Download PTU B.Tech 2020 March Textile 3rd Sem Introduction To Textile Engineering Question Paper

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Roll No. EEEEEEEEEEN Total No. of Pages : 02
Total No. of Questions : 09

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INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

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1. Answer briefly :
   1. Define Yarn numbering system. Convert 20% N, to its equivalent tex value without using any direct formula.
   2. What are the units for measuring the fineness of cotton fibre? How it is related to denier while the maturity of the fibre is more than 80%?
   3. Classify and define polymerization processes.
   4. Name different methods of weft insertion for fabric formation.
   5. What are the objects of a carding machine?

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   6. What are the objects of warping?
   7. What are the basic ingredients of bleaching? State also different methods of bleaching.
   8. State the secondary motions of a loom.
   9. How crystallinity can affect the properties of a fibre.
   10. State the objects of dyeing. What kind of dye is chosen for polyester fabric?

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SECTION-B

2. Give a brief classification of manmade fibres citing example of each.
3. Write a short note on three types of finishing imparted to a fabric.
4. With the help of a suitable flow chart give the machinery requirement for producing 40° N, cotton yarn. Also state the object of mixing in yarn manufacturing process.

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5. Write a comparative assessment of the properties of woven and knitted fabric. Also state a few application fields of nonwoven fabrics.
6. Enumerate the flow chart for printing of fabric. Also give the flow chart weaving preparatory process.

SECTION-C

6. Why trash removal from fibre is important? State the objects of each machine to produce a combed yarn from baled cotton.
7. 1. Write a short note on entrepreneurial scopes for textile technologists.

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   2. Discuss the basic requirements of fibre forming polymers.
8. 1. Give an estimate of weaving preparatory stages mentioning the objects of each.
   2. Write a short note on polyester cotton blended fabric dyeing, giving detail of process sequence. Also give the justification of your answer.

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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.