**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 71 (Textile Engineering & Fibre Science)

The ratio of warp way modular length to sum of thread diameter is

(A) | 0.119 |

(B) | 0.19 |

(C) | 1.19 |

(D) | 11.9 |

**[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

cm

Now,

The ratio of warp way modular length to sum of thread diameter=

The ratio of warp way modular length to sum of thread diameter=

The ratio of warp way modular length to sum of thread diameter=1.19 (Ans)