Yarn Manufacturing-II exam (YF 307) from BUTEX affiliated colleges' 2020 Level-3 Term-I finals. Covers jute yarn process flows, batch selection, spreader principles, jute versus cotton carding, flyer spinning frame production numericals, and open-end spinning limits.
Level-3 Term-I, Final Exám-2020
Subject: Yarn Manufacturing-II (Code: YF 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 process flow chart of jute yarn manufacturing.
(b) What is batch? Mention the factors considered for batch selection.
(c) Write down the working principle of jute spreader machine.
[2+4+6=12]
2. (a) Write down the differences between jute carding and cotton carding machine.
(b) Why two types of carding machine are used for jute? Explain.
(c) Write down the definition of:
(i) Break (ii) Nip (iii) Pitch of faller (iv) Lead%.
[4+2+6=12]