QUESTION FOR COMPREHENSIVE VIVACollected by Emdad Sarker , 28 th batch (01717 576576)

POLYMER SCIENCE 1. What are monomers and polymers?2. What is monomer residue?3. What is repeat unit of a polymer chain?4. What is the difference between homopolymer and co polymer?5. What is branched polymer?6. What is dendrimer?7. What is the difference between thermoplastic and thermosetting

polymer?8. What are blocked polymers?9. What are graft polymers?10. Difference between isotactic, syndiotactic and atactic polymers?11. What is combed polymer?12. What are star polymers?13. What is polymerization and how it can be classified?14. What is chain polymerization?15. What are the steps of polymerization?16. What is free radical polymerization?17. What is the mechanism of free radical polymerization?18. Differentiate between anionic and cationic polymerization19. What are free radicals? How it can be produced?20. What is chain transfer reaction?21. What is CTA?22. What is copolymer?23. What is living polymer?24. What is step or condensation polymerization?25. What is self-condensation?26. What is AA-BB type polymerization?27. What are the conditions of step polymerization?28. What are the methods or techniques of polymerization?29. What is gas phase polymerization?30. What is liquid phase polymerization?31. What are the advantages and disadvantages of solution

polymerization?32. What are the advantages of bulk polymerization?

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33. What are the ingredients used in an emulsion polymerization/34. What is interfacial poly condensation?35. What is the basic principle of interfacial poly condensation?36. What do you mean by monodisperse and poly disperse system?37. What is index of polydispersity?38. What is end group analysis?39. Why is osmometry?40. What is Z average molecular weight of polymer?41. What is molecular weight distribution curve?42. What are the methods used to calculate Mn and Mw?43. What do you mean by crystallinity and amorphousness in a

polymer?44. What is Tg and Tm?45. What are the relations between Tg and Tm?46. What is Tf?47. What is Tg of rubber, nylon and polyester?48. What is crystallinity of polymer?49. What is amorphousness of polymer?50. What is index of crystallinity?51. What are the factors affects crystallinity in a polymer?52. What are the inter-molecular forces in a polymer?53. What is

a.H-bonding b. salt linkage c. ionic bond d. Van deer wale forces e. hydrophobic interaction f. NMR g. SEM h. AFM i. Polymer degradation

54. How is polymer characterized?55. What are the types of polymer degradation?56. What is

a. Chain end degradationb. Random degradationc. Thermal degradationd. Mechanical degradatione. Oxidative degradationf. Hydrolytic degradation

57. What are anti oxidants?58. What are the factors required for a polymer to form a fiber?

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TEXTILE RAW MATERIALS (PART – I)

1. What is fiber?2. What is filament?3. What is textile fiber?4. Classify the textile fiber in broad sense5. Give some examples of seed fiber, leaf fiber, regenerated fiber and

synthetic fiber6. Mention some important/ major cotton cultivated countries7. What is upland and American pima cotton?8. Classify the cotton fiber on the basis of staple length9. Mention the range of length, diameter and spinning limit of cotton

fiber10. What are the main elements of cotton fiber?11. What types of impurities of are found in raw cotton?12. Mention some grading systems of raw cotton fiber13. What are cotton linters and uses of linters?14. Mention the average strength and MR% of cotton fiber15. What is the effect of acids and alkali on cotton fiber?16. What is ginning and it’s type?17. What do you know about Bangladeshi cotton?18. What types of faults are found in raw cotton?19. Mention the average length of jute fiber20. Mention the main elements and their amount jute fiber21. Mention the average strength and MR% of jute fiber22. What is the effect of acids and alkali on jute fiber?23. What types of defects are found in jute fiber?24. What are the uses of jute fiber?25. What is retting?26. What types of reagents are used for chemical retting?27. What are the main elements of flax fiber?28. Mention the strength and MR% of flax fiber29. What are the effects of acids and alkali on flax fiber?30. What types of dyes are used for cotton, jute and flax fiber?31. What is the end use of flax fiber?32. What are the uses of Ramie, Hemp, kemi and sisal?33. Mention the average strength of wool fiber

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34. What are the main elements of wool fiber?35. Mention the major wool producing countries36. What are the effects of acids and alkali on wool fiber?37. What types of dyes are used for wool dyeing?38. What is the end use of wool fiber?39. Mention the natural filament40. Mention the major silk producing country41. How can you express the fineness of silk filament?42. Mention the average length and strength of silk filament43. What is the effect of acids and alkali on silk?44. What is the end use of silk?45. What types of dyes are used for silk dyeing?

TEXTILE RAW MATERIALS (PART-II)1. What are chemical fibers?2. How chemical fibers are classified?3. What are natural polymers based chemical fibers?4. What are the spinning methods of chemical fibers?5. What is dry spinning?6. What is Melt spinning?7. What is Wet spinning?8. What are the solvents generally used in dry spinning?9. What are the coagulants used in wet spinning?10. What is spinneret? Why it is used?11. What is plastisizer and why it is used in spinning chemical fibers?12. What is spin finishes?13. What are the functions of spin finishes in production chemical

fibers?14. What is drawing and stretching of chemical fibers?15. What is the difference between cold draw and hot draw?16. What is texturing?17. What are the objectives of texturing?18. What is false twist method for texturing?19. What are the available methods for texturing?20. What is regenerated fiber?21. Classify different viscose fibers22. Mention chemistry involved in production of viscose rayon?23. What raw materials are available for viscose rayon production?

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24. What is pulp and how it is prepared?25. What type of spinning is suitable for viscose rayon?26. What ingredients are used in spinning bath of viscose rayon

production?27. What is polynosic?28. What is HWM viscose rayon?29. What are the tests for ripening viscose? How it can be classified?30. How are the physical properties of viscose rayon?31. How are the chemical properties of viscose rayon?32. How is viscose rayon affected by water, sunlight? 33. What are the uses of viscose rayon?34. What is the polyester fiber according to FTC?35. Difference between Dacron and Terylene?36. What is Tory?37. What are the methods available for spinning polyester fibers?38. What is Kodel 200?39. How are the physical and chemical properties of polyester?40. How is polyester affected by temperature and sunlight?41. What are the uses of polyester?42. What are polyamide fibers?43. How is polyamide fiber classified?44. What is Nylon 6,6 and Nylon 6?45. What are aramids fibers?46. How are the physical and chemical properties of nylon fibers?47. How do heat and organic solvent affect nylon fibre?48. What are the applications of polyamide fibers?49. What is acrylic and mod-acrylic fiber?50. What is suitable spinning method for acrylic fiber and why?51. How are the physical and chemical properties of acrylic fiber?52. How is acrylic fiber affected by temperature?53. What are the uses of acrylic fibers?54. What is acetate and acetate fiber?55. Difference between acetate and di-acetate fiber56. Mention chemistry involved in production of acetate and diacetate

fibers57. How are the physical and chemical properties of acetate and

diacetate fibers?58. How is acetate fiber affected by moisture?

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59. What are the uses of diacetate fibers?60. What is polyurethane fiber? 61. What are the methods for spinning polyurethane fiber? 62. How are the physical and chemical properties of polyurethane fiber?63. How do organic solvent and heat affect polyurethane fiber?64. What are the uses of polyurethane fiber?65. What is glass fiber?66. What is E glass and C glass?67. What are the ingredients used in preparation E glass?68. What are the spinning methods of glass fiber?69. What are the uses of glass fiber?70. What is bi-component fiber?71. How is bi-component prepared?72. What are the objectives of preparation bi-component fiber?73. What are the uses of bi-component fiber? 74. What are PVC, Vinyon, Dynel, PVA & Carbon fiber?

Wet processing technology1.What are the problems associated by hard water in desizing / scouring/ bleaching/ mercerizing/ dyeing / printing / finishing?2.What are the methods of water softening?3.Classify water according to hardness.4.What is hardness of water?5.What is permanent hardness of water?6.What is temporary hardness of water?7. What is soap?8.Which oils are used in soap manufacturing process?9.What is detergent?10.What are the advantages and disadvantages of non-ionic detergent?11.Classify detergent.12.What is singeing?13.What are the objects of singeing?14.Name some singeing machines15.What is desizing?16.What types of sizes commonly used for sizing?17.Name some natural gum sizes or synthetic sizes18.What are the methods of desizing?19.What are the objects of desizing?

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20.Define scouring, objects of scouring21.How can you measure the quality of scouring?22.What is keir? What are the types of kier?23.What are the precautions to be taken for kier boiling process?24.Which builders are used in scouring process and this purposes?25.Define bleaching and object of bleaching26.Name some bleaching agent27.What are the steps of continuous bleaching process?28.Which bleaching agent is suitable for cotton bleaching?29.Name some oxidizing and reducing bleaching agent30.What is dye or dyestuffs?31.What is pigment?32.What are the differences between dyes and pigments?33.What is fastness?34.What is color fastness? Give some example35.What is a. water fastness? b. Wash fastness

c. Perspiration fastnessd. Rubbing fastnesse. Light fastnessf. Sea water fastnessg. Chlorinated pool water

36.What do you know about primary color, secondary color, and tertiary color?37. What are the primary colors in subs tract / pigment theory of color?And in additive / light theory of color 38. Classify dyes on the basis of physical form and application method39.Give some examples of water insoluble dyes and water-soluble dyes40. What is concentration gradient?41. What is absorption isoform?42.What is auxochromo, chromophore group in dye stuffs?43.Give some examples of hydrophilic and hydrophobic fibres?44.On which factors dye selection depends?45.Classify dyeing machines.46.Give some examples of fibre dyeing m/c, yarn dyeing m/c and fabric dyeing m/c47.Give some advantages and disadvantages of jet, jigger and winch dyeing m/c

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48. What are the methods of semi-continuous and continuous dyeing m/c?49.Why direct dye is called direct cotton dye and substantive dye?50.What fibres are mainly dyed with acid dye?51.Why acid, vat, direct, basic dyes are so called?52.What is vatting?53.Give some properties of direct, acid, basic and vat dye.54.What is printing?55.What are the styles of printing?56.What is thickener?57.What are the methods of printing?58.What are the advantages and disadvantages of block printing m/c, screen-printing m/c, rotary printing m/c, transfer printing m/c and stencil printing m/c?59.Difference between automatic flat bed screen-printing and rotary printing machine

1. What is pigment ?2. What are the properties of a good pigment?3. What is organic and inorganic pigment?4. What are the differences between dye and pigment?5. How are pigments classified?6. How is pigment worked as colorant?7. How is pigment applied for dyeing textiles?8. What are the advantages and disadvantages of pigment dyeing?9. What are the fastness properties of pigment dyed fabrics?10. How are the rubbing fastness properties of pigment dyed fabrics?11. Name some well-known ancient natural dyes with mentioning

sources.12. Mention the stages of textile materials in which natural dyes can be

applied.13. Name the equipments necessary for home dyeing and very small-

scale commercial dyeing in case of natural dyes.14. What do you understand by natural Mordants?15. What are the categories of natural dyestuffs?16. What is synthetic Mordant?

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17. What is Alizerine?18. What are pre-metallised dyes?19. What is 1:1 & 2:1 metal complex dye?20. What are the fastness properties of pre-metallised dyes?21. What are the disadvantages of metal complex dyes?22. Why is dye aggregation?23. Why is connective diffusion?24. What is electrical double layer?25. What is adsorption, sorption, desorption and diffusion?26. What are the factors control rate of dyeing?27. What is dyeing kinetics?28. What is dyeing equilibra?29. What are the factors that influence level dyeing?30. What is pore model?31. What is free volume model?32. What is substantivity?33. What is affinity?34. What is chromophore group?35. What is auxochrome?36. What is partition co-efficient?37. What is emulsion thickener?38. What is oil in water emulsion?39. What is synthetic thickener?40. What are the advantages of synthetic thickener?41. What is print paste rheology?42. What is HLB? Mention the range of HLB43. What is half emulsion?44. How is screen-printing m/cs classified?45. How is flat screen prepared?46. What are the factors influence the penetration of paste through

screen?47. What is the squeeze systems used in flat screen-printing machine?48. How is printing quality influenced by the following factors: by the

stroke and by squeeze angle?49. Why is adhesive system used in a fully automatic flat screen-

printing m/c?50. What is rotary screen?

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51. What is the squeeze systems used in rotary screen-printing machine?

52. What are the advantages of rotary screen-printing machine?53. What is the fundamental mechanism of screen-printing?

SPECIAL WET PROCESSING ( 4th year)1. What is foam?2. What are the types of foam?3. Why foam may be used for wet processing?4. What is blow ratio?5. What is foam density?6. What is litre weight?7. Give a relationship between foam density, blow ratio and litre

weight8. How the quality of can be evaluated?9. Describe FFT process of foam application10. Describe MITTER foam applicator for carpet11. Mention with suitable sketch the RSF foam application12. Describe Jannus mini foam application13. Describe Monforts foam application14. What are the advantages & disadvantages of foam process?15. Why solvent may be used for dyeing media?16. What are the requirements of an ideal solvent for dyeing?17. What are the limitations of use solvent in dyeing?18. Compare trichloro ethane, per chloro ethane & 1,1,1 trichloro

ethane with water as a dyeing media19. Why polyester can be dyed successfully at 100’c temp without

carrier by using solvent?20. What are the advantages and disadvantages of solvent dyeing?21. What are the light sensitive parts of a human eye?22. What do you mean by angle of sight?23. What is rod and cone?24. What is SCOTOPIC VISION?25. What are the types of cone cells?26. What is luminosity curve?27. What is PHOTOPIC VISION?28. What is cone sensitivity curve?29. What are the reasons of defective color vision/

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30. What do you mean by the term Monochromates, dichromates and trichromates?

31. What do you mean by the term Anomalous trichromates?32. Describe the term Metamerism33. Why lamp options are necessary?34. Describe D65,TL84, CWF, U30, W, F, UV etc35. What is color-rendering index (CRI)?36. Describe trimatic theory of color vision37. What are the limitations of trimatic theory of color vision?38. What do you mean by CIE?39. What do you mean by the term CIE X42?40. What are hue, value, chroma?41. What are the properties of CIE l* a* b* color space?42. Describe the meaning of L* a* b*43. What do you mean by the terms a. color difference b. standard

observer c. color contrast44. Describe Monochromatic contrast and polychromatic contrast45. Describe successive contrast and simultaneous contrast46. Describe contrast of hue & contrast of true47. What do you mean by the term color harmony?48. Describe with further classification, harmony of analogy & Harmony

of contrast49. What do you mean by the term CCM system?50. What are the things needed for CCM system?51. Describe the available software52. Give a flow diagram of CCM system53. What is Kubelka-Munk theory?54. What is Lambert-Bur theory?55. What do you mean by the term K/S value?56. What database is required for CCM system?57. What optical models are used in CCM system?58. What are the characteristics of raw effluent of a dye house?59. What are the minimum qualities of effluent required to discharge in

natural watercourse?60. What is BOD and what is COD?61. What are the harmful effects of effluent on environment if it is not

treated?

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62. Give a ideal flow diagram of a effluent treatment and disposal system

63. What do you mean by the term chemical coagulation?64. What do you mean by the term primary clarifier and secondary

clarifier?65. Why biological treatment needed for the effluent?66. What are the types of sludge handling system?

PART-III1. What are the minimum standards of dye house water quality?2. Define German hardness, French hardness, English hardness and

American hardness.3. Classify water according to hardness4. What are the bases of determination of total hardness by soap

method?5. What do you mean by the term “standard soap”? & How it can be

prepared?6. What is scudding factor and how it can be considered?7. How temporary hardness can be determined by titration method?8. What problems may arise in the boiler due to hardness?9. What are the boilers feed water feeds standard?10. What are the problems may arise in the processing due to

hardness?11. What are the conventional methods of water softening?12. What is demineralization process? What do you mean by this term

compacting?13. What problem may arise in the processing due to iron contact in

water?14. How the iron problems can be minimized?15. What do you mean by the term alkaline hardness?16. How alkaline hardness can be determined?17. Give the procedures of correction of alkalinity?18. What do you mean by the term surface-active agent?19. What are the mechanisms of oil/ dirt detachment from the fibre

surface by detergents?20. Give the classification of detergent 21. Give at least one example from each type of detergent22. What are the special characteristics of amphoteric detergent?23. How detergency power can be evaluated?

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24. Why the use of softener is increasing day by day?25. What are the desirable properties of textile softeners?26. What are the types of textile softeners?27. Why cationic softener is more used than the others?28. Write about reactive softeners29. Give the examples of anionic and non-ionic softeners30. Write notes on amphoteric softeners31. What are normal silicon softeners and what are amino-functional

silicon polymers?32. How you can distinguish silicon macro emulsion and silicon micro

emulsion?33. What are the outstanding advantages of silicon softeners?34. How bacteria degrade and damage the fabric?35. What are cellulose enzymes?36. What are the conditions that can cause bacterial growth?37. What are the requirements of an anti-bacterial agent?38. How creating physical barrier for the bacterial attack can protect

fabric?39. Describe the methods of anti-bacterial finish by using toxic agent?40. How fabric can be protected from bacteria by chemical

modification?41. What are the latest developments on anti-bacterial finish?

FINISHING PART1. Define fabric finishing2. Give the classification of fabric finishing3. What are the objects of fabric finishing?4. What are the factors to be considered to choice of finishing route?5. What are the objects of calendaring machine?6. What are the main elements of essentials of calendaring finish?7. What are the types of damping m/c?8. Give a general description of a calendaring m/c?9. Describe a: swizzing finish b. friction calendaring c. chasting finish

d. embossing 10. What is raising?11. What is flunnel fabric and what is fleece fabric?12. What are the types of raising m/c?13. What is double acting m/c and single acting m/c?14. What is emerizing?

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15. What is polar fleece?16. What do you mean by the term residual shrinkage?17. What is sanforizing?18. What are the objects of sanforizing process?19. Explain sanforizing process with a schematic diagram 20. What do you mean by the term compressive shrinkage?21. What is mercerization?22. What are the objects of mercerization?23. What physical and chemical changes happened in the cotton fibre

by mercerization process?24. What are the benefits obtained by the mercerization process?25. Why strength, hygroscopicity, dye-affinity and luster increased by

mercerization process?26. What are the effects of tension on mercerization process?27. What are the effects of temperature on mercerization process?28. What are the effects of caustic soda concentration on mercerization

process?29. What are the effects of time of treatment on mercerization process?30. What are the effects of washing condition on mercerization process?31. How yarn can be mercerized in hank form and continuous sheet

form?32. Describe cloth mercerizing process33. How mercerizing effect can be assessed?34. What is resin?35. What are the benefits of resin finishing on cotton fabric?36. Give a general recipe for resin finishing37. What is urea formaldehyde precondensate?38. Give the probable reactions may happened at the time of treatment

of cotton material with urea formaldehyde.39. What are the advantages and disadvantages of urea formaldehyde

resin?40. What are the advantages and disadvantages of Kaurit AF140?41. What are the advantages of di-methyl ethylene urea?42. What is Kaurit AF140?43. What are the advantages and disadvantages of DMEU?44. Give the application procedure DMEU?45. What is DMDHEU? (Di methylol di hydroxy ethylene urea)

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46. Give the reactions has taken place with Di methylol di hydroxy ethylene urea and cotton

47. Give the application procedure of DMDHEU48. What is water proof, water repellant and shower proof fabric?49. What do you mean by the term durable water repellant finish/50. Describe the application procedure of Valan PF and Cerol WB?51. Give the application procedure of Persuitol VS & Phobotex FT?52. What are poly siloxanes?53. What are the types of poly siloxanes?54. Describe the application procedure of silicon emulsion M47855. Give the burning cycle of polymer56. Give the thermal degradation chart of cellulose57. What are the required properties of an ideal flame retardant

chemical/58. What are the types of flame retardant process/59. Give the application procedure of Pyrovatex and THPC60. What are the advantages of THPC over other flame retardant

chemicals?1. Give a schematic diagram of vapor loc system of scouring & also

give the recipe2. What are the advantages and disadvantages of vapor loc system of

scouring?3. What do you mean by the term solvent scouring?4. Mention with flow diagram of solvent scouring of cotton fabric5. What are the advantages and disadvantages of solvent scouring?6. How scouring effect can be estimated?7. How bleaching effect can be estimated?8. How mercerizing effect can be estimated?9. Describe the methods of determination of available chlorine in

bleaching powder10. Describe the methods of determination of strength of hydrogen

peroxide

GARMENTS TECHNOLOGY

1. Why garments industries are important in the economy of Bangladesh?

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2. Describe historical background of garments?3. What is GSP system and MFA?4. What is QUOTA and no QUOTA?5. What is categories numbers? 6. Describe Canada non-QUOTA and USA QUOTA categories numbers?7. Describe EEC garments description8. Describe garments terms and definitions9. What is L/C, back-to-back L/C, invoice, FOB, C&F and CIF?10. What is swatch, ticket number, stitch & seam, linge, Godet and

disposable garments?11. How sample will make?12. How many components in shirt and trouser?13. Show the basic standard measurement of ladies and gents14. Describe garments making sequence15. What is grading?16. Why is bundling is necessary in cutting section?17. How will you calculate marker efficiency?18. Describe the constrain of marker making19. Describe computerized marker technique20. Describe the draw back of perforated marker, spirit duplicating and

paint spray marker technique21. How you will central fabric wastage outside the marker?22. What are the requirements of fabric spreading?23. What is straight and stepped lay?24. How many fabric packages are normally used in garments?25. Why manual spread are very popular in Bangladesh?26. What are the features of automatic fabric spreading?27. What are the methods of fabric cutting?28. What are the advantages of round knife, straight knife and band

knife?29. Why die cutting, drill and notcher are used in garments cutting

section?30. What are the drawbacks of water jets, laser beam cutting?31. What are the advantages of computerized cutting?32. How many types of interlining are used in garments?33. What are the conditions of fusing?34. Describe the types of fusing?35. Hoe many methods are available for resin coating?

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36. Describe high frequency fusing machine37. What is double & reverse fusing?38. Why temperature, pressure and time are controlled in fusing?39. How will you control the quality of garments?40. Define inspection loop.41. What are trimmings?42. Mention the list of sewing machine for producing shirt & trouser. 43. Calculate the basic consumption of shirt & trouser.44. What is merchandising?45. Mention the responsibilities of a good merchandiser.46. Define style and fashion47. What are the factors favoring of fashion?48. What are the factors retarding of fashion?49. Describe importance of fashion designing in RMG sectors50. Basic concepts of designing, pattern making, marker making and

garments manufacturing51. Tools of work measurement & time study and motion study52. Historical background of our garments industry53. Tools and machine used for garments manufacturing54. Application of computer in garments55. Concepts of merchandising in garments56. Production planning, controlling and production management in

relation to garments manufacturing57. What is quality and how to control the quality of garments?58. Different inspection systems used for inspecting raw-material, in-

lime process and finishing process59. Brief idea on CAD/CAM systems for garments manufacturing.60. How to prepare or make a report for industrial attachment?61. Concept of sewing machine and falts62. What do you understand by garments are washed?63. What types of garments are washed? 64. Why garments are washed?65. Give a standard recipe of a normal wash66. What is the outlook of normal washed garments?67. What affect could be achieve by bleach wash?68. What is the role of stone during garments washing?69. What type of garments is bleaching washed?70. What is caustic wash?

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71. What is the role of temperature in garments washing?72. What is the stone wash?73. Which type of stone is used during washing?74. What is enzyme wash?75. Why enzyme wash is costly?76. What are the special features of enzyme wash?77. What is back stain?78. Why back staining occurs?79. What is GSP?80. What is Quota and category?81. What is super white wash?82. What is garments dyeing?83. What are the advantages of garments dyeing?84. What types of garments are dyed?85. What types of dyes are used in garments dyeing?86. What is the L/R range in garments dyeing?87. How much time needed to complete pretreatment & dyeing of a

batch of a garments?88. What is seam slippage?89. What are the sewing problems?90. What are the systems of garments inspection?91. What are the systems of fabric inspection?92. What is the production of a basic shirt/line/day?93. What is the production of a T-shirt /line/day?94. What is the production of a polo shirt /line/day?95. How many machines are used for shirt, trouser, T-shirt and polo

shirt production per line?96. Name some machines of a garments factory97. Name some machines of a garments washing plant98. How the garments factories are classified?99. Name of some sewing machine manufacturer100.How many garments factories in Bangladesh?100. How many garments buying houses in Bangladesh?101. What is the export value of RMG sector in last year?102. How many employees in garments sector?103. What is the percentage of female worker in RMG sector?104. Which are the major garments importing countries from

Bangladesh?

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105. What is the percentage of local woven fabric consumption in RMG sector?

106. What is the percentage of local knit fabric consumption in RMG sector?

FABRIC MANUFACTURING TECHNOLOGY1. What is weaving?2. What do you mean by non-woven fabrics?3. What is warp and weft?4. Explain drafting and denting5. What is winding?6. How winding is done?7. What are the objects of winding?8. Name different types of winding packages9. Give some example of parallel and near parallel wound package10. What is the difference between direct and indirect drive?11. Mention the main difference between precession and non precision

winding12. What is the necessity of yarn guides and tensioners?13. Name the auxiliary functions in winding14. What is creeling?15. What is piecing?16. What do you mean by doffing?17. Why yarn clearer is used in winding?18. What do you mean by efficiency?19. Why lower efficiency occurs in winding section?20. What is the main difference between ordinary pirn & automatic

pirn?21. Where can we use the automatic shuttle and ordinary shuttle?22. Why warping is done?23. What do you mean by raping?24. What is the main difference between sectional warping and high

speed warping?25. Mention the uses of sectional and high speed warping26. What do you mean by sizing?27. Why sizing is done?28. What is the importance of sizing?29. Why spun yarn cannot be used directly in weaving section?

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30. Why sizing of warp yarn is necessary?31. Why sizing of weft yarn is not done?32. Name different types of size ingredients33. Why lubricants or softener is used in sizing?34. Why antiseptics and hygroscopic agents are used in sizing?35. What is the effect of more size pick up?36. What problem will be seen if over drying in sizing process?37. Why multi cylinder drying is most widely used?38. What is the importance of immersion rollers and squeezing roller in

sizing?39. What types of faults are usually seen in sizing?40. What are the disadvantages of sizing?41. Name different types of hand loom42. How do the handlooms operate?43. What is the main difference between power loom and modern loom?44. What is the difference between shuttle loom and shuttle less loom?45. What is primary motion?46. What is shedding and picking?47. What do you mean by beat up?48. What is secondary motion?49. What is the main difference between over pick and under pick?50. What do you mean by tertiary or auxiliary motion?51. What is the main difference between handloom and power loom?52. What do you mean by Hessian and sacking?53. Why 7 wheels and 5 wheels take up is used?54. Why more crimp is used in weft yarn?55. What is knitting?56. What is warp and weft knitting?57. What is circular and flat knitting?58. What is Wales and courses?59. Write the name of main/principle knitting elements60. Write the name of knitting elements?61. What are the differences between bearded needle and latch needle

according to the knitting action?62. What is compound needle?63. Classify the sinker according to their functions64. What is jack?65. What is needle loop and sinker loop?

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66. What is side limb?67. What is needle gauge?68. What is cam?69. State the classification of a cam70. Write the name of the different parts of a knitting cam71. What are the differences between miss cam and float cam?72. What is held loop, tuck loop on bearded needle?73. Write the name of basic structure of weft knitting and warp knitting74. What is single jersey structure and double jersey structure?75. What is the use of double-headed latch needle?76. What is needle gaiting?77. Which points we are considered to represent a circular knitting m/c

specification?78. What is sinker timing?79. How can we calculate the production in weight of a single jersey

circular knitting m/c and which parameters are needed to calculate this production?

80. What is open top m/c?81. State the features of a plain knitted structure 82. What is basic rib structure?83. What are the features of a rib knitted structure?84. What is 4-truck circular knitting m/c?85. State the features of a rib knitted structure86. What is needle timing?87. What is interlock fabric?88. State the main features of a purl knitting m/c89. What are the differences between fabric length m/c and garment

length m/c?90. State the classification of warp knitting m/c91. What are the knitting elements of a Tricot and Raschel warp knitting

m/c?92. What is lapping movement of a guide bar?93. What is flat knitting m/c?94. What are the differences between Tricot and Raschel warp knitting

m/c?95. Explain the lapping diagram and chain notation96. Write the name of knitted fabric faults 97. What is non-woven fabric?

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98. Write the different names of the production system of non woven fabric

99. What do you mean by automation of knitting industry?100. What is multi axial fabric?101. Write the different names of the production system of non

woven fabric102. What are the end uses of multi axial fabric?103. How can you increase the no. of cam system of circular knitting

m/c?104. State the importance of yarn friction in knitting105. What is tightness factor?106. State the main features of the following fabrics:

a. Accordion fabricb. Single lacostec. Double lacosted. Jersey corde. Milano rib etc

107. What are the features of automatic loom?108. In which loom we get highest PPM and why?109. How many types of feeler?110. What are the different parts of a shuttle and functions?111. How ways and why we can pattern in weft way?112. What are the warp protector motions?113. Why we use fork motion?114. Which type of fork motion is better?115. When and why different types of warp stop motions are used?116. What is jacquard shedding?117. Differ among SLSC, DLSC & DLDC jacquard118. When open shed, centric shed and fine pitch of cross borders

jacquard shedding is used?119. What are the systems of harness mounting?120. What are the methods of increasing figuring capacity of jacquard

shedding?121. When and why CBC broadloom is used?122. On which fact’s cloth costing are depend?123. How we can minimize cloth costing?124. What is break-even point?125. How can we increase profit from cloth?

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126. What are the causes and remedies of warp and weft breakage?127. What are the causes and remedies of fabric faults?128. What are different types of efficiency?129. How can we increase efficiency?130. On which factors efficiency depends?131. Give the classification of loom132. What are the aims and objectives of automatic weaving?133. Write the features of automatic loom134. How can we produce different types of woven design?135. Why it is necessary to use feeler in automatic loom and what are

their types?136. List the advantages of loom winder 137. What are the types of box motion?138. Write the purposes of weft mixing motion139. Why it is necessary to use warp protector motion?140. Differentiate between loose and fast reed motion141. Draw the different types of droppers142. Classify the jacquard loom143. What is the function of warp stop motion?144. State the scope of jacquard shedding mechanism145. What are the purposes of cross border jacquard loom?146. Write the difference between side weft fork and central weft fork

motion147. What is the defect of shedding?148. Find out the member of Neck cords, Hooks and Needles in a

400’s DLDC jacquard?149. Define efficiency and over all efficiency150. List the causes of warp breakage151. What are the duties of a weaver?152. Define Break Even Point and margin of safety153. Classify the costs154. Define Laminate 155. What are the methods of lamination?156. Write the difference between bonded and lamination157. What are the quality requirements for foam backed garments?158. Define braiding159. Name the technical difficulties in braid production

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160. Calculate the diameter of braid produced from 14 strands of 45 Tex

161. Mention the growing areas of use of braid162. Classify the Textile Fabrics163. Give the typical specifications of a belt164. What are the uses of belt?165. What do you understand by swivel weaving?166. Write the purposes of swivel weaving167. Define Geo-textiles168. What are the functions of Geo-textiles?169. How geo jute favors the growth of vegetation?170. Define lappet weaving 171. What are the common features of Muslin fabric?172. Differentiate between Swiss-Muslin and Anglo-Muslin fabric173. Name the kind of yarns used for lace making. Also mention their

properties 174. Write down the uses of lace175. Give the types of nets176. How labels are produced?177. Define tape and webbing178. Which fibers are used for medical textiles?179. Define and classify the toilet fabrics

YARN MANUTACTURING TECHNOLOGY1. What fiber properties are considered for spinning?2. What is typical micronaire value of cotton fiber?3. What is Tex? Kilotex? Worsted count?4. Define different count fiber?5. What is cleaning efficiency?6. What is chute feed system?7. Tell about lap hank and sliver hank8. What is the usual draft and doubling of cotton draw frame?9. What is tension draft?10. Mention some setting point of carding11. What are the typical production of card and draw frame?12. What is meant by DCP?13. How draft is calculated from gearing diagram?14. What is the function of barrow wheel?

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15. How production of carding and draw frame can be increased?16. How cotton is graded?17. What is auto leveler, open and close loop control?18. What is the draft of breaker card?19. What is dollop weight, ultimate?20. What is the production of jute breaker card?21. Define batching and Emulsion22. Define: cotton count

Metric count Tex Denier Worsted Spyndle

23. Give some example of Bast fiber and leaf fiber, mineral fiber & hairy fiber

24. Impact of immature fiber in spinning and dyeing25. How do you express the strength of fiber and give its units26. Variety of cotton27. Name some cotton producing countries 28. Give the properties of cotton fiber

Specific gravity Strength Fineness Staple length MR% Melting point Elongation

29. Difference between carded and combed process30. Differentiate between mixing and blending31. What is SCI?32. What is BIAS, HVI & AFIS?33. Necessity of carding in yarn manufacturing process34. Why called:

Card is the heart of spinning mill Well carded is half spun

35. What is pneumophil?36. Principle of tender carding, roller carding & stationary fold carding

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37. In revolving flat card where main carding action takes places?38. Which metal is used for carding?39. Selection of carding angle for different machine parts40. How fiber damage in card?41. Causes of nep formation in card 42. Different types of hook formation in carding43. Production calculation of a carding m/c44. Explain ‘Drafting causes irregularities whereas doubling minimizes

irregularities’.45. Define:

Break draft Tension draft Back zone draft Front zone draft Total draft

46. What is periodic variation and Drafting wave?47. How does short fiber is controlled in Draw frame?48. Different forms of Drafting and their suitability49. Function of auto leveler in Draw frame50. What are the drafting forces?51. Explain: nip point, roller setting and drafting zone52. Basic composition of jute53. Problem associated with lignin54. Different jute grade55. Types of jute yarn56. Composition of Hessian and sacking57. Difference between Batch and batching58. Ingredient of emulsion and their function59. What are the defects of emulsion?60. Oil distribution in jute emulsion 61. Jute card pinning62. What are staves?63. Function of tin cylinder, worker and striker64. Explain:

Up striking Down striking

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Half circular Full circular

65. Where shell is used in jute processing?66. What is TM?67. What is the function of TCP?68. What is the range of noil% removal?69. How production of comber can be calculated?70. What is the comber input lap hank?71. Mention change wheel of simplex72. How noil% can be adjusted?73. What is the function of building motion in simplex?74. What is the difference between bobbin building and cop building?75. What are the common change wheels of Ring frame?76. Tell example production of comber, simplex & ring frame77. What is the function of index wheel?78. How production of ring frame can be calculated?79. What is twist angle and maximum value of it?80. What is OPS and how it is calculated?81. What is the OPS of 20, 30, 40, 60 Ne yarn?82. What is spacer?83. Mention typical draft of ring and simplex84. Explain “Twist cost money ”85. What is the nips/min and feed/nip of atypical comber?86. What is the function of gill pin in jute drawing?87. What is quality ratio?88. What is the usual count of jute sliver and yarn?89. What is lead?90. What do you mean by the term “slip draft”?91. Briefly mention silk spinning process92. What is hacking?93. Mention properties of different fibers94. What is traveler no?95. What is the traveler no for 20, 30 & 6o Ne yarn?96. Mention waste% of different stage of cotton processing97. How will you analyze spectrogram?98. Production of different processing machine99. Prepare a table for spin plan of cotton and jute

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100. What do you understand by the color grade 21-2?101. Mention production of each machine102. Mention draft of each machine103. Mention waste% of each machine104. Mention parameter (twist, count etc ) of yarn manufacturing105. Discuss on auto leveler and controller hardness106. What is open loop and close loop control?107. What is ISO certification?108. What is GSP?109. What is statistical quality control?110. What is Q95%, VL curve?111. What is the function of Classimate, AFIS. HVI & Optical cleaner?112. What is the principle of EYC?113. What is the typical value of S, L, T setting?114. What is Ring data and Sliver data?115. What is meant by EXPERT SYSTEM?116. Discussion on Uster Statistics117. What is MIS?118. Define terms OPS, Millitex, spinning strangle 119. Define terms Texturing, False twist and two for one twister120. Mention flow chart from fiber to dyed fabric121. What is the responsibility of a production officer?

TEXTILE TESTING AND QUALITY CONTROL1. What is quality, control, and quality control?2. What is product control & process control with example?3. How can govern quality control by Men, machine and material?4. What is moisture regain &Moisture content?5. What is the effect of RH% on the textile mills?6. What is RH%?7. Standard testing atmospheric condition8. What is the importance of QC in textile sector?9. Std moisture regain of cotton, PES, Nylon, Jute & Silk10. What is correct invoice weight (CIW)?11. What is Hysteria’s effect?12. What is swelling?13. Mention some instrument involved to measure RH% & MR%

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14. Meaning of CSIRO: Common Wealth Scientific and Industrial Research Organization

15. What is Tenacity? Average tenacity of cotton and jute fiber?16. What is breaking length and breaking extension?17. What is stress, strain, yield stress, yield strain and yield point?18. What is elasticity, plasticity?19. Mention some fiber strength testing instruments20. What is fiber fineness?21. What is the relation between maturity ratio and fiber fineness?22. What types of fiber are found on the basis of maturity?23. Mention the theoretical range of maturity ratio24. What is count (definition given Textile institute)?25. What is conditioned count?26. What is the difference between direct and indirect counting system?27. Mention some available count in direct and indirect system28. Definition and relation of counting systems29. Mention some available instruments to measure the yarn count30. What term is used to express the fineness of fiber and yarn?31. What is the system used for the fineness of fiber?32. What is relation between yarn dia and count?33. What is twist and why twist is inserted?34. What is s twist and z twist?35. What is the relation between TPI and count?36. What is the effect of twist on fabric properties?37. Mention some name of instruments to measure the amount of twist

in yarn38. How can you measure the fineness of fiber?39. What is sampling and objects of sampling?40. What is random and biased sampling?41. Define drape and drape co-efficient42. Explain WI43. How can you improve crease resistance properties of a fabric?44. Mention the name of the methods of water repellency testing45. What are the points to be recommended for careful consideration in

Bundesmann water repellency testing?46. What are the expressions we use to measure textile irregularity?47. What do you understand by “Periodic Variation”?48. What is the principle of fabric thickness measurement?

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49. What is the relationship between crimp% & take up%?50. What do you mean by nep count?51. Define the term fabric stiffness, drape co-efficient, serviceability and

water permeability52. Explain- C.R.L, C.R.E & C.R.T.53. What are the properties to be considered for carpet grading?54. What care should be done in sizing process?55. How can you Asses the quality of a finished fabric?56. Mention some mechanical faults in weaving?57. What are the causes of loop length variation in weft knitting?58. In place of 12kg of Hydrogen per oxide (35%)w/w , What would be

the equivalent amount of 50% w/w ? 59. What do you mean by total hardness of water and what is the

standard hardness of dye-house water?60. How can you determine the presence of starch in the fabric?61. What do you mean by EDTA?62. Define cloth cover factor.63. What is the relationship between the cloth cover & air permeability?64. Explain TIV. Where it is used?65. What do you mean by PPM?66. Mention some process problems due to water hardness.67. Is there any difference between air permeability & air porosity?68. Define bending length.69. What do you mean by yarn imperfection?70. What do you mean by +50% thick place or –50% thin place?71. Mention some uses of stroboscope & Tachometer.72. Mention some uses of variance length curves.73. Define tensile strength, tearing strength & bursting strength.74. What are the causes of shade variation in exhausted dyeing?

SPECIAL THANKS TO, Khalid Faisal Md. Mofidur Rahman Md. Hosenuzzaman PARAG (28 th batch)

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