Download GTU BE/B.Tech 2019 Winter 7th Sem Old 172902 Modern Weaving Technology Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem Old 172902 Modern Weaving Technology Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (Old) EXAMINATION ? WINTER 2019
Subject Code: 172902 Date: 30/11/2019

Subject Name: Modern Weaving 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.

Q.1 (a) Discuss in detail with the help of neat diagrams different types of selvedges
formed on shuttle-less looms.
07
(b) What do you mean by WIR and WUR? Explain accumulators with suitable
diagram.
07

Q.2 (a) Discuss pre-requisites of water jet loom. Also discuss advantages and
disadvantages of water jet loom
07
(b) Write short note on multiphase loom. 07
OR
(b) Describe about creel of modern warping machines. 07

Q.3 (a) Discuss in detail about the types of Projectiles. 07
(b) Explain picking mechanism of projectile weaving machine with a neat sketch. 07
OR
Q.3 (a) Explain and Compare beat-up mechanism of projectile loom with that of
ordinary shuttle loom.
07
(b) Explain the modern developments on air-jet looms. 07

Q.4 (a) What are the differences between Dewas system and Gabler system of rapier
looms.
07
(b) With the help of neat diagrams, explain the driving mechanism used on rigid
rapier loom to drive the rapier head in detail.
07
OR
Q.4 (a) What type of fabric is woven on air jet weaving machine. Explain blowing
sequence of relay nozzles and lining control.
07
(b) Give various equations of drag force acting on the weft yarn on an air jet loom? 07

Q.5 (a) Explain the path of yam of water jet loom in warp and weft direction. 07
(b) Write a short note on drying of fabric in water jet weaving machine. Quality of
water needed and water jet width.
07
OR

Q.5 (a) Write short note on recent development in winding machine. 07
(b) Highlight in detail the features of the State-of-the-art sizing machines. 07

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