For producing semi combed yarn, the percentage of noil removed by the combing process is

Usually the wire print density of top comb is

The range of draft required to convert the silver into yarn is

During the bobbin winding in a roving frame, the bobbin rotation rate must be...........while the increase in the package diameter.

Soft covering of top rollers in ring frame leads to 

For woolen and worsted spinning system, the type of ring used is