Yarn Manufacturing-II exam (YE 307/323, YME 323) from BUTEX's 2024 Level-3 Term-I finals. Covers ring spinning cost reduction, vortex versus rotor yarn structures, blow room blending methods, polyester-cotton blend flows, and jute breaker card draft numericals.
Level-3 Term-I, Final Exám-2024
Subject: Yarn Manufacturing-II (Code: YE 307/323, YME 323)
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) Explore the cost reduction possibilities in the ring-spinning system.
(b) Explain two technological limitations behind the poor quality produced in the conventional ring frame.
(c) What are the limitations of D/F blending? How can the issue be solved?
[5+4+3=12]
2. (a) Explain the differences in the structure of vortex yarn and rotor spun yarn from their twisting mechanism.
(b) Describe the yarn manufacturing technique where production is independent of its yarn count.
(c) Describe the different methods of blending in the blow-room line.
[5+4+3=12]
3. (a) List the major advantages and limitations of yarns produced from rotor, vortex and friction systems.