Textile Physics-1 exam (TE 207) from University of Chittagong's 2010 second-year finals, two hours and 40 marks. Includes elastic and work recovery, swelling derivations, thermal expansion of thermoplastics, heat of sorption, and crystallinity measurement by X-ray diffraction.
B.Sc in Textile Engineering
2nd Year Final Examination – 2010
Subject: Textile Physics – I (Code – TE 207 )
Time: 2 Hours | Total Marks: 40 |
Answer any four questions
1. a) Define elastic recovery and work recovery.
b) What is work of rupture ? Show how durability of a textile material increases for its high work of rupture.
c) What is creep? Distinguish between primary and secondary creep?
(2+5+3 =10)
2. a) What is meant by fibre swelling?
b) Prove that when = Volume Swelling, = Axial Swelling, = Area Swelling .
c) How will you measure the volume swelling ?
d) Why viscose swelling is greater than nylon swelling?
(1.5+3.5+3.5+1.5 = 10)
3.a) State the importance of flexural properties of textile fiber.
b) How can you minimize the frictional intensity of textile materials?