Download GTU BE/B.Tech 2018 Winter 3rd Sem New 2132902 Yarn Manufacturing I Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem New 2132902 Yarn Manufacturing I Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132902 Date: 05/12/2018

Subject Name: Yarn Manufacturing-I

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) Mention the objectives of Blowroom. 3
(b) Write short note on Grid. 4
(c)
Explain the use of (i) Gravity trap (ii) Metal detectors and (iii) Dust separators in
blow-room.
7

Q.2 (a) Briefly explain objects of card. 3
(b) Explain working of Step cleaner with a suitable sketch. 4
(c)
What is importance of grinding for card clothing? Hence explain any one type of
grinding roller with neat sketch.
7
OR
(c)
Explain recent development at feed roller and licker in roller of card with suitable
diagram.
7
Q.3 (a) What is tandem card? 3
(b)
Bottom calendar roller dia = 7.2 inch, rpm = 12 & wt. of every yards lap is 12 oz
and cleaning efficiency 78%. Find out the production of Blow room per shift.
4
(c) Give the route of passage of material in the Carding machine. 7
OR
Q.3 (a) State the objectives of Ginning. 3
(b)
Write down the formula for the production calculation of card in kgs/shift. Also
write the formula for calculating cleaning efficiency of blow room.
4
(c) Write a short note on processing of manmade fibre at Blowroom. 7
Q.4 (a) Mention the advantages of Baling operation. 3
(b) Write the importance of sliver coiling mechanism used in carding machine. 4
(c) Explain Knife roller gin with suitable diagram. 7
OR
Q.4 (a) What is IGS at Card? 3
(b) State various lap defects and remedial measures for the same. 4
(c) Explain with neat sketch Multiple Mixer. 7
Q.5 (a)
Enlist types of ginning machine. Name the ginning machine suitable for long and
short staple fibers.
3
(b) Explain carding action and stripping action. 4
(c) Explain the working of Scutcher section at Blowroom. 7
OR
Q.5 (a) Explain flexible card clothing in brief. 3
(b) Discuss the latest developments in Ginning machine. 4
(c) Explain piano feed mechanism of blow room with diagram. 7

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