Packing L1 - Day One Quiz
Quiz after day one of the packing school level 1
Questions and Answers
- 1.
1) What type of fiber is Kevlar?
- A.
Aramid
- B.
Carbon
- C.
Cotton
- D.
Fiberglass
Correct Answer
A. AramidExplanation
Kevlar is a type of fiber known as aramid. Aramid fibers are synthetic fibers that are known for their high strength and heat resistance. Kevlar, specifically, is a brand name for a type of aramid fiber that is commonly used in applications such as bulletproof vests and protective clothing. It is known for its exceptional strength-to-weight ratio and its ability to withstand high temperatures.Rate this question:
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- 2.
1) At what temperature does PTFE glaze (Chesterton temperature to watch out for)
- A.
500 F
- B.
350 F
- C.
600 F
- D.
400 F
Correct Answer
A. 500 FExplanation
PTFE, also known as Teflon, is a synthetic fluoropolymer that has a high melting point. The given question asks for the temperature at which PTFE glazes. Glazing refers to the process where the surface of PTFE becomes smooth and glossy due to melting. Among the given options, the correct answer is 500 F. This means that when PTFE is exposed to a temperature of 500 F, it will start to glaze.Rate this question:
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- 3.
1) What pressure should the flush pressure be set above stuffing box pressure?
- A.
1 Bar (14.5 PSI)
- B.
.5 Bar (7 PSI)
- C.
2 Bar (30 PSI)
Correct Answer
A. 1 Bar (14.5 PSI)Explanation
The flush pressure should be set above the stuffing box pressure in order to prevent any leakage or damage to the stuffing box. By setting the flush pressure at 1 Bar (14.5 PSI), there will be enough pressure to effectively flush any contaminants or debris away from the stuffing box, ensuring its proper functioning and preventing any potential issues.Rate this question:
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- 4.
What is NOT a quality of Exfoliated Graphite
- A.
Continuous fiber
- B.
Build in Lubrication
- C.
Created with graphite powder
- D.
Comes in layered graphite sheet
Correct Answer
A. Continuous fiberExplanation
Exfoliated Graphite is a form of graphite that is created by expanding graphite powder. It is known for its layered structure, where it comes in the form of sheets. It also has built-in lubrication properties, which make it an excellent material for various applications. However, it does not possess continuous fiber, which refers to a type of reinforcement material that is commonly found in composite materials. Therefore, continuous fiber is not a quality of Exfoliated Graphite.Rate this question:
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- 5.
What braiding style utilizes larger strands?
- A.
Square
- B.
Interbraid
Correct Answer
A. SquareExplanation
Square braiding style utilizes larger strands.Rate this question:
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- 6.
What helps to stop wicking
- A.
Break in lube
- B.
Built in lube
Correct Answer
B. Built in lubeExplanation
The correct answer is "built in lube." This means that having a built-in lubricant helps to stop wicking. Wicking refers to the process where a liquid spreads through a material, such as oil spreading through a fabric. By having a lubricant already integrated into a product or material, it can prevent the liquid from spreading and thus stop wicking.Rate this question:
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- 7.
With modern fibers, and lubrication, there is little need for lubricating the packing through the lantern ring.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement suggests that with the advancements in modern fibers and lubrication, there is minimal requirement to lubricate the packing through the lantern ring. This implies that the packing is already well-lubricated and does not require additional lubrication. Therefore, the answer "True" indicates that the statement is correct.Rate this question:
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- 8.
What fiber can "glaze"
- A.
PTFE
- B.
Carbon
- C.
Fiberglass
- D.
Flax
Correct Answer
A. PTFEExplanation
PTFE, also known as polytetrafluoroethylene, is a type of synthetic fiber that can "glaze". This means that it has the ability to form a smooth and shiny surface when heated or melted. PTFE is commonly used in various applications where low friction, high heat resistance, and chemical resistance are required, such as non-stick cookware, electrical insulation, and seals. Its glazing property makes it suitable for creating a smooth and glossy finish on surfaces, providing additional benefits like easy cleaning and improved durability.Rate this question:
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- 9.
What packing is made with Nomex fiber
- A.
1730
- B.
1760
- C.
1727
- D.
412-W
Correct Answer
A. 1730 -
- 10.
What quality PTFE does NOT have
- A.
High thermal growth rate
- B.
Low Coef of friction
- C.
Continuous fiber
- D.
Oxidation limit of 800 F
Correct Answer
D. Oxidation limit of 800 FExplanation
PTFE, also known as Teflon, is a high-performance polymer that possesses several desirable qualities. It has a low coefficient of friction, making it an excellent choice for applications where reduced friction is required. PTFE also has a high thermal stability, with a low thermal growth rate, enabling it to withstand high temperatures. Additionally, it can be reinforced with continuous fibers to enhance its mechanical properties. However, PTFE has a limitation when it comes to oxidation, as it has an oxidation limit of 800 F. This means that it may not be suitable for applications that require exposure to higher temperatures.Rate this question:
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- 11.
If a shaft is 10 inches, and the box ID is 12 Inches, what is the cross section?
- A.
1 inch
- B.
2 inch
- C.
.500 inch
- D.
.750 inch
Correct Answer
A. 1 inchExplanation
The cross section refers to the diameter of the shaft or box. In this case, the shaft has a diameter of 10 inches and the box has a diameter of 12 inches. Since the question asks for the cross section, we need to find the smaller diameter, which is 10 inches. Therefore, the cross section is 1 inch.Rate this question:
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- 12.
Check off what is natural fiber
- A.
Raime
- B.
Hemp
- C.
Cotton
- D.
Aramid
- E.
PTFE
- F.
Fiberglass
- G.
Graphite
Correct Answer(s)
A. Raime
B. Hemp
C. CottonExplanation
The correct answer includes Raime, Hemp, and Cotton. These three options are all natural fibers. Raime is a type of plant fiber derived from the stalks of the Boehmeria nivea plant. Hemp is another plant fiber obtained from the Cannabis sativa plant. Cotton is a natural fiber that comes from the seed pods of the cotton plant. Aramid, PTFE, Fiberglass, and Graphite are not natural fibers; they are either synthetic or mineral-based materials.Rate this question:
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- 13.
What is NOT considered a man made fiber
- A.
Carbon
- B.
Aramid
- C.
Flax
- D.
PTFE
Correct Answer
C. FlaxExplanation
Flax is not considered a man-made fiber because it is derived from the flax plant, which is a natural source. Man-made fibers are those that are synthesized or created by humans using chemical processes, whereas flax is a natural fiber obtained from the stem of the flax plant. Therefore, flax does not fall under the category of man-made fibers.Rate this question:
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- 14.
What is the pH limit of 412W
- A.
3-7
- B.
1-14
- C.
4-10
- D.
0-14
Correct Answer
C. 4-10Explanation
The correct answer is 4-10. This range indicates the pH limit of 412W, which means that the substance can have a pH value anywhere between 4 and 10. pH is a measure of acidity or alkalinity, with values below 7 indicating acidity, values above 7 indicating alkalinity, and a pH of 7 being neutral. Therefore, 412W can be slightly acidic, neutral, or slightly alkaline, but it cannot have a pH value outside the range of 4-10.Rate this question:
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- 15.
What is the pH limit of PTFE
- A.
2-12
- B.
5-10
- C.
0-14
- D.
1-14
Correct Answer
C. 0-14Explanation
The pH limit of PTFE is 0-14 because PTFE, also known as Teflon, is a chemically inert material that is resistant to most chemicals and solvents. It has a high melting point and is non-reactive, making it suitable for use in a wide range of applications, including as a lining for chemical containers and in the construction of laboratory equipment. The pH scale ranges from 0 to 14, with 0 being highly acidic, 7 being neutral, and 14 being highly alkaline. Therefore, PTFE can withstand exposure to both acidic and alkaline environments, giving it a pH limit of 0-14.Rate this question:
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- 16.
If you have a pump with a stuffing box pressure of 30 PSI, a shaft of 2.5", box bore of 3.5", and a pH of 12, what is the correct answer.
- A.
1730, 3/4", and a flush pressure of 40 PSI
- B.
412W, .500", and a flush pressure of 50 PSI
- C.
1730, .500", and a flush pressure of 45 PSI
- D.
412W, .500", and a flush pressure of 45 PSI
Correct Answer
C. 1730, .500", and a flush pressure of 45 PSI -
- 17.
If a customer has 5 pumps with a shaft size of 3" and a cross section of .500", all needed 5 rings of packing, how many feet of packing will they need to pack the pumps?
- A.
22.9
- B.
275
- C.
55
- D.
4.5
Correct Answer
A. 22.9Explanation
To calculate the total feet of packing needed, we need to multiply the number of pumps (5) by the shaft size (3") and the cross section (.500"). This will give us the total volume of packing required. The result is 22.9 cubic feet of packing.Rate this question:
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- 18.
What is the inter-braided version of 1400R?
- A.
Graphmax
- B.
1400R-IB
- C.
1400
- D.
412-W
Correct Answer
A. GraphmaxExplanation
The inter-braided version of 1400R is Graphmax.Rate this question:
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- 19.
(Imperial) If a pump has a shaft/sleeve at 3" and a speed of 3000 RPM, what is the shaft speed? (Si) if a pump has a shaft/sleeve at 30 mm and a speed of 3000 RPM, what is the shaft speed?
- A.
2355 FPM (4.7 MPS)
- B.
750 FPM(282 MPS)
- C.
28260 FPM(1.5 MPS)
- D.
12 FPM(12 MPS)
Correct Answer
A. 2355 FPM (4.7 MPS)Explanation
The correct answer is 2355 FPM (4.7 MPS). The question asks for the shaft speed of a pump with a shaft/sleeve at a certain size and speed. The given answer provides the correct conversion from inches to feet and from feet per minute to meters per second, giving the shaft speed in both Imperial and SI units.Rate this question:
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- 20.
In modern times, Lantern Rings are used for only this reason:
- A.
To keep the packing cool
- B.
To keep the packing lubricated
- C.
To provide a Clean fluid to keep solids out of packing area
- D.
To allow leakage to warn of packing perofrmance
Correct Answer
C. To provide a Clean fluid to keep solids out of packing areaExplanation
Lantern Rings are used in modern times to provide a clean fluid that helps keep solids out of the packing area. This means that the ring helps maintain a clean and debris-free environment, preventing any solid particles from entering the packing area. By doing so, it ensures the smooth functioning of the packing and prevents any potential damage or blockage caused by solids.Rate this question:
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Current Version
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Mar 19, 2023Quiz Edited by
ProProfs Editorial Team -
Jul 16, 2013Quiz Created by
Awglobaltrain
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