GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
Subject Name: Textile Fibres
Date: 28/11/2019
Time: 02:30 PM TO 05:00 PM
Total Marks: 70
Subject Code: 2132901
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER- III (New) EXAMINATION — WINTER 2019Subject Name: Textile Fibres
Date: 28/11/2019
Time: 02:30 PM TO 05:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 (a) Define: Monomer, Polymer & DP. | MARKS 03 |
| (b) Explain the concept of crystallinity and orientation. | 04 |
| (c) Discuss about the requirements for fibre formation. | 07 |
| Q.2 (a) Give the classification of textile fibres. | 03 |
| (b) Write briefly about the cotton fibre. | 04 |
| (c) Discuss the properties and manufacturing process of viscose rayon fibre. | 07 |
| OR | |
| (a) Explain the melt spinning process with a neat sketch. | 07 |
| Q.3 (a) State the unique properties of man-made fibres. | 03 |
| (b) What is addition and condensation polymerization? | 04 |
| (c) Explain the wet spinning process with a neat sketch. | 07 |
| OR | |
| (a) State the advantages of high speed spinning. | 03 |
| Q.4 (a) Write briefly about the sisal fibres. | 04 |
| (b) Explain various steps involved in production of triacetate fibre. | 07 |
| (c) Draw a neat sketch of the dry spinning machine. | 03 |
| Q.5 (a) What is degumming of silk? | 04 |
| (b) Write in detail about the wool fibre. | 07 |
| OR | |
| (a) What is spin finish? | 03 |
| (b) State the properties of Alpaca animal fibre. | 04 |
| (c) Write a short note on nylon fibre. | 07 |
| (a) Write briefly about the pineapple fibre. | 03 |
| (b) Write briefly about the polyurethane fibres. | 04 |
| (c) Discuss the physical & chemical properties of polyester fibre. | 07 |
| OR | |
| (a) Draw the flow diagram of polypropylene filament yarn production. | 03 |
| (b) Write briefly on the bast fibres. | 04 |
| (c) Discuss in detail about the properties and applications of the latest textile fibres. | 07 |
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