Fabric Construction — DU B.Sc. (Prog.) Home Science Previous Year Question Papers

Attempt four questions in all. Read the questions carefully. Support your answer with the help of illustration wherever required. 1. (a) Define any five of the following : (b) (i) Shedding (iii) Reed (v) Leno weave (vi) Wales and Courses (vii) Gauge. Write short notes on any five of the following : (i) Types of Selvedges (iii) Herring bone and Pointed Twill (iv) Difference between warp knitting and weft knitting (v) Surface Figure weaves (vi) Knitting Defects (vii) Uses of non-wovens. 2. (a) What are the various steps that have to be undertaken in preparation of warp and weft yarns before weaving ? 8 (b) Describe the method of construction and types of "Dobby" and "Jacquard" fabrics. 3,4 (a) (b) Give a detailed classification of knitted fabrics. Explain various types of weft knit stitches and structures and give salient characteristics of each type. 10 Draw and label three types of knitting needles. Give reasons why knitted fabrics are more suitable for sportswear ? 5 (a) (b) Describe the working of various types of shuttleless looms. Discuss the advantages and limitations of shuttle and shuttleless looms. 10 Explain the various types and methods of construction of pile weave fabrics. 5 (a) (Shuttleless looms) (a) Discuss the various types of non-woven fabrics. List the steps in the production of non-woven fabrics and explain various methods of web formation in detail. 7 Explain in detail the production process of needle-punched non-woven fabrics and list their applications. 8 6. (a) (b) Define technical textiles. How are they different from conventional textiles ? Describe the agro-tech and meditech sectors of technical textiles in detail, including their applications and the types of fibres used. 9 Differentiate between integral knitted garments and fully cut knitted garments. 6