Two Yarn Manufacturing-II papers (YE 307) from BUTEX affiliated colleges' 2023 Level-3 Term-I finals. Questions cover jute softening and drawing machines, Murata air jet spinning, rotor mechanisms, polyester processing settings, and slub and compact yarn production.
Q1
Level-3 Term-I, Final Exám-2023
Subject: Yarn Manufacturing-II (Code: YE 307)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Write down the flow chart of jute yarn manufacturing.
(b) Discuss the working principle of jute softener machine with neat sketch.
(c) What are the differences between spreader and softener machine?
[3+4+5] = 12
2. (a) Write down the objects of jute draw frame.
(b) Describe the working principle of jute second draw frame.
(c) Write down the properties of jute drawn sliver.
Q2
Level-3 Term-II, Final Exám-2023
Subject: Yarn Manufacturing-II (Code: YE 307)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Classify jute fiber and write down the fibre composition of jute fibre.
(b) What is emulsion and why emulsion is applied on jute fiber during jute processing?
(c) State the working principle of the jute softener machine.
[5+4+3 = 12]
2. (a) Prepare a batch for producing 10 lbs./ spindle hessian weft yarn.
(b) Describe the ‘OD’ automatic batch mixer machine with working principle.
(c) Find out the production (lb) per shift of 10 flyer spinning machine from the following particulars: No of flyer/machine = 100, Flyer r.p.m = 3500, TPI: 3.3, yarn count = 8 lb/spindle and efficiency: 80%.
[3+5+4 = 12]
3. (a) Differentiate among 1st, 2nd and 3rd Draw Frame.