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

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

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?III (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2132901 Date: 04/06/2019

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.


MARKS
Q.1 (a) Define following:
i) Staple ii) Filament iii) Yarn
03
(b) Write in short on fibre length and values of same for different fibres. 04
(c) Give a detailed classification of textile fibres with chemical names wherever
possible.
07

Q.2 (a) What is meant by fineness of the fibre? Provide values for fibres from
natural origin.
03
(b) Give differences between addition and condensation polymerization. 04
(c) Write a note on desirable properties of textile fibers. 07
OR
(c) Write on advantages and disadvantages of natural fibres. 07

Q.3 (a) Define: Mature, Immature and Dead cotton fiber. 03
(b) Discuss on crystalline and amorphouros region of fiber. 04
(c) Write a note on BT and organic cotton fiber. 07
OR
Q.3 (a) Give differences between melt, dry and wet spinning. 03
(b) Briefly write on electrospinning and nano fibres. 04
(c) Write in detail on different types of wool. 07

Q.4 (a) Which process parameters are important during production of viscose
fibres?
03
(b) State advantages and disadvantages of manmade fibers. 04
(c) Explain the cultivation process of silk fibre. 07
OR
Q.4 (a) Write a note on application of jute fiber. 03
(b) Differentiate between viscose rayon, polynosic and HWM rayons. 04
(c) Explain the manufacturing process of nylon fiber. 07

Q.5 (a) Write only the chemical reaction for two types of polyamide fibres. 03
(b) Give physical and chemical properties of polyester fiber. 04
(c) Explain the manufacturing of polyester fiber. 07
OR
Q.5 (a) Write a note on hemp fiber. 03
(b) Give physical and chemical properties of cotton fiber. 04
(c) Explain fine structure of cotton fiber in detail. 07

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