Common Data Questions
A cotton fabric has 25 ends per cm, 28 picks per cm, warp count 30 tex, weft count 15 tex, warp crimp 12%. The diameter of the yarn is given by; 4.44 x 10-3 (yarn tex/fibre density)1/2
Question 72 (Textile Engineering & Fibre Science)
The crimp (%) in weft yarn is
(A) | 1.03 |
(B) | 6.26 |
(C) | 10.26 |
(D) | 12.26 |
[Show Answer]
Option C is correct.
Given in the question-
Ends per cm(EPCM)=25
Picks per cm(PPCM)=28
Warp count=30 tex
Weft count=15 tex
Warp crimp=12%
The ratio of warp way modular length to sum of thread diameter=?
Let the warp way modular length=l1
Sum of diameter=D
Sum of diameter(D)=Warp diameter(d1)+Weft diameter(d2)
cm
cm
Similarily-
cm
cm
cm
cm
cm
Sum of diameter(D)=Warp diameter(d1)+Weft diameter(d2)
cm
cm
By formula-
Warp crimp%=(l1-P2) x 100/P2
Where,
P2 is the pick spacing=1/PPCM
P2=1/28
By formula-
Where h is the crimp hieght
Weft crimp percentage=10 (Approx) (Ans)