CS/B.Tech(TT-New))/SEM-4/TT-402/2012
2012
FABRIC FORMATION-I
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 :
10X1 = 10
i) Gain in precision winding be defined as
a) g = yarn diameter/sin (angle of wind)
b) g = yarn diameter/cos (angle of wind)
c) g = yarn diameter/sin (2 angle of wind)
d) g = yarn diameter/tan (angle of wind).
ii) In random winding the winding ratio
a) decreases as the package builds up
b) increases as the package builds up
c) remains same as the package builds up
d) increases during patterning as the package builds
up.
iii) With the desirable chase angle ( ), the empty pirn
diamter ( d ) and the maximum yarn diameter ( D )
being known for a specific yarn, if is possible to
determine the chase length ( C ) as
a) C = tan – ( D – d )/2
b) C = 2 tan – ( D – d )/2
c) C = tan – ( D – d )
d) C = tan – 2 ( D – d ).
iv) For direct warping a major problem in creeling is the
amount of time required at the end of a run regarding
replenishment and in all the creel systems available the
most efficient one for short runs is
a) duplicate creel b) magazine creel
c) truck creel d) reversible creel.
v) To achieve the incline or wedge in section warping, it is
necessary for either the mill or the headstock to move
sideways. The rate at which this movement occurs is
dependent on the angle of incline ( ), the thread