CWEA ELECTRICAL AND INSTRUMENT
GRADE 2 ACTUAL EXAM PAPER 2026
COMPLETE QUESTIONS AND SOLUTIONS
CERTIFICATION READY
◉ Infiltration can be caused by cracked pipes, true or false?
Answer: True
◉ The main reason for adding sodium hypochlorite to sewers is to
control:
Answer: Odor
◉ Roots can enter collection systems through pipe cracks, true or
false?
Answer: True
◉ The lowest point on the inside of a pipeline is called the:
Answer: Invert
◉ How often must an excavation site and adjacent areas be
inspected for hazardous conditions?
, Answer: Daily
◉ Working in an un-sloped trench with no shoring is one option of
Protective Shoring Systems, true or false?
Answer: False. Some options are proper stopping or benching of the
sides of the excavation, supporting the sides of a trench with
shoring, and using a shield in the excavation area.
◉ Proper operation and maintenance of wastewater collection is
keeping wastewater flowing through pipes, true or false?
Answer: True
◉ Minimum design velocity for a sewer should greater than:
Answer: 2 feet per second
◉ Vitrified Clay pipe is a Rigid type of pipe, true or false?
Answer: True
◉ Barrels, lids, cones, and backflow devices are all included in
Manholes, true or false?
Answer: False. All are included except for backflow devices.
GRADE 2 ACTUAL EXAM PAPER 2026
COMPLETE QUESTIONS AND SOLUTIONS
CERTIFICATION READY
◉ Infiltration can be caused by cracked pipes, true or false?
Answer: True
◉ The main reason for adding sodium hypochlorite to sewers is to
control:
Answer: Odor
◉ Roots can enter collection systems through pipe cracks, true or
false?
Answer: True
◉ The lowest point on the inside of a pipeline is called the:
Answer: Invert
◉ How often must an excavation site and adjacent areas be
inspected for hazardous conditions?
, Answer: Daily
◉ Working in an un-sloped trench with no shoring is one option of
Protective Shoring Systems, true or false?
Answer: False. Some options are proper stopping or benching of the
sides of the excavation, supporting the sides of a trench with
shoring, and using a shield in the excavation area.
◉ Proper operation and maintenance of wastewater collection is
keeping wastewater flowing through pipes, true or false?
Answer: True
◉ Minimum design velocity for a sewer should greater than:
Answer: 2 feet per second
◉ Vitrified Clay pipe is a Rigid type of pipe, true or false?
Answer: True
◉ Barrels, lids, cones, and backflow devices are all included in
Manholes, true or false?
Answer: False. All are included except for backflow devices.
