Textile Calculations: Cover Factor (MATH401)
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Questions and Answers

What is the number of threads in a weave repeat for a 3/1 twill weave?

  • 5
  • 6
  • 3
  • 4 (correct)

    • What is the Weave Factor for a 2/1 twill weave?

  • 1.34
  • 1.26
  • 1.44
  • 1.16 (correct)

    • What is the formula used to calculate the KC value?

  • 28 x R + (0.732 x 2)
  • 28 x R - (0.732 x 1)
  • 28 x R - (0.732 x 2)
  • 28 x R + (0.732 x 1) (correct)

    • What is the Weave Factor for a 4/1 satin weave?

    <p>1.34</p> Signup and view all the answers

    What is the number of intersections in a weave repeat for a 3/1 twill weave?

    <p>2</p> Signup and view all the answers

    What is the Weave Factor for a 1/1 plain weave?

    <p>1.00</p> Signup and view all the answers

    What is the definition of cover factor in textile calculations?

    <p>The ratio between the number of yarns per inch and the square root of the yarn count</p> Signup and view all the answers

    What is denoted by Wp.C.F and Wt.C.F?

    <p>Warp Cover Factor and Weft Cover Factor</p> Signup and view all the answers

    What is the formula to calculate the Cloth Cover Factor (K)?

    <p>(Wp.C.F + Wt.C.F) / 28</p> Signup and view all the answers

    What is the unit of Ends per inch (n1) and Picks per inch (n2)?

    <p>Inch^(-1)</p> Signup and view all the answers

    What is the purpose of knowing the maximum EPI for a particular count?

    <p>To decide the weave possibility of a given construction</p> Signup and view all the answers

    What is the value of Cloth Cover Factor (K) for a fabric with 40x40 / 120x70 construction?

    <p>22.54</p> Signup and view all the answers

    What is the relationship between contraction and density in fabric weaving?

    <p>Contraction is directly related to density</p> Signup and view all the answers

    What is the formula to calculate warp contraction?

    <p>Warp Contraction = PPI x 3 Weave Factor x Weft Count</p> Signup and view all the answers

    What is the unit of measurement for reed count in the Stockport system?

    <p>Number of dents per 2 inches</p> Signup and view all the answers

    What is the formula to calculate reed count in terms of EPI and weft contraction?

    <p>Reed Count = (EPI x Weft Contraction %) / (1 + Weft Contraction %)</p> Signup and view all the answers

    What is the purpose of the weave factor in calculating contraction?

    <p>To adjust the contraction value for different weaves</p> Signup and view all the answers

    What is the unit of measurement for ends per inch (EPI)?

    <p>Number of ends per inch</p> Signup and view all the answers

    What is the formula to calculate the minimum fabric thickness?

    <p>tmin (mm) = d1 + d2</p> Signup and view all the answers

    What is the unit of measurement for warp and weft diameters in the fabric thickness formula?

    <p>Millimeters</p> Signup and view all the answers

    What is the formula to calculate the tape length in yards?

    <p>Tape Length (yards) = Cloth Length (yards) × 1.06</p> Signup and view all the answers

    What is the yarn rate in rupees per pound?

    <p>Rs. 150</p> Signup and view all the answers

    What is the formula to calculate the yarn cost?

    <p>Yarn Cost = Yarn Weight × Yarn Rate</p> Signup and view all the answers

    What is the total weight of the fabric in pounds?

    <p>0.596</p> Signup and view all the answers

    What is the formula for calculating reed width?

    <p>Reed Width (Reed Space) = Cloth Width + Weft Contraction %</p> Signup and view all the answers

    What does EPI stand for in the context of the provided text?

    <p>Ends Per Inch</p> Signup and view all the answers

    What does the term 'denting of yarns' refer to in relation to reed width?

    <p>Positioning yarns in the reed</p> Signup and view all the answers

    In the context of the provided text, how is reed width typically related to cloth width?

    <p>Reed width is greater than the cloth width</p> Signup and view all the answers

    What is the relationship between EPI and Weft Contraction Percentage in the provided text?

    <p>EPI increases as the weft contraction percentage decreases</p> Signup and view all the answers

    What is the purpose of calculating reed width in textile calculations?

    <p>To ensure proper denting of yarns in the reed</p> Signup and view all the answers

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