ARUNACHAL PRADESH PUBLIC SERVICE COMMISSION
TEXTILE HANDICRAFTS: PAPER-I

Time 3(Three) Hours Full Marks 100
INSTRUCTIONS
1. Answer all the questions.
2. The question paper contains 10 questions. Questions 1 7 are having internal choice.
3. The figures in the margin indicate full marks for the questions.

Describe the effects of regain on fibre properties. 4
State the fibre micro-structure that influences the tenacity of textile fibres. 3
Why natural protein fibres absorb more moisture than synthetic fibres? 3
State the properties of any two commercially available high performance fibre. 4
Write about the chemical properties of polyester fibre. 3
Explain the microstructures of fibers that affect the thermal properties of natural and regenerated fibres. 3

Discuss about any three physical properties of viscose fibre. 3
Demonstrate the broad classification of texturized yarns. 3
Explain the mechanism of diffusion of water vapours during the conditioning of a mass of hygroscopic fibres. 4

State the types of heat setting with example. 3
Exemplify the advantages of integrated continuous process over the conventional nylon manufacturing process. 3
Explain the effect of drawing operation carried on filament yarn. 4

Write the characteristics differences of yarn produced by dry doubling and wet doubling. 2
Draw the longitudinal line diagrams of the yarn structures produced by ring, rotor, air-jet and wrap spinning system. 4
Describe the principle of false twisting which is used in producing 'Fasciated Yarns'. 4


Mention any two effects on yarn structure and quality by rotor diameter in rotor spinning yarn.
Explain the principle of operation of self-twist spinning yarn.
Compare the ring and rotor spun yarn characteristics in relation to strength, evenness, hairiness and abrasion resistance. 2 4 4

Q.6 Mention two aspects that differs gripper projectile from conventional automatic loom. State the principle of producing spunbond nonwoven fabric. Explain three dry-laid web production techniques used for production of non-woven fabric. 2 2 6
Q.7 What are the main factors that limiting the wider use of water jet loom? State the characteristic features and properties of a single jersey structured knitted fabric. Compare the performance of ring spun yarn, open-end yarn, air-jet spun yarn, mono-filament yarn and textured yarns in Air-jet weaving. OR State the desired properties of an ideal binding agent. Compare tricot raschel knitting in terms of needles used, properties of fabric and versatility. Mention four differences between weft and warp knitted fabrics. 2 3 5 3 3 4
Q.8 What are the characteristics of Reactive dyes? Explain the application of Reactive dyes on cotton by hot method. What is diazotization in case of Ingrain dyes? 2 5 3
Q.9 What is resist style of printing? What is the function of furnisher roller in Roller printing machine? Explain how a design is produced by Screen printing method. 2 2 6
Q.l0 Classify the dyes according to application. What is semi-permanent finish? Give an example. Explain the steps involved in resin finishing on cotton. 3 2 5


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