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2003 Course Fiber Technology (Elective)

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Total No. of Questions : 12] [Total No. of Pages : 3 [3764] - 363 P 1595 B.E. (Polymer) FIBER TECHNOLOGY (2003 Course) (Elective) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answers to Section-I and Section-II should be written on separate answer books. 2) Solve 3 questions from Section-I and 3 questions from Section-II. 3) Neat diagrams should be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. 6) Use of electronic pocket calculator is allowed. SECTION - I Q1) a) b) c) d) Briefly explain unique properties of Synthetic fibers. [5] Why polyester fabric/clothes do not need ironing while cotton fabrics/ clothes do? [2] What are the various Spinning techniques used in Fiber manufacture? With neat sketch, explain any one in detail. [6] What are the advantages and disadvantages of High Speed Spinning process? [5] OR Q2) a) b) c) d) What are the criteria for polymers to form fibers? [5] Explain in detail Classification of Fibers . [6] Compare between Wet and Dry Spinning processes. [4] Enlist 3 important coagulation and spinning variables directly related to fiber formation by Wet Spinning process. [3] Q3) a) What are the various sources of Natural fibers? Give at least one example [4] of each. Mention the advantages of Terephthalic acid (TPA) over Dimethyl terephthalate (DMT) in manufacture of polyethylene terephthalate (PET) polymer. [6] Write a short note on Side Reactions during PET Synthesis . [6] b) c) OR P.T.O.

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