The mean range of the count test results on a 50s cotton yarn is 3.4. Four bobbins are tested in each sample. Calculate the percentage mean deviation.

Find out the equivalent worsted count of yarn, if the yarn is having 20 tex.

40 S yarn cone package fixed in the warpe's creel has a yarn mass of 1.5 kg. If the  warper's beam are produced for a warp length of 7800 m, calculate number of doffs for which the cone will supply the yarn.

Tip bunch in the pirn is given for

In case of multi phase, weaving, the maximum weft insertion rate is around

Dobby shedding mechanism control upto..........heald frames than tappet shedding mechanism.