PSE 212 Final Exam with all Correct & 100% Verified
Answers |Actual Complete Update |Already Graded A+
T/F: When water vapor passes through a sheet of paper, it only travels in the pore spaces.
✔Correct Answer-false
T/F: The standard deviation can be calculated by taking the square root of the variance
✔Correct Answer-true
The term "hysteresis" when used in the context of water and paper can best be described as
✔Correct Answer-The characteristic of a paper sheet where the moisture content at a given
humidity will be different depending on the prior moisture history of the sample
T/F: Two signals can be fully resolved from each other when their averages are separated by 1.5
standard deviations ✔Correct Answer-false
T/F: The main way to improve the z-direction tensile strength is to add softwood fiber
✔Correct Answer-false
T/F: Brightness is measured at 457 nm wavelength of light ✔Correct Answer-true
T/F: On the Hunter Lab scale, the "a" axis describes the blue/yellow value of a shade
✔Correct Answer-false
You are getting ready to make a presentation to a group of co-workers. It is important to report
your findings in an accurate manner. You measured the water absorption of 10 different
samples and got a result of 12.3 g/g for water uptake. The Sample standard deviation is 4.2 g/g.
Determine the value for the blank below at a 90 % Confidence interval. ✔Correct Answer-12.3
+/- 2.44
T/F: A highly refined softwood had a fold endurance of 25 double folds ✔Correct Answer-false
The value of the Student's T-distribution when compared to the normal distribution is:
✔Correct Answer-The Student's T-Distribution allows you to make estimate of confidence when
you do not know the actual standard deviation of the population
Orthotropic is a term used to describe __________ ✔Correct Answer-the directional
properties of paper
The load applied to a material divided by the cross sectional area is known as the __________
✔Correct Answer-stress
, This theory is not related to the tensile properties of paper ✔Correct Answer-Kubelka-Munk
Theory
T/F: Hercules size test is used the characterize the amount of water taken up by a paper sheet in
a defined amount of time ✔Correct Answer-false
The breaking length of paper describes _______________ ✔Correct Answer-the length of
paper required to break the sheet if the paper is held at one end
What molecular is cellulose made of? ✔Correct Answer-glucose
As beating continues, the freeness ________ ✔Correct Answer-goes down
A paper sheet has increase tensile strength and decreased basis weight. What should you do to
get the properties back in specification? ✔Correct Answer-Decrease refining and increase
basis weight
What is largest types of paper produced, by weight? ✔Correct Answer-packaging grades
Which of the following is an example of a TCF bleaching sequence? ✔Correct Answer-O-Z-E-P
Shives in brownstock are mostly removed in the _______ process ✔Correct Answer-screening
What type of additive is used to improve sheet smoothness and opacity? ✔Correct Answer-
fillers
Cellulose is a polymer made up of what sugar? ✔Correct Answer-glucose
What are the two broad categories of paper machines? ✔Correct Answer-fourdrinier and
twin-wire
A paper sheet has a density of 620 kg/m^3 and a basis weight of 85 g/m^2. What is the
thickness of the sheet? ✔Correct Answer-0.137 mm
T/F: Tear strength measures the amount of energy to tear through a paper sheet even though
the units on test are "force" units ✔Correct Answer-true
Tensile Energy Absorption (TEA) can be described as ✔Correct Answer-There area under the
force/displacement of a tensile test for paper
Which of the following test are test methods used to measure the Z-Direction properties of
paper? ✔Correct Answer-Scott Bond, Wax Pick, ZDT
Answers |Actual Complete Update |Already Graded A+
T/F: When water vapor passes through a sheet of paper, it only travels in the pore spaces.
✔Correct Answer-false
T/F: The standard deviation can be calculated by taking the square root of the variance
✔Correct Answer-true
The term "hysteresis" when used in the context of water and paper can best be described as
✔Correct Answer-The characteristic of a paper sheet where the moisture content at a given
humidity will be different depending on the prior moisture history of the sample
T/F: Two signals can be fully resolved from each other when their averages are separated by 1.5
standard deviations ✔Correct Answer-false
T/F: The main way to improve the z-direction tensile strength is to add softwood fiber
✔Correct Answer-false
T/F: Brightness is measured at 457 nm wavelength of light ✔Correct Answer-true
T/F: On the Hunter Lab scale, the "a" axis describes the blue/yellow value of a shade
✔Correct Answer-false
You are getting ready to make a presentation to a group of co-workers. It is important to report
your findings in an accurate manner. You measured the water absorption of 10 different
samples and got a result of 12.3 g/g for water uptake. The Sample standard deviation is 4.2 g/g.
Determine the value for the blank below at a 90 % Confidence interval. ✔Correct Answer-12.3
+/- 2.44
T/F: A highly refined softwood had a fold endurance of 25 double folds ✔Correct Answer-false
The value of the Student's T-distribution when compared to the normal distribution is:
✔Correct Answer-The Student's T-Distribution allows you to make estimate of confidence when
you do not know the actual standard deviation of the population
Orthotropic is a term used to describe __________ ✔Correct Answer-the directional
properties of paper
The load applied to a material divided by the cross sectional area is known as the __________
✔Correct Answer-stress
, This theory is not related to the tensile properties of paper ✔Correct Answer-Kubelka-Munk
Theory
T/F: Hercules size test is used the characterize the amount of water taken up by a paper sheet in
a defined amount of time ✔Correct Answer-false
The breaking length of paper describes _______________ ✔Correct Answer-the length of
paper required to break the sheet if the paper is held at one end
What molecular is cellulose made of? ✔Correct Answer-glucose
As beating continues, the freeness ________ ✔Correct Answer-goes down
A paper sheet has increase tensile strength and decreased basis weight. What should you do to
get the properties back in specification? ✔Correct Answer-Decrease refining and increase
basis weight
What is largest types of paper produced, by weight? ✔Correct Answer-packaging grades
Which of the following is an example of a TCF bleaching sequence? ✔Correct Answer-O-Z-E-P
Shives in brownstock are mostly removed in the _______ process ✔Correct Answer-screening
What type of additive is used to improve sheet smoothness and opacity? ✔Correct Answer-
fillers
Cellulose is a polymer made up of what sugar? ✔Correct Answer-glucose
What are the two broad categories of paper machines? ✔Correct Answer-fourdrinier and
twin-wire
A paper sheet has a density of 620 kg/m^3 and a basis weight of 85 g/m^2. What is the
thickness of the sheet? ✔Correct Answer-0.137 mm
T/F: Tear strength measures the amount of energy to tear through a paper sheet even though
the units on test are "force" units ✔Correct Answer-true
Tensile Energy Absorption (TEA) can be described as ✔Correct Answer-There area under the
force/displacement of a tensile test for paper
Which of the following test are test methods used to measure the Z-Direction properties of
paper? ✔Correct Answer-Scott Bond, Wax Pick, ZDT
