Download GTU BE/B.Tech 2019 Winter 3rd Sem New 2132901 Textile Fibres Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 2132901 Textile Fibres Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 2132901 Date: 28/11/2019

Subject Name: Textile Fibres
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


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MARKS

Q.1 (a) Define: Monomer, Polymer & DP. 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
(c) 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
Q.3 (a) State the advantages of high speed spinning. 03
(b) Write briefly about the sisal fibres. 04
(c) Explain various steps involved in production of triacetate fibre. 07
Q.4 (a) Draw a neat sketch of the dry spinning machine. 03
(b) What is degumming of silk? 04
(c) Write in detail about the wool fibre. 07
OR
Q.4 (a) What is spin finish? 03
(b) State the properties of Alpaca animal fibre. 04
(c) Write a short note on nylon fibre. 07
Q.5 (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
Q.5 (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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