Yarn Manufacturing-II paper (YE 307) from BUTEX affiliated colleges' 2022 Level-3 Term-I finals. Questions cover jute yarn flows and grading, draft and doubling effects, breaker card production numericals, end breakage causes, and rotor spinning automation.
Level-3 Term-I, Final Exám-2022
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 the process flowchart of jute yarn manufacturing.
(b) Discuss about the various defects of jute fibre.
(c) Which type of jute fibre is best for jute yarn and why?
(d) Mention the different types of jute grading.
[2+3+3+4=12]
2. (a) Why pilling is necessary for emulsified jute?
(b) What are draft & doubling? Write the effects of draft & doubling on sliver quality.
(c) Why two types of carding machine are used in jute spinning?