If a ring yarn produced from a roving with a CV value of 4% has an uneveness of CV = 13.6%, then the CV added by the ring spinning process is

The approximate number of fibres in a card silver in between ..........and ............

The fibres in card silver are relatively

For fines silvers, what is the relation between the diameter of trumpet bore (d) and linear density in tex ?  

The yarn relationship between yarn diameter and twist is 

The blending technique that gives homogeneous mixing of fibre is