Page |1
PSE 212 Final - Practice Questions
Questions and Correct Answers/ Latest
Update / Already Graded
Relative bonded area (RBA) can be described as:
Ans: The bonded surface of the fibers divided by the total fiber
surface.
A sheet that is 100 cm^2 has a mass of 1 grams. What is the grammage
of the sheet?
Ans: 100.00
Which theory is used to calculate the breaking length of a paper sheet?
Ans: Page Equation
Increasing the amount of softwood fiber in the sheet is a good way to
increase the z-direction tensile strength (ZDT).
Ans: False
The perception of tissue softness is a purely mechanical property?
Ans: False
All rights reserved © 2025/ 2026 |
, Page |2
Light scattering is used to measure the overall density the paper sheet
and is effective in predicting the thickness of paper.
Ans: False
For the piece of equipment below, what is its name and how much pulp
is used per run?
Ans: PFI Mill and 240 Grams at 10 % consistency
When a paper sheet is wet pressed more the density increases. This
lowers the opacity of the paper sheet. Why does it lower the opacity?
Ans: The opacity decreases because air voids are removed from
the internal structure of the sheet. This reduces the number of
surfaces the light can scatter off of and thus the opacity goes
down.
A paperboard is being used to create a box. The wall of the box must
7.0 cm high, and the paperboard has a thickness of 0.28 mm and elastic
modulus of 1.7 GPa. What is the critical load in pounds that can be
applied to the wall of the paper board per inch
Ans: 0.011
All rights reserved © 2025/ 2026 |
, Page |3
To increase the tear strength, which of the following would be the best
option:
Ans: Increase softwood content, lower the amount of refining
and increase the basis weight.
Specifications are created without interactions from the outside.
Ans: False
Draw in the dryer section of the paper machine greatly influence the
directionality of paper, even more than fiber orientation.
Ans: True
There are two main drainage sections on the Fourdinier. They are
_______________ and ____________________ section.
Ans: Gravity and Vacuum
The dryline is located where?
Ans: Fourdrinier Table
Orthotropic is a term used to describe __________.
All rights reserved © 2025/ 2026 |
PSE 212 Final - Practice Questions
Questions and Correct Answers/ Latest
Update / Already Graded
Relative bonded area (RBA) can be described as:
Ans: The bonded surface of the fibers divided by the total fiber
surface.
A sheet that is 100 cm^2 has a mass of 1 grams. What is the grammage
of the sheet?
Ans: 100.00
Which theory is used to calculate the breaking length of a paper sheet?
Ans: Page Equation
Increasing the amount of softwood fiber in the sheet is a good way to
increase the z-direction tensile strength (ZDT).
Ans: False
The perception of tissue softness is a purely mechanical property?
Ans: False
All rights reserved © 2025/ 2026 |
, Page |2
Light scattering is used to measure the overall density the paper sheet
and is effective in predicting the thickness of paper.
Ans: False
For the piece of equipment below, what is its name and how much pulp
is used per run?
Ans: PFI Mill and 240 Grams at 10 % consistency
When a paper sheet is wet pressed more the density increases. This
lowers the opacity of the paper sheet. Why does it lower the opacity?
Ans: The opacity decreases because air voids are removed from
the internal structure of the sheet. This reduces the number of
surfaces the light can scatter off of and thus the opacity goes
down.
A paperboard is being used to create a box. The wall of the box must
7.0 cm high, and the paperboard has a thickness of 0.28 mm and elastic
modulus of 1.7 GPa. What is the critical load in pounds that can be
applied to the wall of the paper board per inch
Ans: 0.011
All rights reserved © 2025/ 2026 |
, Page |3
To increase the tear strength, which of the following would be the best
option:
Ans: Increase softwood content, lower the amount of refining
and increase the basis weight.
Specifications are created without interactions from the outside.
Ans: False
Draw in the dryer section of the paper machine greatly influence the
directionality of paper, even more than fiber orientation.
Ans: True
There are two main drainage sections on the Fourdinier. They are
_______________ and ____________________ section.
Ans: Gravity and Vacuum
The dryline is located where?
Ans: Fourdrinier Table
Orthotropic is a term used to describe __________.
All rights reserved © 2025/ 2026 |
