Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2017 Winter 7th Sem New 2172902 Modern Weaving Technolgy Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2172902 Date:02/11/2017
Subject Name: Modern Weaving Technolgy
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.
MARKS
Q.1 (a) State different types of weft accumulators used in
shuttleless looms.
03
(b) Explain any two types of weft tensioners used on
shuttleless looms with neat diagrams.
04
(c) With the help of neat diagram, explain the torsion bar
mechanism of Sulzer projectile loom in detail.
07
Q.2 (a) State different types of weft supply packages used on
shuttleless looms.
03
(b) Explain the principle of working of continuous weft
feeding devices.
04
(c) With the help of neat diagram, explain the shedding
mechanism of Sulzer projectile loom in detail.
07
OR
(c) With the help of neat diagram, explain the let-off
mechanism of Sulzer projectile loom in detail.
07
Q.3 (a) Compare rigid rapier with flexible rapier loom. 03
(b) State and explain different ways of classifying rapier
looms.
04
(c) With the help of neat diagram, explain double rapier tip
transfer type weft insertion system in detail.
07
OR
Q.3 (a) State the advantages of modular structure of M 8300
Multi-phase looms.
03
(b) Explain picking mechanism of M8300 Multiphase loom
with the help of neat diagrams.
04
(c) With the help of neat diagrams, explain any one
mechanism used for driving rigid rapier head in detail.
Also, state some of the important areas of applications of
rigid rapier looms.
07
Q.4 (a) Give principle of Fluid jet looms. 03
(b) Highlight the features of recent generation Sectional
Warper.
04
(c) Discuss the factors that essentially determine whether a
yarn is suitable for pneumatic insertion or not.
07
OR
Q.4 (a) Water & air jet are not competitor but complementary to
each other. Justify.
03
(b) Write in brief about Autotense FX. 04
(c) Discuss the pre-requisite of water jet loom. Also discuss
advantages & disadvantages of water jet loom.
07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2172902 Date:02/11/2017
Subject Name: Modern Weaving Technolgy
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.
MARKS
Q.1 (a) State different types of weft accumulators used in
shuttleless looms.
03
(b) Explain any two types of weft tensioners used on
shuttleless looms with neat diagrams.
04
(c) With the help of neat diagram, explain the torsion bar
mechanism of Sulzer projectile loom in detail.
07
Q.2 (a) State different types of weft supply packages used on
shuttleless looms.
03
(b) Explain the principle of working of continuous weft
feeding devices.
04
(c) With the help of neat diagram, explain the shedding
mechanism of Sulzer projectile loom in detail.
07
OR
(c) With the help of neat diagram, explain the let-off
mechanism of Sulzer projectile loom in detail.
07
Q.3 (a) Compare rigid rapier with flexible rapier loom. 03
(b) State and explain different ways of classifying rapier
looms.
04
(c) With the help of neat diagram, explain double rapier tip
transfer type weft insertion system in detail.
07
OR
Q.3 (a) State the advantages of modular structure of M 8300
Multi-phase looms.
03
(b) Explain picking mechanism of M8300 Multiphase loom
with the help of neat diagrams.
04
(c) With the help of neat diagrams, explain any one
mechanism used for driving rigid rapier head in detail.
Also, state some of the important areas of applications of
rigid rapier looms.
07
Q.4 (a) Give principle of Fluid jet looms. 03
(b) Highlight the features of recent generation Sectional
Warper.
04
(c) Discuss the factors that essentially determine whether a
yarn is suitable for pneumatic insertion or not.
07
OR
Q.4 (a) Water & air jet are not competitor but complementary to
each other. Justify.
03
(b) Write in brief about Autotense FX. 04
(c) Discuss the pre-requisite of water jet loom. Also discuss
advantages & disadvantages of water jet loom.
07
2
Q.5 (a) Enlist the uses of Triaxial fabrics. 03
(b) Discuss the variables that influence the insertion time &
therefore the efficiency & performance of the Air jet
weaving machine.
04
(c) Highlight in detail the features of the State-of-the-art
sizing machines.
07
OR
Q.5 (a) Enlist the factors on which the flying stability of the weft
inserted depends in a Water jet loom.
03
(b) Discuss the importance of ?short quick blast? of air from
nozzle.
04
(c) With a neat diagram explain the operation of Weft supply
system on Water jet weaving machine.
07
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This post was last modified on 20 February 2020