Assume that there is no compression of roving during winding and each coil of a layer is placed directly over the coil of the previous layer. A full roving bobb...

Determine the correctness or otherwise of the following Assertion [a] and Reason [r].[a]: As compared to parallel wound yarn packages, ring bobbins exhibit lowe...

In a drumdriven -winder, the grooved drum having a width of 20 cm is rotating at 1000 rpm. If the drum makes 5 revolutions per double traverse, the traverse spe...