CS/B.TECH(TT)/SEM-6/TT-606B/2012
2012
NEW GENERATION FIBRE
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct alternatives for the following : 10 × 1 = 10
i) Which of the following fibre is composed of 'rigid-rod'
polymer chain ?
a) Carbon fibre b) Nylon66 fibre
c) PET fibre d) Aramid fibre.
ii) UHMWPE fibre is made of
a) Melt spinning b) Dry spinning
c) Gel spinning d) Wet spinning.
iii) M-type aramid fibre is
a) Kevlar b) Nomex
c) Aromatic polyester d) Nylon6.
iv) Formation of lyotropic-tropic crystals at particular
temperature depends upon
a) temperature of the system
b) polymer concentration of the system
c) at a particular stretch ratio
d) none of these.
v) If the fineness of micro-fibre increases then the specific
surface area will
a) increase
b) decrease
c) remain constant
d) first increase then decrease.
vi) Lyocell is a
a) regenerated cellulosic fibre