1|Page
CWEA Wastewater Operations Manager Certification
Exam Practice Questions And Correct
Answers||Verified Exam!!|| (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download Pdf
What is the function of the bubble control on a pump wet
well? - Answer-Sense liquid depth and regulate pump
operation
Troubleshoot: Power on, Breaker on, In head, Motor not
running, Power light off: - Answer-Fuse Blow
Partiaclly closing the discharge on a 3 phase, induction
motor driven, centrifugal pump would cause? - Answer-
Less AMP draw
Which would not cause failure to start in an electric motor?
- Answer-Pump not hooked to motor
A major cause of pump and motor shaft coupling wear is?
- Answer-Misalignment between pump and motor flanges
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A lantern ring is? - Answer-A spacer ring in pump packing
for seal water
Wear rings are installed in a pump to? - Answer-
Concentrate wear on an economically replacable part
Which pump operates on the basis of inertia or mass
moving in a circular motion? - Answer-Centrifugal
Which pump works on the principle of overall specific
weight of a confined column of a gas-water mix? - Answer-
Air lift
Mechanical seals are installed in pumps because? -
Answer-Packing requires an undesirable leakage
A pump is delivering less than proper rate of discharge.
Which would cause this? - Answer-Discharge head too low
Which is affected by the loss of seal, water pumps? -
Answer-Process pumps with water seals
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Double suction centrifugal pumps have intake and
discharge ports located on a plane ________ the
centerline. - Answer-Below
The discharge of a centrifugal pump______ - Answer-
Decreases with increase in head
Centrigual pumps are classified according to the______ -
Answer-Direction of flow through the impeller
Leakage from a packing gland should be
approximately_____ - Answer-One drop per second
A worn centrifugal pump impeller uses ______ the energy
of a similar pump with a new impeller. - Answer-More than
An oporator finds a centrifugal pump discharging at a
reduced rate. What should be checked? - Answer-Impeller,
for clog or wear
A centrifugal pump is not delivering water. What is the
probable cause? - Answer-Air leak onto the pump through
stuffing box
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Which type of pump is referred to as a reciprocating
positive displacement pump? - Answer-Piston
A new gas powered diaphram type pump is being used for
dewatering a ditch, should be limited to what height above
water in the ditch? - Answer-20 to 25 ft - approaching
barometric pressure
A postive displacement should never be palced into
operation____ - Answer-With the discharge valve closed
A pneumatic ejector lifts wastewater. The device used to
acheive this is... - Answer-an air compressor
Pneumatic pumps are not recommended when flow
exceeds... - Answer-100 gpm
A pheumatic ejector uses_____ to move sewage -
Answer-compressed air
CWEA Wastewater Operations Manager Certification
Exam Practice Questions And Correct
Answers||Verified Exam!!|| (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download Pdf
What is the function of the bubble control on a pump wet
well? - Answer-Sense liquid depth and regulate pump
operation
Troubleshoot: Power on, Breaker on, In head, Motor not
running, Power light off: - Answer-Fuse Blow
Partiaclly closing the discharge on a 3 phase, induction
motor driven, centrifugal pump would cause? - Answer-
Less AMP draw
Which would not cause failure to start in an electric motor?
- Answer-Pump not hooked to motor
A major cause of pump and motor shaft coupling wear is?
- Answer-Misalignment between pump and motor flanges
,2|Page
A lantern ring is? - Answer-A spacer ring in pump packing
for seal water
Wear rings are installed in a pump to? - Answer-
Concentrate wear on an economically replacable part
Which pump operates on the basis of inertia or mass
moving in a circular motion? - Answer-Centrifugal
Which pump works on the principle of overall specific
weight of a confined column of a gas-water mix? - Answer-
Air lift
Mechanical seals are installed in pumps because? -
Answer-Packing requires an undesirable leakage
A pump is delivering less than proper rate of discharge.
Which would cause this? - Answer-Discharge head too low
Which is affected by the loss of seal, water pumps? -
Answer-Process pumps with water seals
,3|Page
Double suction centrifugal pumps have intake and
discharge ports located on a plane ________ the
centerline. - Answer-Below
The discharge of a centrifugal pump______ - Answer-
Decreases with increase in head
Centrigual pumps are classified according to the______ -
Answer-Direction of flow through the impeller
Leakage from a packing gland should be
approximately_____ - Answer-One drop per second
A worn centrifugal pump impeller uses ______ the energy
of a similar pump with a new impeller. - Answer-More than
An oporator finds a centrifugal pump discharging at a
reduced rate. What should be checked? - Answer-Impeller,
for clog or wear
A centrifugal pump is not delivering water. What is the
probable cause? - Answer-Air leak onto the pump through
stuffing box
, 4|Page
Which type of pump is referred to as a reciprocating
positive displacement pump? - Answer-Piston
A new gas powered diaphram type pump is being used for
dewatering a ditch, should be limited to what height above
water in the ditch? - Answer-20 to 25 ft - approaching
barometric pressure
A postive displacement should never be palced into
operation____ - Answer-With the discharge valve closed
A pneumatic ejector lifts wastewater. The device used to
acheive this is... - Answer-an air compressor
Pneumatic pumps are not recommended when flow
exceeds... - Answer-100 gpm
A pheumatic ejector uses_____ to move sewage -
Answer-compressed air
