Download GTU BE/B.Tech 2018 Winter 7th Sem Old 172901 Modern Spinning Technology Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (OLD) EXAMINATION — WINTER 2018

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Write in brief about Siro spinning along with a neat sketch. 07
(b) Explain why rotor spinning is not economically suitable to spun finer count? 07

Q.2 (a) Explain the working of DREF 3 and DREF 2000 friction spinning system with neat sketches. 07

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OR

(b) Describe wrap spinning system with a neat sketch. 07

Q.3 (a) Explain any Twistless spinning system working on principle of permanent adhesion with neat sketch. 07
(b) Describe ROCOS spinning system with a neat sketch. 07

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OR

Q.3 (a) Briefly explain integration of straight and hooked fiber into yarn in rotor spinning system. 07
(b) Discuss the problem of rotor deposit in rotor spinning. How it will influence yarn quality in rotor spinning. 07

Q.4 (a) Write short note on the following: (i). Spinning in coefficient, and (ii). Maximum spinning time. 07
(b) List out the features of G 30 ring frame machine. 07

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OR

Q.4 (a) Explain how yarn properties are influenced by Compact spinning system. 07
(b) Discuss advantages and disadvantages of hollow spindle spinning. 07

Q.5 (a) Describe features of Trutzschler BDT 020 spinning line. 07
(b) Describe parafill spinning system with a neat sketch. 07

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OR

Q.5 (a) What are the advantages and disadvantages of high rotor speed in rotor spinning? 07
(b) Discuss the major limitations of air jet spinning. 07

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