Yarn Manufacturing-I exam (YE 213) from BUTEX affiliated colleges' 2024 Level-2 Term-I finals. Questions address combed yarn process flows, blow room cleaning efficiency numericals, carding action zones with sliver count calculations, and draw frame draft constants.
Level-2 Term-I, Final Exám-2024
Subject: Yarn Manufacturing-I (Code: YE 213)
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 is CVC yarn? Differentiate between carded and combed yarn.
(b) Is it possible producing consistent quality cotton yarn without proper bale management? Explain your arguments.
(c) Sketch process flow chart of 30 Ne combed yarn production.
[3+5+4 = 12]
2. (a) What are machine used in blow room?
(b) Describe briefly working in the blow room in used for both opening & cleaning?
(c) Egyptian cotton with 6% trash was processed in a Blow room and then in carding m/c which produces sliver containing 0.4% trash of the cleaning efficiency of carding m/c is 75%. Find out the cleaning efficiency of the blow room line.
[3+5+4 = 12]
3. (a) “Cloud carding is half spinning”-justify this statement.
(b) Illustrate major action zone of carding machine with relative speed and directions.
(c) What is Card Clothing? Why metallic card clothing is used in cylinder?