PSE 322 Quiz 6 Questions And Complete Answers
What device, of the following, is based on the venturi principle? - ANSWER Eductor
Which of the following terms involves only liquid phases, and no solids? - ANSWER
Emulsion
When canister filters are used to filter flakes and debris during metering of a chemical
additives to a papermaking system, what is the main reason why they are typically set
up in pairs of filter units in parallel? - ANSWER To allow backflushing to discard
oversized material
What kind of paper test involves comparing the strength of a wetted sheet (standard
time of immersion) to that of a dry sheet of the same paper? - ANSWER Wet strength
What example of disruptive technology change has affected the quality of hardwood
fiber available to papermakers? - ANSWER Clonal plantation eucalyptus
What type of paper product is made by very few companies and has potential to earn a
higher profit margin? - ANSWER Specialty paper product
Which term is the best description of the shape of poly(aluminum chloride) (PAC)
species in solution? - ANSWER random
At what pH, of the following, is the hydrated form of monomeric aluminum(3+) the most
prominent species in water? - ANSWER 3.5
Which acid tends to be the least expensive to use? - ANSWER Sulfuric
Vacuum is applied in which of the following unit operations? - ANSWER Deaeration
(Deculator type)
, Which of the following is a valid reason to add a chemical additive at the top of a stock
chest, e.g. a blend chest? - ANSWER Avoid adding it to fines-enriched slurry so that
more of it gets onto fiber surfaces.
Which of the following items, used for providing chemical additives for paper machines,
is a textile product? - ANSWER Supersack
What device makes sure that chemical additives are injected within the central flow of a
stock line? - ANSWER An injection quill
What type of papermaking additive is likely to make an effect that is apparent to the
customer? - ANSWER Functional additive
In which of the following ways is a typical routine test of paper at the paper mill different
from the conditions that the paper needs to fact in the real world? - ANSWER
INCORRECT It is more complicated and hard to replicate.
It is simpler and more repeatable.
Using standard terminology, what kind of innovation involves existing customers and the
costs and benefits can be estimated? - ANSWER Sustaining innovation
What kind of air gets transferred into entrained air when the pressure suddenly
becomes lower at the headbox slice? - ANSWER Dissolved
What chemical additive needs to be added earlier than the location (mechanical
deaerator or tray or white water silo) where large bubbles can be separated? - ANSWER
Defoamer
What types of acid can be used to slightly reduce the pH of calcium carbonate with less
dissolution of the mineral filler? - ANSWER Phosphoric
What device, of the following, is based on the venturi principle? - ANSWER Eductor
Which of the following terms involves only liquid phases, and no solids? - ANSWER
Emulsion
When canister filters are used to filter flakes and debris during metering of a chemical
additives to a papermaking system, what is the main reason why they are typically set
up in pairs of filter units in parallel? - ANSWER To allow backflushing to discard
oversized material
What kind of paper test involves comparing the strength of a wetted sheet (standard
time of immersion) to that of a dry sheet of the same paper? - ANSWER Wet strength
What example of disruptive technology change has affected the quality of hardwood
fiber available to papermakers? - ANSWER Clonal plantation eucalyptus
What type of paper product is made by very few companies and has potential to earn a
higher profit margin? - ANSWER Specialty paper product
Which term is the best description of the shape of poly(aluminum chloride) (PAC)
species in solution? - ANSWER random
At what pH, of the following, is the hydrated form of monomeric aluminum(3+) the most
prominent species in water? - ANSWER 3.5
Which acid tends to be the least expensive to use? - ANSWER Sulfuric
Vacuum is applied in which of the following unit operations? - ANSWER Deaeration
(Deculator type)
, Which of the following is a valid reason to add a chemical additive at the top of a stock
chest, e.g. a blend chest? - ANSWER Avoid adding it to fines-enriched slurry so that
more of it gets onto fiber surfaces.
Which of the following items, used for providing chemical additives for paper machines,
is a textile product? - ANSWER Supersack
What device makes sure that chemical additives are injected within the central flow of a
stock line? - ANSWER An injection quill
What type of papermaking additive is likely to make an effect that is apparent to the
customer? - ANSWER Functional additive
In which of the following ways is a typical routine test of paper at the paper mill different
from the conditions that the paper needs to fact in the real world? - ANSWER
INCORRECT It is more complicated and hard to replicate.
It is simpler and more repeatable.
Using standard terminology, what kind of innovation involves existing customers and the
costs and benefits can be estimated? - ANSWER Sustaining innovation
What kind of air gets transferred into entrained air when the pressure suddenly
becomes lower at the headbox slice? - ANSWER Dissolved
What chemical additive needs to be added earlier than the location (mechanical
deaerator or tray or white water silo) where large bubbles can be separated? - ANSWER
Defoamer
What types of acid can be used to slightly reduce the pH of calcium carbonate with less
dissolution of the mineral filler? - ANSWER Phosphoric
