GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
Seat No.: Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
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E - SEMESTER- V (New) EXAMINATION - WINTER 2019
Subject Code: 2152603 Date: 02/12/2019
Subject Name: Textile & Metal Reinforcement of Elastomers
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) List out the technical advantages and limitations of Kevlar Aramid Fibres. | (03) |
| (b) Give the basic classification of fibres. | (04) | |
| (c) What are Industrial Textiles? Write its applications and its key requirements in Transportation field. | (07) | |
| Q.2 | (a) Name the simplest weave design in Woven fabric. Explain it in brief. | (03) |
| (b) Derive the formula : Twist =tan ? / (n x d) | (04) | |
| (c) Discuss the Cotton carding process with schematic diagram. OR --- Content provided by FirstRanker.com --- Describe the Wet spinning process for production of Rayon filament. | (07) | |
| Q.3 | (a) “Fibres are good reinforcing agents”. Give reason. | (03) |
| (b) Write in brief about Melt Bonding Process for Non-woven fabric. | (04) | |
| (c) Name the machine used for Heat setting and Adhesive treatment of Fabric. Explain any one process with schematic diagram. OR Give the basic mechanism of Peeling test: | (07) | |
| Q.4 | (a) Write a brief note on weft knitting. | (03) |
| (b) Explain the procedure to carry out Peel test of heavy duty fabrics and multi-ply constructions. | (04) | |
| (c) Write the practical significance of Moisture regain for fabric. Mention its formula also. | (07) | |
| Q.5 | (a) Write about the advantages of Resorcinol-Formaldehyde latex bonding for various fabrics. | (03) |
| (b) Discuss in detail about Santoweb short fibres. OR Define the term: Crimp. Express the formula to determine Crimp percentage for fabric. | (04) | |
| (c) Give the difference between Fabric coating and Fabric dipping. | (07) | |
| Q.6 | (a) “Fiber orientation is an important parameter for short fibre rubber composites”. Justify the statement. | (03) |
| (b) Mention the merits and demerits of adhesive bonding. | (04) | |
| (c) Write any four possible causes and remedies of CM failure. --- Content provided by FirstRanker.com --- ORExplain the Ebonite Bonding Process in detail. | (07) | |
| Q.7 | (a) List out the points for development of adhesives strength. | (03) |
| (b) Write the problems associated with RC failure and suggest the remedies also. | (04) | |
| (c) Describe the Isocyanate Bonding in detail. | (07) |
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