FABRIC MANUIFACTURE - I
(MCQ : MODULE 6 - SIZING 2)
Question 1: High pressure squeezing in conjunction with high paste concentration is aimed at
Increasing the dry pick-up (add on) Laying the hairs more closely to the body of the yarn Lowering energy consumption Improving the yarn strength
Question 2: For attaining higher wet pick up in sizing
Hardness of the top squeeze roller should be increased Both the squeeze roller should be metallic Top roller should be metallic Hardness of the top squeeze roller should be decreased
Question 3: With respect to normal starch, thin boiling starch can
Show same viscosity at lower concentration Show same viscosity at higher concentration Require higher amount of water evaporation in drying Show similar concentration-viscosity relationship
Question 4: 100 kg of bone dry warp sized to a dry pick up (add on) of 8% and dried to an overall moisture content of 10% would finally weigh
118 kg 118.8 kg 119 kg 120 kg
Question 5: Split drying system is employed on sizing machines for drying
Very wide warp sheet Warp sheet with very high wet pick up Very dense warp sheet Multi coloured warp sheet
Question 6: The temperature range of drying cylinders of a multi cylinder machine, sizing cotton yarns is
750-800 C 1400-1500 C 1800-2000 C 2000-2500 C
Question 7: Drying cylinders of sizing is coated with
Chromium Synthetic rubber PTFE Starch
Question 8: Convection drying of sized warp sheet results
More uniform drying but less energy efficiency than cylinder drying Less uniform drying but less energy efficiency than cylinder drying More uniform drying but more energy efficiency than cylinder drying Less uniform drying but more energy efficiency than cylinder drying
Question 9: Quality of sized yarn is not evaluated by
Cohesive power Loss in breaking elongation Abrasion resisatnce Uster unevenness value
Question 10: Pre wetting the warp yarn with water before sizing will
Increase the size add-on % Decrease the size add-on % Increase wet pick up Decrease loom efficiency
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