Page 1 of 56
CWEA MECHANICAL TECHNOLOGIST II
CERTIFICATION EXAM | FREQUENTLY TESTED
QUESTIONS WITH CORRECT ANSWERS |
BRAND NEW!
What type of pump is typically used for pumping high-viscosity
materials? - ✔✔✔ Correct Answer > Positive displacement.
In some cases, fluid is ________ to lower its viscosity. - ✔✔✔ Correct
Answer > Heated.
Two problems encountered in paint pumping systems are the
settling of _________ and pigment _________. - ✔✔✔ Correct Answer >
Pigments, abrasiveness.
Systems handling greases, heavy mastics, cement, and concrete
are called what? - ✔✔✔ Correct Answer > Solids pumping systems.
Repair of solids pumping systems is made easier if cylinder
liners and other __________ components are used. - ✔✔✔ Correct
Answer > Replaceable.
,Page 2 of 56
When the eye of a pump impeller is above the level of the
pumped fluid, it is called what? - ✔✔✔ Correct Answer > Suction lift.
When a pump is not running, conditions are referred to as
___________; when a pump is running, the conditions are
___________. - ✔✔✔ Correct Answer > Static, dynamic.
With the pump shut off, the difference in elevation between the
suction and discharge liquid levels is called? - ✔✔✔ Correct Answer >
Static head or elevation head.
In most installations, the discharge pipe is ___________ than the
suction pipe. - ✔✔✔ Correct Answer > Smaller.
The sum of total static head, head loss, and velocity head is
called what? - ✔✔✔ Correct Answer > Total head.
You can calculate the theoretical flow from a pump if you know
the total head, impeller diameter, and have a what? - ✔✔✔ Correct
Answer > Pump curve.
,Page 3 of 56
Brake horsepower is greater than liquid horsepower by a factor
representing the __________ of the pump. - ✔✔✔ Correct Answer >
Efficiency.
The operation of a centrifugal pump is based on what? - ✔✔✔
Correct Answer > Centrifugal force.
The casing of a pump encloses the pump and what else? - ✔✔✔
Correct Answer > Impeller and stuffing box.
Which part of a centrifugal pump supplies energy to the fluid? -
✔✔✔ Correct Answer > Impeller.
In this type of pump, fluid is drawn in on both sides of the
impeller and passes out through a single discharge outlet. - ✔✔✔
Correct Answer > Double suction.
Does the additional impeller in a multi-stage pump increase the
volume output of the pump? - ✔✔✔ Correct Answer > No, the additional
impeller does not.
End-suction pumps are always easy to recognize because their
___________ are 90 degrees to each other. - ✔✔✔ Correct Answer >
Suction and discharge ports.
, Page 4 of 56
In this type of pump, the pump shaft is coupled to the motor
shaft. - ✔✔✔ Correct Answer > Frame-mounted.
In this type of pump, the impeller is mounted directly on the
motor shaft. - ✔✔✔ Correct Answer > Close-coupled.
The main advantage of a split case design is that there is no need
to disconnect the ___________ to gain access to the pump
components. - ✔✔✔ Correct Answer > Piping.
A double volute casing adds what to the fluid passage? - ✔✔✔
Correct Answer > Guiding vane.
The impeller does not cup the fluid it is pumping, but slides
through and _________ it. - ✔✔✔ Correct Answer > Throws.
What type of impeller is most efficient in energy transfer? - ✔✔✔
Correct Answer > Closed impeller.
Which impeller imparts a higher velocity to the pumped fluid,
curved or straight vane? - ✔✔✔ Correct Answer > Curved vane.
CWEA MECHANICAL TECHNOLOGIST II
CERTIFICATION EXAM | FREQUENTLY TESTED
QUESTIONS WITH CORRECT ANSWERS |
BRAND NEW!
What type of pump is typically used for pumping high-viscosity
materials? - ✔✔✔ Correct Answer > Positive displacement.
In some cases, fluid is ________ to lower its viscosity. - ✔✔✔ Correct
Answer > Heated.
Two problems encountered in paint pumping systems are the
settling of _________ and pigment _________. - ✔✔✔ Correct Answer >
Pigments, abrasiveness.
Systems handling greases, heavy mastics, cement, and concrete
are called what? - ✔✔✔ Correct Answer > Solids pumping systems.
Repair of solids pumping systems is made easier if cylinder
liners and other __________ components are used. - ✔✔✔ Correct
Answer > Replaceable.
,Page 2 of 56
When the eye of a pump impeller is above the level of the
pumped fluid, it is called what? - ✔✔✔ Correct Answer > Suction lift.
When a pump is not running, conditions are referred to as
___________; when a pump is running, the conditions are
___________. - ✔✔✔ Correct Answer > Static, dynamic.
With the pump shut off, the difference in elevation between the
suction and discharge liquid levels is called? - ✔✔✔ Correct Answer >
Static head or elevation head.
In most installations, the discharge pipe is ___________ than the
suction pipe. - ✔✔✔ Correct Answer > Smaller.
The sum of total static head, head loss, and velocity head is
called what? - ✔✔✔ Correct Answer > Total head.
You can calculate the theoretical flow from a pump if you know
the total head, impeller diameter, and have a what? - ✔✔✔ Correct
Answer > Pump curve.
,Page 3 of 56
Brake horsepower is greater than liquid horsepower by a factor
representing the __________ of the pump. - ✔✔✔ Correct Answer >
Efficiency.
The operation of a centrifugal pump is based on what? - ✔✔✔
Correct Answer > Centrifugal force.
The casing of a pump encloses the pump and what else? - ✔✔✔
Correct Answer > Impeller and stuffing box.
Which part of a centrifugal pump supplies energy to the fluid? -
✔✔✔ Correct Answer > Impeller.
In this type of pump, fluid is drawn in on both sides of the
impeller and passes out through a single discharge outlet. - ✔✔✔
Correct Answer > Double suction.
Does the additional impeller in a multi-stage pump increase the
volume output of the pump? - ✔✔✔ Correct Answer > No, the additional
impeller does not.
End-suction pumps are always easy to recognize because their
___________ are 90 degrees to each other. - ✔✔✔ Correct Answer >
Suction and discharge ports.
, Page 4 of 56
In this type of pump, the pump shaft is coupled to the motor
shaft. - ✔✔✔ Correct Answer > Frame-mounted.
In this type of pump, the impeller is mounted directly on the
motor shaft. - ✔✔✔ Correct Answer > Close-coupled.
The main advantage of a split case design is that there is no need
to disconnect the ___________ to gain access to the pump
components. - ✔✔✔ Correct Answer > Piping.
A double volute casing adds what to the fluid passage? - ✔✔✔
Correct Answer > Guiding vane.
The impeller does not cup the fluid it is pumping, but slides
through and _________ it. - ✔✔✔ Correct Answer > Throws.
What type of impeller is most efficient in energy transfer? - ✔✔✔
Correct Answer > Closed impeller.
Which impeller imparts a higher velocity to the pumped fluid,
curved or straight vane? - ✔✔✔ Correct Answer > Curved vane.
