GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
Seat No.:
Enrolment No.
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-III (New) EXAMINATION — WINTER 2018
Subject Code: 2132902
Subject Name: Yarn Manufacturing-1
Time: 10:30 AM TO 01:00 PM
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Date: 05/12/2018
Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| 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, rpmr=.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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