Textile Physics-1 paper (TE 207) from University of Chittagong's 2011 second-year finals, two hours and 40 marks. Questions cover heat of sorption and wetting, swelling proofs, infrared absorption methods, torsional rigidity, dichroism, and luster factors.
B.Sc in Textile Engineering
2nd year final Examination 2011
Subject : Textile Physics – 1 (Code TE 207)
Time – 2 hrs. | Total marks : 40 |
Answer any Four Questions
1. a) What are meant by heat of sorption, heat of absorption and heat of wetting.
b) Explain why the heat of wetting of wool fibre is higher than that of other fibres.
c) Discuss the effect of thermal transition on heat setting of thermoplastic fibre.
d) Mention the factors those influence the melting temperature.
(3+2+3+2)
2. a) What is the phenomenon of swelling?
b) Prove that
c) Write the methods of investigation of fiber structure.
d) Elaborate the technology of infra-red absorption method.