Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 3132902 Yarn Manufacture I Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3132902 Date: 28/11/2019
Subject Name: Yarn Manufacture I
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) What are the objectives of ginning machine? 03
(b) With suitable sketches discuss the modern development in
Cylinder region of Card.
04
(c) Explain the passage of material on Card with a labelled figure. 07
Q.2 (a) What are the objectives of Card? Why Carding machine is
known as the heart of a spinning mill?
03
(b) What are the advantages and disadvantages of manual
picking and machine picking of cotton fibers?
04
(c) Which fibers are suitable to process in Macarthy ginning
machine? With a suitable sketch show the construction and
working of Macarthy ginning machine.
07
OR
(c) Which fibers are suitable to process in Saw ginning machine?
With a suitable sketch show the construction and working of
Saw ginning machine.
07
Q.3 (a) What are the objectives of Blow room? 03
(b) What is the function of coarse cleaning or (Pre cleaner)
machine in Blowroom line? Draw a labelled figure to show
any one coarse cleaning machine.
04
(c) Differentiate between blending and mixing? Explain any one
mixing machine used in blow room line with a labelled
figure.
07
OR
Q.3 (a) What is the function of Grid Bar? With suitable sketches show
the different type of Grid bars.
03
(b) With a suitable diagram explain the construction and working
of any one Fine cleaning machine used in Blowroom line.
04
(c) What is the function of Bale opener in Blowroom line?
Explain the construction and working of an automatic bale
opener with a labelled figure.
07
Q.4 (a) What is the function of Autoleveller? Which type of
autoleveller is used in Card?
03
(b) Define Grinding process? With a suitable sketch explain any
one grinding tool used in Card.
04
(c) Explain Carding and stripping action in Card with suitable
figures. Also, draw figures to show the different types of Card
clothing.
07
OR
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3132902 Date: 28/11/2019
Subject Name: Yarn Manufacture I
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) What are the objectives of ginning machine? 03
(b) With suitable sketches discuss the modern development in
Cylinder region of Card.
04
(c) Explain the passage of material on Card with a labelled figure. 07
Q.2 (a) What are the objectives of Card? Why Carding machine is
known as the heart of a spinning mill?
03
(b) What are the advantages and disadvantages of manual
picking and machine picking of cotton fibers?
04
(c) Which fibers are suitable to process in Macarthy ginning
machine? With a suitable sketch show the construction and
working of Macarthy ginning machine.
07
OR
(c) Which fibers are suitable to process in Saw ginning machine?
With a suitable sketch show the construction and working of
Saw ginning machine.
07
Q.3 (a) What are the objectives of Blow room? 03
(b) What is the function of coarse cleaning or (Pre cleaner)
machine in Blowroom line? Draw a labelled figure to show
any one coarse cleaning machine.
04
(c) Differentiate between blending and mixing? Explain any one
mixing machine used in blow room line with a labelled
figure.
07
OR
Q.3 (a) What is the function of Grid Bar? With suitable sketches show
the different type of Grid bars.
03
(b) With a suitable diagram explain the construction and working
of any one Fine cleaning machine used in Blowroom line.
04
(c) What is the function of Bale opener in Blowroom line?
Explain the construction and working of an automatic bale
opener with a labelled figure.
07
Q.4 (a) What is the function of Autoleveller? Which type of
autoleveller is used in Card?
03
(b) Define Grinding process? With a suitable sketch explain any
one grinding tool used in Card.
04
(c) Explain Carding and stripping action in Card with suitable
figures. Also, draw figures to show the different types of Card
clothing.
07
OR
2
(a) Draw a flowchart to show the passage of material in Tandem
card.
03
(b) Explain the working of a dust removal system used in modern
Blowroom line with a labelled figure.
04
(c) Draw a labelled figure of chute feed system. Discuss the
advantages and disadvantages of modern chute feed system
over a conventional lap feed system?
07
Q.5 (a) Draw labelled figures to show any two opening devices used
in Blow room line.
03
(b) In a Blowroom process, trash content in raw cotton and lap
was 5% and 1% respectively. Calculate the cleaning
efficiency of Blow room line.
04
(c) What are the objective of coiling mechanism? What are the
different types of coiling mechanisms used in Card? Draw the
sketches showing different coiling mechanisms.
07
OR
Q.5 (a) With a suitable sketch discuss the construction of flats in
Carding machine.
03
(b) Write in brief about the common defects and its remedies
observed in Card sliver.
04
(c) Calculate production of Carding machine in Kilograms (Kgs)
from the following data :
(i). Doffer diameter: 28 inches, (ii). Doffer speed: 30 rpm, (iii).
Working Hours: 8 hours, (iv). Efficiency: 95%, and
(v). Hank of sliver (Ne): 0.12.
07
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This post was last modified on 20 February 2020