Modern Yarn Manufacturing exam (YE 401) from BUTEX affiliated colleges' 2024 Level-4 Term-I finals. Questions cover rotor, wrap, compact, air jet, and friction spinning systems with working principles and yarn property comparisons.
Level-4 Term-I, Final Exám-2024
Subject: Modern Yarn Manufacturing (Code: YE 401)
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) State the advantages of modern spinning system.
(b) Compare between conventional spinning and modern spinning.
(c) Write down about basic principle of yarn formation of open end spinning process with sketch.
(d) Discuss the functions of rotor spinning machine.
[2+2+5+3=12]
2. (a) What is rotor groove? State the effect of rotor groove on yarn characteristics.
(b) Show the graphical representation of relationship between rotor speeds and yarn strength.
(c) Discuss about the automation of rotor spinning.
(d) Explain the influence of rotor diameter on rotor speed and yarn count.