PTFE 3720 Quiz 1 - Fall 2010

PTFE 3720 Quiz 1 - Fall 2010 - Name _ Quiz 1 Version B All...

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Name _____________________ Quiz 1 – Version B All of questions 1-44 count 2 points each Questions 45-48 count 3 points each 1. Which is not a method of YARN spinning? a. Wet Spinning b. Friction Spinning c. Ring Spinning d. Rotor Spinning e. Open End Spinning 2. Specific Stress is defined as a. F/A b. Force/(linear density) c. A/F d. F/A 0 e. the density of a monofilament 3. Typical Coke and water bottles are made of which process? a. blow film extrusion process b. acrylic modification process c. air gap spinning process d. blow molding process e. none of the above 5. What type of fiber is typically used in t-shirts? a. Nylon b. polyester c. Kevlar
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d. Rayon e. cotton 6. Which of the following is not a property of flat yarns? a. poor moisture transport b. poor thermal insulation c. high skin contact d. high elasticity 7. What is cotton composed of? a. bast fibers b. Nylon c. Cellulose d. Polyester e. poly-amino acids 8. Which of the following fiber processing methods requires two solvents? a. Melt Spinning b. Rough Spinning c. Dry Spinning d. Wet Spinning e. Roving 9. When a di-acid is reacted with a di-amine to form a polyamide, what molecule is released? a. nothing
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c. carbon dioxide d. water e. alcohol 10. Which of the following is a unit of tenacity? a. g/denier b. g/m 3 c. m 2 d. g/J e. pounds/m 2 11. Denier is the weight in grams of ________ of fiber? a. 9000 cm b. 9000 ft c. 9000 m d. 9000 km 12. In speaking about thread count for fabrics such as sheets, the yarn size _______ with increasing thread count? a. decreases b. increase c. remains the same 13. What is the name of the following functional group: COOH? a. amide
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PTFE 3720 Quiz 1 - Fall 2010 - Name _ Quiz 1 Version B All...

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