GATE (TF) Textile 2022 Question Paper Solution | GATE/2022/TF/46

Question 46 (Textile Technology & Fibre Science)

Nine slivers having same mean linear density are doubled on a drawframe. If the standard deviation of linear density of each sliver is 0.3 ktex, then the standard deviation (ktex) of linear density of the doubled sliver (correct up to 1 decimal place) is _.

Given in the question-

Stadard deviation of single sliver()=0.3 ktex

Number of single slivers()=9

Number of double sliver()=81

Now by formula,

N(Number of samples) is directly proportional to the square of CV(Coefficient of variation)

and formula of

(Ans)