Download GTU BE/B.Tech 2018 Winter 4th Sem New 2142901 Yarn Manufacturing Ii Question Paper

FirstRanker.com
Subject Code: 2142901
GUJARAT TECHNOLOGICAL UNIVERSITY

--- Content provided by​ FirstRanker.com ---

BE - SEMESTER-1V (NEW) EXAMINATION - WINTER 2018
Subject Name: Yarn Manufacturing - II
Date: 05/12/2018
Time: 02:30 PM TO 05:00 PM
Total Marks: 70

--- Content provided by⁠ FirstRanker.com ---

Instructions:

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

--- Content provided by FirstRanker.com ---

(A) What Is The Objects Of Draw Frame?
(B) With Neat Sketch Explain The Passage Of Material On Draw Frame Machine.
(C) Explain The Sequence Of Operation In A Rectilinear Comber.

Q.2
(A) Write Down The Formula To Calculate The Production Of Draw Frame In Kgs/Shift.

--- Content provided by FirstRanker.com ---

(B) What Is Bobbin Lead And Flyer Lead. Discuss
(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.

Q.2
OR
(A) Explain Various Comber Settings.

--- Content provided by​ FirstRanker.com ---

(B) Briefly Explain Suction System For Drafting Arrangement In Drawframe
(C) Which Parameters Are Influence In The Feed Stock On Combing?

Q.3
(A) Write Short Note On Drafting Wave. Also Suggest Steps To Control The Problem.
(B) Why Even Number Of Machines Are Used Between Card And Comber?

--- Content provided by⁠ FirstRanker.com ---

(C) Discuss The Latest Developments On A Drawframe Machine.

Q.3
OR
(A) Write Short Note On 1) Open Loop Autoleveller 2) Close Loop Autoleveller.
(B) What Is Forward Feed And Backward Feed In Comber.

--- Content provided by‌ FirstRanker.com ---

(C) Explain The Working Of Autoleveller On Drawframe.

Q4
(A) Write A Short Note On Modern Lap Preparation Systems.
(B) Enlist Object Of Speedframe
(C) Calculate Speed Frame Production In Pound/Shift/Spindle And Draft From Following Data:

--- Content provided by‍ FirstRanker.com ---

Flyer Speed: 1200rpm
Sliver Hank: 0.16
Roving Hank: 2
TM: 1.2
Efficiency: 85%

--- Content provided by‍ FirstRanker.com ---

Q4
OR
(A) State The Objectives Of Builder Motion At Speedframe And Explain How It Is Achieved With A Neat Sketch.

Q5
(A) Write The Function Of The Following Elements Used In Roving Frame:

--- Content provided by FirstRanker.com ---

1) Spacer; 2) Condenser; 3) Flyer Tops
(B) Calculate Comber Production In Kg/Day/Machine From The Following Data:
Type Of Feed: Backward.
Feed/Nip 6 Mm
Waste Percentage: 16

--- Content provided by‍ FirstRanker.com ---

Comber Speed: 425 Nips/Min
Comber Lap Hank :- 0.0125
Efficiency: 88%
Maximum Fiber Length (Fm): 40mm
(C) Discuss The Various Parameters Influencing Combing Operation.

--- Content provided by‌ FirstRanker.com ---

Q5
OR
(A) Write The Function Of Pressure Bar Used In Drafting System Of Draw Frame Machine.
(B) Write On The Latest Developments In The Speedframe Machine.
(C) Explain Passage Of Material On Super Lap Former.

--- Content provided by​ FirstRanker.com ---