Job , viva , interview questions for textile engineers

Job/Viva /Interview Questions For Textile Engineers Job/Viva /Interview Questions For Textile Engineers Job/Viva /Interview Questions For Textile Engineers Viva Q…YMT 1. What is the first process/ machine in yarn production? Ans. Blow room. 2. What is the second process/ machine in yarn production? Ans. Carding machine. 3. What process / machine is used after carding? Ans. Draw frame. 4. What process is used after draw frame? Ans. Simplex. 5. What process is used after simplex? Ans. Ring frame. 6. Show the flow chart of carded yarn production. Ans. 7. Show the flow chart of combed yarn production. Ans. 8. What is the production of blow room? Ans. Lap. 9. What is the production of carding machine? Ans. Sliver. 10. What is the production of draw frame? Ans. Sliver/Drawing sliver 11. What is the production of simplex? Ans. Roving. 12. What is the production of ring frame? Ans. Yarn. 13. 1 lb(pound) =? Ans. 840 yds=1 Hank=0.4536 kg=453.6 gm=16 ounce(oz). 14. What is the input of blow room? Ans. Bale. 15. What is the input of carding machine? Ans. Lap/Now chute feed system is being used. 16. What is the input of combing? Ans. Sliver lap and number of doubling is usually 20-24. 17. What is the input of simplex? Ans. Drawn sliver, Sliver hank 0.12/0.14/0.16,etc. 18. What is the input of ring frame? Ans. Roving/Roving hank may be 0.75/0.80,etc. 19. What is fiber fineness? Ans. Fineness is one of the most important parameter determining the yarn quality (Fine or Coarse). 20. How fineness is specified for cotton? Ans. Fineness is specified by micronaire value for cotton. 21. The maturity of cotton is defined in terms of the development of cell wall (Yes/no). Ans. Yes. 22. A fully mature fibre has a well developed thick cell-wall (Yes/no). Ans. Yes. 23. An immature fibre has a very thin cell-wall (Yes/no). Ans. Yes. 24. In mature fibre, dye absorption is high (yes/no) Ans. Yes 25. In immature fibre, dye absorption is low (yes/no). Ans. Yes 26. What is staple length? Ans. The average length of spinnable fibre is called staple length. 27. If staple length is increase then yarn quality is also increase (yes/no). Ans. Yes 28. Toughness of fibre has a direct effect on yarn and fibre strength (yes/no). Ans. Yes 29. If fibre strength is higher, then yarn and fabric strength is also higher (yes/ no). Ans. Yes 30. Short fibres deteriorate the yarn strength and uniformity (true/false). Ans. True. 31. What is the minimum strength for a textile fibre? Ans. Approximately 6 CN/tex (about 6km breaking length) 32. What do you know about Presley index =? Ans. Breaking load in Ibs/Bundle weight in mg. 33. What is fibre elongation? Ans. Elongation is specified as a percentage of the starting length. 34. What is bale management? Ans. Testing, sorting and mixing bales according to the properties of fibre for producing specific good quality yarn at minimum cost is called bale management. 35. When bale mixing is done? Ans. Before the blow room/Before the bales going into blow room. 36. What are the basic operations in the blow room? Ans. I) Opening II) Cleaning III) Mixing & blending IV) Even feed of material to the card. 37. What is carding? Ans. Carding may be defined as the reduction of an entangled mass of fibre to a filmy web by working them between two closely spaced, relatively moving surface clothed with sharp wire points. 38. Objective of carding. Ans. - To open up the cotton in to single fibre state. - To reduce the number of neps, short fibres. - To produce a thick untwisted rope of fibre called sliver. 39. Carding is called the heart/mother of spinning (true/ false). Ans. True. 40. What are the main objectives of draw frame? Ans. - Straightening & parallelization of fibres by drafting & drawing. - Minimization of irregularity by doubling. - Blending & mixing of fibres. - To produce a more uniform sliver of definite wt/yds. 41. What are the faults of blow room? Ans. 1. Soft lap, 2. Conical lap, 3. Barrel shaped, 4. Split lap, 5. Ragged selvedge, 6. Lap licking. 42. Find out the hank of the lap when the weight of the lap is 14 oz/yds. Ans. 14 oz contains = 1 yds, 1 oz contains = 1/14 yds, 16 oz or 1 lb contains = 16/14 yds =16/14×840 hank=0.00136 hank So hank of lap = 0.00136. 43. Find out the wt/yds of the lap when hank of the lap is 0.0014? Ans. Weight of 0.0014×840 yds = 1 lbs or 16 oz 1.176 yds = 16 oz 1 yds = 16/ 1.176 oz = 13.6 oz So weight of lap = 13. 6 oz/yds 44. For cotton, higher the count, finer the yarn (yes/no). Ans. Yes 45. For jute, lower the count, finer the yarn (yes/ no). Ans. Yes. 46. What is the name of combing waste? Ans. Noils. 47. What is the meaning of TPI? Ans. Turns per Inch/Twist per inch 48. What is the ring frame wastage? Ans. Pnewmafil, banda, sweep, hard waste. 49. What is roving? Ans. A roving is a continuous slightly twisted strand of fibres which has not received its final drawing for yarn. Roving hank=0.70 to 0.85, TPI=about 1.15 50. What are the faults of yarn? Ans. (i) Irregular yarn (ii) Thick & thin places (iii) Slubs (iv) Nepped yarn (v) Spinners double (vi) Crackers (vii) Bad piecing (viii) Hairiness (ix) Soft yarn (x) Hard & non elastic yarn (xi) Rough yarn 51. Over twisted yarn become poor in strength (yes/ no). Ans.Yes 52. What is stress? Ans. Stress is the ratio between the applied force and cross sectional area of the specimen, Stress = applied force/ cross sectional area = F/A. Unit of stress is N/m 2 , dyne/cm 2 , which is also called Pascal (Pa). 53. What is tenacity? Ans. The tenacity of a fibre is the mass stress at break. Unit – gm/tex, Tenacity = breaking load / mass stress or linear density, Linear density = mass/unit length. 54. What is tensile strength? Ans. Tensile strength = force required to break the specimen/ cross sectional area 55. What is yield point? Ans. The point up to which, a material contains its elasticity is called yield point. 56. What are the basic textile materials? Ans. 57. More fibre drawing produces more short fibre & resulted weak yarn (yes/no). Ans. Yes 58. What is twist? Ans. Twist is the spirality of bundle of fibres/ filaments. 59. Write down the types of yarn twist. Ans. i. “z” or clock wise & ii. “S” or anti clock wise twist. 60. Twist increases the strength of yarn (true/ false). Ans. True 61. Write down the moisture regain of cotton fibre? Ans. 8.5% 62. What is IPI? Ans. It indicates yarns thick places, thin places and slubs. 63. What is count? Ans. Count is a numerical expression which expresses /indicates coarseness or fineness of yarn. Or, count is a number indicating the mass per unit length or the length per unit mass of yarn. 64. Different types of measurement. Ans. 1 yard = 0.9144 m 1 m =1.0936 yards=7000 grain 1kg = 2.204 lbs, 1lbs(pound) = 453 .6gm = 7000 grains 1gm =15.43 grains 16 oz = 1 lb(pound) 36 inch = 1 yard 2.54 cm = 1 inch 1 Hank=840 yards=1 pound 65. What is yarn twist? Ans. The spiral disposition of the components of thread which is usually the result of relative rotation of the two ends is called yarn twist. 66. Rotor yarn is “s” twisted (yes/no). Ans. Yes 67. Ring process yarn is “z” twisted (yes/no). Ans. Yes 68. What is strain? Ans. Strain = elongation / initial length 69. What is the unit of Strain? Ans. No unit. 70. What is the meaning of CSP? Ans. Count Strength Product CSP= Count × Strength 71. If yarn is regular then CSP is higher (yes/no). Ans. Yes 72. Different relations. Ans. i) Denier = 9 × Tex ii) Ne × Denier = 5315 iii)Tex × Ne = 590.6 iv) Tex × Metric = 1000 v) Denier × Metric = 9000 73. what are the unusable waste in spinning mill? Ans: (a)dropping-II,(b)flat strips of coarse count,(c)Floor sweeping-II,(d)dust etc. 74. HVI(high volume instrument) is a very important m/c of Q.C lab in spinning mill.(yes/no) Ans. Yes 75. what tests are done by HVI m/c? Ans. (a)fineness,(b)trash,(c)length,(d)strength,(e)Color. 76. How can you determine yarn count in English system? Ans. Count (Ne) =length(yds)/length × weight unit/weight in gm = (120yds/840yds) × (1lbs or 453.6gm/weight in gm) =64.8/Weight in gm 77.write down the name of count of direct system? Ans. Txe,K tex,D tex,Mili tex,Denier,lb/spyndle, Woolen. 78.write down the name of count of indirect system and with details? Ans. Count unit lengt unit mass uses a. English (Ne) 840yds(hank) lb cotton b.Metric (Nm) Km(hank) Kg cotton c.Worsted 560yds (hank) lb worsted 79. what do you mean by one lea? Ans. one lea=120 yds. 80. what do you mean by WIRA? Ans. Wool international research association. 81.write down the full meaning of some institution? Ans. (a)BSTI = Bangladesh standard and testing institution. (b) ISO = international organization for standardization. (c) BS = British standard (d) AQL = Acceptable quality level. (e) BCIRA = British cotton industries research association. (f) ITET= institute of textile engineers and technologist. (g)AAMA=American apparel manufacturer association. (h)AAQC=American association of quality control. 82. what is the meaning of MIC? Ans. Microgram per inch. 83. In direct system which one is fixed (mass/length)? Ans. Mass 84. In indirect system which one is fixed (mass/length)? Ans. Length 85. English count is denoted by Ne (yas/no)? Ans. Yes. 86. Metric count is denoted by Nm(yes/no)? Ans. Yes 87. Sliver and roving count is expressed by hank(yes/no)? Ans. Yes [...]... can be expressed by two methodsAlphabetical expression e.g S,M,L,XL,XXL Numerical expression e.g 3 8,3 9,4 0,4 1,4 2(in cm or in inch) 44 Write down the feature of T-shirt? Ans (I) casual tops, (II) Narrow neck line, (III) Usually short sleeve, (IV) No collar 45 Write down the feature of polo shirt? Ans (I) Tops, (II) short/long sleeve,(III) collar,(IV) short button placket or neck opening 46 How can you... inspection 105 Write down the section of shirt making? Ans (I) Collar section, (II) Cuff section, (III) Body section 106 What do you mean by PD, WR, WP, and TC? Ans PD= Plain dyed, WR= Water repellent, WP= Water proof, TC= Tetron & cotton, SD= solid dyed, YD= Yarn dyed 107 What is pattern? Ans The pieces of thick paper are required in the form necessary to make or style of garments is called pattern 108 What... are the long staple fiber? Ans Jute, wool, flax, hemp 153 How fiber is form? Ans Elements ↓ Monomer/molecules/macromolecules ↓ Polymer chain ↓ Fibrils/micels ↓ Fiber 154 What are the requirement of fabric construction? Ans (I)EPI,(II)PPI,(III)warp count, (IV)weft count 155 What are the factors that determine the yarn properties? Ans Fiber properties, fiber arrangement, twist per inch 156 What is core... Suitability , 2 Appearance, 3 Comfort,4 Aftercare , 5 stability 141 How can we difference between a ladies shirt and a Gents shirt? Ans Buttons are on the opposite side to that of gents shirt, i.e ., Ladies shirt: Upper front part is right side Gents shirt: Upper front part is left side → Ladies pant: Fly piece is right side Gents pant: fly piece is left side 142 What is E-Textiles? Ans E -textile also... Tops part, (II) Bottom part 47 Write down the feature of pull oven / sweater? Ans (I) warm shirt,(II) long sleeve, (III) waist band, (IV) pull on over head 48 Write down the feature of Tank-loop? Ans (I) sleeve less pullover, (II) used over a shirt (III) warm shirt (IV) waist band, (V) pull on over head 49 Write down the feature of cardigan? Ans (I) Open front, (II) Fastened with a zip or button, (III)... waste,(b) sliver waste,(c)roving waste,(d)bonda waste,(e) pneumafil waste 198 What is fiber migration? Ans It means fiber distribution into the yarn 199 Number of fibres in the yarn cross-section? Ans 60-70 200 What is the standard staple length of cotton fibre? Ans Generally 0.5 inch to 2.5 inch 201 Write some yarn faults which are generally shown? Ans (I)Thick place, (II) Thin place, (III) Neps, (IV)... Ans (I)Thick place, (II) Thin place, (III) Neps, (IV) slub, (V) Hairiness 202 How many class or division of yarn preparation? Ans (I) Warp yarn preparation, (II) Weft yarn preparation 203 What are the classes of winding machine for package of yarn? Ans (I) pirn winding m/c, (II) cop winding m/c, (III) spol winding m/c, (IV) Cheese winding m/c, (V) cone winding m/c 204 What are the action of blow room?... passed through the cloth of proper interval during sewing is known as floating 135 Write down the classification of assortment/packing? Ans (I) Solid size, solid color, (II) Solid size, assort color, (III) Assort size, solid color, (IV) Assort size, assort color 136 What do you mean by Y-shirt? Ans Basic shirt/regular shirt/Dress shirt 137 What do you mean by casual/irregular shirt? Ans various types... cotton? Ans Goosypium Herbacum, Goosypium Hirsutum 164 what is ginning? Ans The procedure by which seeds and cottons are separated from seeds cotton is called Ginning 165 How much trash% in cotton? Ans Generally 1% to 10% 166 what is blow room waste? Ans Dropping-II,Dust,filter waste 167 What is carding waste? Ans Dropping-I, Tacker in waste,Flat strip, motes & flies, sliver waste 168 what is draw... in bobbin form 127 what is the first operation in blow room? Ans Opening 128 what is yarn? Ans It is an assemblage of fibers twisted or laid together to form continuous strand suitable for use In weaving, knitting etc 129 Manmade fiber are hydrophobic in nature(yes/no)? Ans Yes 130 finer fiber produce stronger yarn(yes/no)? Ans Yes 131 write down the forms of manmade fiber? Ans (I) Filament, (II)filament . Job/ Viva /Interview Questions For Textile Engineers Job/ Viva /Interview Questions For Textile Engineers Job/ Viva /Interview Questions For Textile Engineers Viva Q…YMT 1. What. produce a more uniform sliver of definite wt/yds. 41. What are the faults of blow room? Ans. 1. Soft lap, 2. Conical lap, 3. Barrel shaped, 4. Split lap, 5. Ragged selvedge, 6. Lap licking. 42 oz = 13.6 oz So weight of lap = 13. 6 oz/yds 44. For cotton, higher the count, finer the yarn (yes/no). Ans. Yes 45. For jute, lower the count, finer the yarn (yes/ no). Ans. Yes. 46. What is