Download GTU BE/B.Tech 2019 Winter 5th Sem New 2152907 Man Made Fibre Technology Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 5th Sem New 2152907 Man Made Fibre Technology Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? V (New) EXAMINATION ? WINTER 2019
Subject Code: 2152907 Date: 29/11/2019

Subject Name: Man Made Fibre Technology
Time: 10:30 AM TO 01:00 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) What are the advantages of man-made fibres? 03
(b) State and write briefly about the various high performance fibres. 04
(c) Write in detail about the thermal transition. 07

Q.2 (a) Define texturising. 03
(b) Which are the different tow to top conversion systems? 04
(c) How is spin finish applied? Write in detail about the application
techniques.
07
OR
(c) Write in detail about the polyster yarns with microgrooves, microvoids and
microcraters.
07
Q.3 (a) Classify the manufactured fibres. 03
(b) Write briefly about the nature of set. 04
(c) How is the production of tyre cords carried out? Write in detail. 07
OR
Q.3 (a) What is molecular orientation and crystallinity in fibres. 03
(b) State the unique properties of asbestos fibres. 04
(c) Write in detail about the manufacturing process of glass fibres. 07
Q.4 (a) How are stretched and modified stretched yarns produced by conventional
methods?
03
(b) What are the unique properties of basofil fibres? 04
(c) Write in detail about the draw texturising. 07
OR
Q.4 (a) Write briefly about the principle of loop formations formation in air-jet
texturising.
03
(b) What are the advantages of draw textured yarns over conventional false
twist textured yarns?
04
(c) State and explain the process variables in air-jet texturising. 07
Q.5 (a) Give the classification of yarns in air-jet texturising. 03
(b) What is edge-crimping? 04
(c) Write in detail about the recent developments in texturising. 07
OR
Q.5 (a) What is knit-de-knit texturising? 03
(b) Write briefly about chemical texturising. 04
(c) State and write briefly about the latest developments in the field of man-
made fibres.
07
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