 EXAMINATION
TEST 2026 COMPLETE 82 QUESTIONS AND
SOLUTIONS GRADED A+
⩥ A kilowatt is the equivalent of:
a. 0.67 amperes at a voltage of 120.
b. 1.34 horsepower.
c. 746 watts.
d. 1,000 megacycles. Answer: b. 1.34 horsepower.
⩥ What factors should be considered when providing trench shoring?
a. Grade of sewer.
b. Pipe material.
c. Structures or sources of vibration near trenches.
d. Cost of shoring. Answer: c. Structures or sources of vibration near
trenches.
⩥ When sewer line grades are too flat, an odor problem is likely to
result. The most likely cause of the odor problem is decreased velocity
which:
a. allows decomposable solids to settle.
, b. decreases the treatment time in the lines.
c. increases the treatment time of inorganic solids.
d. allow decomposable solids to be suspended. Answer: a. allows
decomposable solids to settle.
⩥ After a collection system problem has been solved, you should:
a. wait until next week to fill out the report forms.
b. take a break.
c. go home.
d. evaluate the effectiveness of the results. Answer: d. evaluate the
effectiveness of the results.
⩥ Improper connections can be detected through:
a. DO tests.
b. soundings.
c. TV inspection.
d. radar. Answer: c. TV inspection.
⩥ Which of these pH readings indicates an acidic wastewater?
a. 3
b. 12
c. 7
