Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2142901 Yarn Manufacturing Ii Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2142901 Date: 05/12/2018
Subject Name: Yarn Manufacturing - II
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 Is The Objects Of Draw Frame? 3
(B)
With Neat Sketch Explain The Passage Of Material On Draw Frame
Machine.
4
(C)
Explain The Sequence Of Operation In A Rectilinear Comber.
7
Q.2 (A)
Write Down The Formula To Calculate The Production Of Draw Frame In
Kgs/Shift.
3
(B)
What Is Bobbin Lead And Flyer Lead. Discuss
4
(C)
Mention Various Types Of Drafting System Used In Draw Frame. With A
Suitable Diagram Explain The 3 Over 3 Roller Drafting System Used In
Draw Frame.
7
OR
(C)
Explain Various Comber Settings.
7
Q.3 (A) Briefly Explain Suction System For Drafting Arrangement In Drawframe 3
(B)
Which Parameters Are Influence In The Feed Stock On Combing?
4
(C)
Write Short Note On Drafting Wave. Also Suggest Steps To Control The
Problem.
7
OR
Q.3 (A) Why Even Number Of Machines Are Used Between Card And Comber? 3
(B)
Discuss The Latest Developments On A Drawframe Machine.
4
(C)
Write Short Note On 1) Open Loop Autoleveller 2) Close Loop
Autoleveller.
7
Q.4 (A)
What Is Forward Feed And Backward Feed In Comber.
3
(B)
Explain The Working Of Autoleveller On Drawframe.
4
(C)
Write A Short Note On Modern Lap Preparation Systems.
7
OR
Q.4 (A) Enlist Object Of Speedframe 3
(B)
Calculate Speed Frame Production In Pound/Shift/Spindle And Draft
From Following Data:
Flyer Speed: 1200rpm
Sliver Hank: 0.16
Roving Hank: 2
T.M: 1.2
Efficiency: 85%
4
(C)
State The Objectives Of Builder Motion At Speedframe And Explain How
It Is Achieved With A Neat Sketch.
7
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2142901 Date: 05/12/2018
Subject Name: Yarn Manufacturing - II
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 Is The Objects Of Draw Frame? 3
(B)
With Neat Sketch Explain The Passage Of Material On Draw Frame
Machine.
4
(C)
Explain The Sequence Of Operation In A Rectilinear Comber.
7
Q.2 (A)
Write Down The Formula To Calculate The Production Of Draw Frame In
Kgs/Shift.
3
(B)
What Is Bobbin Lead And Flyer Lead. Discuss
4
(C)
Mention Various Types Of Drafting System Used In Draw Frame. With A
Suitable Diagram Explain The 3 Over 3 Roller Drafting System Used In
Draw Frame.
7
OR
(C)
Explain Various Comber Settings.
7
Q.3 (A) Briefly Explain Suction System For Drafting Arrangement In Drawframe 3
(B)
Which Parameters Are Influence In The Feed Stock On Combing?
4
(C)
Write Short Note On Drafting Wave. Also Suggest Steps To Control The
Problem.
7
OR
Q.3 (A) Why Even Number Of Machines Are Used Between Card And Comber? 3
(B)
Discuss The Latest Developments On A Drawframe Machine.
4
(C)
Write Short Note On 1) Open Loop Autoleveller 2) Close Loop
Autoleveller.
7
Q.4 (A)
What Is Forward Feed And Backward Feed In Comber.
3
(B)
Explain The Working Of Autoleveller On Drawframe.
4
(C)
Write A Short Note On Modern Lap Preparation Systems.
7
OR
Q.4 (A) Enlist Object Of Speedframe 3
(B)
Calculate Speed Frame Production In Pound/Shift/Spindle And Draft
From Following Data:
Flyer Speed: 1200rpm
Sliver Hank: 0.16
Roving Hank: 2
T.M: 1.2
Efficiency: 85%
4
(C)
State The Objectives Of Builder Motion At Speedframe And Explain How
It Is Achieved With A Neat Sketch.
7
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2
Q.5 (A)
Write The Function Of The Following Elements Used In Roving Frame:
1) Spacer; 2) Condenser; 3) Flyer Tops
3
(B)
Calculate Comber Production In Kg/Day/Machine From The Following
Data:
Type Of Feed: Backward.
Feed/Nip 6 Mm
Waste Percentage:16
Comber Speed: 425 Nips/Min
Comber Lap Hank :- 0.0125
Efficiency: 88%
Maximum Fiber Length (Fm): 40mm
4
(C)
Discuss The Various Parameters Influencing Combing Operation.
7
OR
Q.5 (A)
Write The Function Of Pressure Bar Used In Drafting System Of Draw
Frame Machine.
3
(B)
Write On The Latest Developments In The Speedframe Machine.
4
(C)
Explain Passage Of Material On Super Lap Former.
7
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This post was last modified on 20 February 2020