Two Textile Physics-II papers (YME-329) from BUTEX affiliated colleges, a two-hour 70-mark Level-3 exam. Questions cover static electricity, fibre migration measurement, idealized yarn geometry proofs, Peirce cloth models, and jamming conditions.
Q1
Level-3 Term-I, Final Exám-2023
Subject: Textile Physics-II (Code: YME-329)
Time: 2.0 Hrs. Full Marks: 70
(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) Define static electricity. How does static charge build-up?
(b) State the problems created due to static electricity in textiles.
(c) Describe the method of minimizing static problems.
[6+6+5.5 = 17.5]
2. (a) Define Flexural rigidity.
(b) What is fiber migration? Explain the parameters on which fiber migration depends.
(c) Describe Riding’s experiment to measure fiber migration.
[4+6+7.5 = 17.5]
Q2
Level-2 Term-II, Final Exám-2023
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) Compare between amorphousness and crystallinity.
(b) Prove that nλ = 2dsinθ.
(c) Write the advantages and disadvantages of “x-ray” diffraction method.
[3+6+3 = 12]
2. (a) How many methods of fiber Structure investigation are available?
(b) Why natural fabric is more comfortable than synthetic fabric?
(c) Write down the advantages and disadvantages of IR method.
[3+4+5 = 12]
3. (a) State the Amonton’s law of friction.
(b) Establish a relation among refractive index, density and swelling.
(c) State different methods of determination of co-efficient of friction.