Textile Physics paper (YE 209) from BUTEX affiliated colleges' 2024 Level-2 Term-I finals. Covers CRL and CRE loading, swelling types with derivation, static charge measurement, birefringence by retardation, yarn packing, and Peirce cloth geometry assumptions.
Level-2 Term-I, Final Exám-2024
Subject: Textile Physics (Code: YE 209)
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 differences between yield point and breaking point.
(b) Why natural fabric is more comfortable than synthetic fabric?
(c) Write short note on CRL and CRE.
[3+4+5 = 12]
2. (a) What is swelling? Briefly explain different types of swelling.
(b) Derive the relation: where = volume swelling, = Area swelling and = Axial swelling.
(c) Why viscose swelling is greater than nylon swelling?
[(1+3)+4+4 = 12]