The traveler moves at constant speed during winding of one chase



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Quiz No. 3


  1. The traveler moves at constant speed during winding of one chase. True/False.




  1. Which of the following components is traversed through maximum distance in a ring frame?

A. Lappet rail B. Spindle rail C. Ring rail D. BCR rail


  1. The end breakage is maximum within a chase length when

  1. the ring rail is at the bottom most position C. the yarn tension is maximum

  2. the ring rail is moving up D. the ring rail is moving down



  1. The zone where the yarn is weakest in the spinning zone is

  1. The zone between ring and the bobbin

  2. The zone between the lappet and ring

  3. The zone between the delivery drafting roller and the lappet

  4. Yarn already wound on the bobbin




  1. The purpose of having round cop bottom is

  1. To facilitate smooth unwinding of coils without slough off

  2. To increase the cop content

  3. To have higher spindle speed

  4. To have better grip of the bobbin with the spindle




  1. Usually the spindle speed is kept at maximum while winding happens in

  1. Top of the spindle

  2. Bottom of the spindle

  3. Middle of the spindle

  4. Both middle and top portions of the spindle




  1. Within one chase length, the tension in the yarn balloon is minimum when the winding happens in

  1. The neck (top) of the chase

  2. The shoulder (bottom) of the chase

  3. When the ring rail is moving up

  4. When the ring rail is moving down




  1. The most critical aspect in ring spinning which limits the spindle speed is

  1. The drafting system

  2. The overhead cleaning system

  3. The builder mechanism

  4. The ring and traveler system




  1. The reason for using different ‘spacers’ in the ring frame is

  1. To change the spacing between the neighboring rovings

  2. To accommodate different twists in the twisting system

  3. To accommodate different thicknesses of fibre strands in the drafting system

  4. To change the spacing between different drafting rollers




  1. Traversing of the fibrous strand during roller drafting helps in

  1. Improving the drafting behavior of the fibres

  2. Reducing the wear of the drafting rollers

  3. Improving the twist insertion in the yarns

  4. Reducing the end breakage rate during spinning.


Answers:


    1. False

    2. C

    3. D

    4. C

    5. B

    6. C

    7. B

    8. D

    9. C

    10. B



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