PSE 322 (Midterm-Final) Exam With
Complete Solutions
Using standard terminology, what kind of innovation involves existing customers and the
costs and benefits can be estimated? - ANSWER Sustaining Innovation
What type of paper product is made by very few companies and has potential to earn a
higher profit margin? - ANSWER Specialty Paper Product
When calibrating the flow rate from an additive supply tank to a paper machine system,
in addition to the installed equipment, what other device is needed? - ANSWER
Stopwatch
What type of expense is likely before bulk delivery of a papermaking additive can be
initiated at a facility for the first time?
a. Guarantee (return penalty)
b. Down payment (to demonstrate seriousness)
c. Capital (tank, agitator, metering)
d. Insurance (regarding efficacy of the additive) - ANSWER Capital
Why do papermakers using old paper machine systems often add chemicals before
bends in stock lines? - ANSWER c. Plug flow gets disturbed at the bends, causing
mixing. Correct.
Which of the following terms involves only liquid phases, and no solids?
Select one:
a. Dispersion
b. Emulsion
c. Suspension
d. Conversion - ANSWER Emulsion
What device makes sure that chemical additives are injected within the central flow of a
stock line?
a. An injection quill
b. An impeller
,c. A ring header
d. A flange connection - ANSWER Injection Quill
Why do operators of paper machine have a preference for wet-strength grades of paper
products that are easily repulped?
a. They want to sell their wet-strength paper as a pulp product to other paper
manufacturers.
b. A higher price can be placed on such a product.
c. Off-specification paper (dry-end broke) is more easily processed.
d. Such paper responds better to surface sizing with a solution of starch. - ANSWER
Off-spec paper is more easily processed
What example of disruptive technology change has affected the quality of hardwood
fiber available to papermakers?
Select one:
a. Aspen clearcutting and natural reforestation
b. Maple-cottonwood mixed harvesting
c. Clonal plantation eucalyptus
d. Alpine birch selective harvesting - ANSWER Clonal plantation eucalyptus
What will happen to the price of a paper product if new capacity is added by paper
machine construction or rebuilding or reassignment of an existing paper machine to the
paper grade of interest? - ANSWER Price Erosion
In what two ways does real paper show deviations from the Lucas-Washburn equation
when it is exposed to water?
Select one:
a. Wetting delay and filling of surface roughness `
b. Theory, and water present on dry paper
c. Linear effect of time and proportionality with radius
d. The curling up of real paper and the loss of contact of the headbox on the device -
ANSWER Wetting delay and filling of surface roughness
An ultrasonic signal transmission through water can be used to determine what
property of paper? - ANSWER Rapid penetration of paper by water
What is the shape of a unit of poly-aluminum chloride (PAC)?
,Select one:
a. Compact `
b. Linear
c. Network-like
d. Spiral - ANSWER Compact
What group present on rosin (including fortified rosin) can interact with aluminum
species at the paper surface?
a. Phenolic -OH group
b. Carboxylic acid
c. Aromatic group (pi electrons)
d. Hydroxyl group - ANSWER Carboxylic acid
What type of feature in a continuous process can be expected to cause process control
delays in which the outgoing concentration responds to changed input rapidly (possibly
after a short delay) and then asymptotically?
Select one:
a. Plug flow in an unstirred tank
b. A continuously stirred tank reactor (CSTR)
c. Turbulent flow through a small pipe
d. Flow through a large pipe (Poiseuille flow) - ANSWER CSTR
Which of the following investments, all involving a cost of $10,000, is likely to get the
fastest approval from management?
Select one:
a. Internal rate of return 7.5%
b. Payback period 56 days
c. Net present value $10,100
d. Payback period 7.5 years - ANSWER Payback period of 56 days
Which of the following usually involves the lowest cost per unit mass of delivered
material?
Select one:
, a. Nonreturnable drum
b. Bulk
c. Returnable container
d. Tote bin - ANSWER Bulk
What type of additive is an anionic retention aid?
Select one:
a. Operational additive
b. Process additive
c. Strength additive
d. Functional additive - ANSWER Process additive
What is a typical product cycle of a successful disruptive innovation?
Select one:
a. Innovation, ripening, thriving, souring, dissipation
b. Unmet need, partly met need, met need, stagnation
c. Innovation, early adopters, early majority, late majority, laggards
d. Market saturation, marked segregation, market differentiation - ANSWER Innovation,
early adopters, early majority, late majority, laggards
What factor makes paper break down more rapidly during storage in a library?
Select one:
a. Hydrophobicity due to the presence of rosin
b. Enzymatic decay due to the presence of water
c. Acidity due to the presence of alum
d. Rigidity (brittle nature) due to the presence of starch - ANSWER Acidity due to
presence of alum
What detection system is used for the Hercules Size Test (HST), in which one measures
the penetration time of a green aqueous fluid?
Complete Solutions
Using standard terminology, what kind of innovation involves existing customers and the
costs and benefits can be estimated? - ANSWER Sustaining Innovation
What type of paper product is made by very few companies and has potential to earn a
higher profit margin? - ANSWER Specialty Paper Product
When calibrating the flow rate from an additive supply tank to a paper machine system,
in addition to the installed equipment, what other device is needed? - ANSWER
Stopwatch
What type of expense is likely before bulk delivery of a papermaking additive can be
initiated at a facility for the first time?
a. Guarantee (return penalty)
b. Down payment (to demonstrate seriousness)
c. Capital (tank, agitator, metering)
d. Insurance (regarding efficacy of the additive) - ANSWER Capital
Why do papermakers using old paper machine systems often add chemicals before
bends in stock lines? - ANSWER c. Plug flow gets disturbed at the bends, causing
mixing. Correct.
Which of the following terms involves only liquid phases, and no solids?
Select one:
a. Dispersion
b. Emulsion
c. Suspension
d. Conversion - ANSWER Emulsion
What device makes sure that chemical additives are injected within the central flow of a
stock line?
a. An injection quill
b. An impeller
,c. A ring header
d. A flange connection - ANSWER Injection Quill
Why do operators of paper machine have a preference for wet-strength grades of paper
products that are easily repulped?
a. They want to sell their wet-strength paper as a pulp product to other paper
manufacturers.
b. A higher price can be placed on such a product.
c. Off-specification paper (dry-end broke) is more easily processed.
d. Such paper responds better to surface sizing with a solution of starch. - ANSWER
Off-spec paper is more easily processed
What example of disruptive technology change has affected the quality of hardwood
fiber available to papermakers?
Select one:
a. Aspen clearcutting and natural reforestation
b. Maple-cottonwood mixed harvesting
c. Clonal plantation eucalyptus
d. Alpine birch selective harvesting - ANSWER Clonal plantation eucalyptus
What will happen to the price of a paper product if new capacity is added by paper
machine construction or rebuilding or reassignment of an existing paper machine to the
paper grade of interest? - ANSWER Price Erosion
In what two ways does real paper show deviations from the Lucas-Washburn equation
when it is exposed to water?
Select one:
a. Wetting delay and filling of surface roughness `
b. Theory, and water present on dry paper
c. Linear effect of time and proportionality with radius
d. The curling up of real paper and the loss of contact of the headbox on the device -
ANSWER Wetting delay and filling of surface roughness
An ultrasonic signal transmission through water can be used to determine what
property of paper? - ANSWER Rapid penetration of paper by water
What is the shape of a unit of poly-aluminum chloride (PAC)?
,Select one:
a. Compact `
b. Linear
c. Network-like
d. Spiral - ANSWER Compact
What group present on rosin (including fortified rosin) can interact with aluminum
species at the paper surface?
a. Phenolic -OH group
b. Carboxylic acid
c. Aromatic group (pi electrons)
d. Hydroxyl group - ANSWER Carboxylic acid
What type of feature in a continuous process can be expected to cause process control
delays in which the outgoing concentration responds to changed input rapidly (possibly
after a short delay) and then asymptotically?
Select one:
a. Plug flow in an unstirred tank
b. A continuously stirred tank reactor (CSTR)
c. Turbulent flow through a small pipe
d. Flow through a large pipe (Poiseuille flow) - ANSWER CSTR
Which of the following investments, all involving a cost of $10,000, is likely to get the
fastest approval from management?
Select one:
a. Internal rate of return 7.5%
b. Payback period 56 days
c. Net present value $10,100
d. Payback period 7.5 years - ANSWER Payback period of 56 days
Which of the following usually involves the lowest cost per unit mass of delivered
material?
Select one:
, a. Nonreturnable drum
b. Bulk
c. Returnable container
d. Tote bin - ANSWER Bulk
What type of additive is an anionic retention aid?
Select one:
a. Operational additive
b. Process additive
c. Strength additive
d. Functional additive - ANSWER Process additive
What is a typical product cycle of a successful disruptive innovation?
Select one:
a. Innovation, ripening, thriving, souring, dissipation
b. Unmet need, partly met need, met need, stagnation
c. Innovation, early adopters, early majority, late majority, laggards
d. Market saturation, marked segregation, market differentiation - ANSWER Innovation,
early adopters, early majority, late majority, laggards
What factor makes paper break down more rapidly during storage in a library?
Select one:
a. Hydrophobicity due to the presence of rosin
b. Enzymatic decay due to the presence of water
c. Acidity due to the presence of alum
d. Rigidity (brittle nature) due to the presence of starch - ANSWER Acidity due to
presence of alum
What detection system is used for the Hercules Size Test (HST), in which one measures
the penetration time of a green aqueous fluid?
