Long Staple Spinning exam (YE 303), 2023 Level-3 Term-I, from BUTEX affiliated colleges. Jute-focused questions cover grading systems, batch selection, breaker versus finisher cards, spreader working principles, and sliver and production calculations.
Level-3 Term-I, Final Exám-2023
Subject: Long Staple Spinning (Code: YE 303)
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) What do you mean by jute grading? Describe the different types of jute grading process.
(b) Define batch and write about the factors considered for batch selection.
(c) Discuss about the various defects of jute fiber.
[5+4+3 = 12]
2. (a) Define Dollop weight and Clock length.
(b) Explain the differences between breaker card machine and finisher card machine.
(c) Why two types of carding machine are used in jute spinning?
(d) Find out the production per shift in metric ton of a breaker card machine from the following information given below: Surface speed of delivery roller 18 yds/min, Clock length 13 yds, Dollop weight 32 lbs, Draft 10, Efficiency 75% and Wastage 3%.
[2+4+2+4 = 12]
3. (a) Softener is essential for cutting process, explain.
(b) What is piling? Why piling is necessary for emulsified jute?