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

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

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?V (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2152907 Date: 19/06/2019

Subject Name: Man Made Fibre Technology

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) Describe important properties of man made fibres which has made it very
popular.
03
(b) Discuss in brief about thermal transition. 04
(c) With a neat sketch describe process of air jet texturising. 07

Q.2 (a) Explain crystalanity and orientation in manmade fibres. 03
(b) Discuss briefly about fibres with noncircular cross section and hollow
fibres.
04
(c) With a neat sketch describe turbo stapler. 07
OR
(c) Describe super micro filaments and its production technique. 07
Q.3 (a) Mention different routes through which polyester can be made flame
retardant.
03
(b) Discuss briefly about fibres with microvoids and microcraters. 04
(c) List out various methods of spin finish and describe any two methods
briefly with neat sketch.
07
OR
Q.3 (a) Describe method to produce antistatic nylon. 03
(b) Describe role of spin finish and its composition. 04
(c) What is heat setting and why it is carried out ?
Hence describe temporary sett.
Also state its limitation.
07
Q.4 (a) State the types of aramid fibres.
Hence state their applications.
03
(b) Write a short note on metal fibres. 04
(c) Describe briefly manufacturing process of tyre cords. 07
OR
Q.4 (a) Describe applications of kynol fibres. 03
(b) Write a short note on carbon fibres. 04
(c) State different varieties of glass fibres .
Discuss important properties and applications of glass fibres.
07
Q.5 (a) State the objects of texturising. 03
(b) Describe gear crimping briefly. 04
(c) Describe false twist texturising process with neat sketch. 07
OR

Q.5 (a) Describe briefly defects in false twist textured yarn. 03
(b) Describe important process variables in false twist texturising. 04
(c) With a neat sketch describe stuffer box texturising. 07

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