60. If yarn is regular then CSP is higher (yes/no).
Ans. Yes
61. What is the meaning of CV%?
Ans. Coefficient of variation percentage.
62. Where sliver is collected and which form?
Ans. In can and coiler form.
63. In ring frame where yarn is collected?
Ans. Bobbin
64. Name the modern cone winding machine?
Ans. Auto-coner machine
65. Cotton fiber is dissolved with 70% H2SO4 (yes/no)?
Ans. Yes
66. All yarn of ring processing is Z-twist and rotor yarn is S-twist.(yes/no)?
Ans. Yes
67. Where flyer is used in a spinning mill?
Ans. Simplex m/c.
68. What is the raw material in spinning?
Ans. Fiber
69. What is millionaire value?
Ans. Micro gram per inch.
70. What is the ratio between length and width of fiber?
Ans. 1000:1
71. Twist and twist direction of yarn affects the fabric structure(True/false)?
Ans. True
72. What is UR?
Ans. UR = uniformity ratio =(50% Spun length/2.5% span length)×100
73. When fiber consider short?
Ans. Length shorter than 0.5 inch or 12.8mm.
74. Why yarn preparation is needed?
Ans. To increase weaving efficiency.
75. What is drafting?
Ans. The process of increasing the length per unit weight of slivers.
76. What is drawing?
Ans. It is the regular and uniform elongation of the sliver to make it light.
77. What is doubling?
Ans. The process of combining several sliver info one.
78. Which one is best ,combed yarn or carded yarn?
Ans. Combed yarn.
79. Roving is wind into the bobbin(yes/no) ?
Ans. Yes.
80. What is the output of comber machine?
Ans. Combed sliver.
81. What is the output of the ring frame?
Ans. Yarn in bobbin form.
82. What is the first operation in blow room?
Ans. Opening
83. What is ginning?
Ans. The procedure by which seeds and cottons are separated from seeds cotton is called Ginning.
84. How much trash% in cotton?
Ans. Generally 1% to 10%.
85. What is blow room waste?
Ans. Dropping-II,Dust,filter waste.
86. What is carding waste?
Ans. Dropping-I, Tacker in waste,Flat strip, motes & flies, sliver waste
87. What is draw frame waste?
Ans. Sliver wastage.
88. What is the simplex wastage?
Ans. Sliver wastage, roving wastage.
89. What is the ring frame wastage?
Ans. Pneumafil, hard waste, bonda waste, etc.
90. What is the comber wastage and waste %?
Ans. Noils,(12-18)%.
91. What is cleaning efficiency in blow room?
Ans. CE% =( trash cotton - trash in lap/trash in cotton )× 100
92. What is tex?
Ans. Count is the tex system in the weight in grams of 1000m or 1km of yarn.
93. What is the output of winding?
Ans. Yarn in cone form.
94. What is pitch?
Ans. The distance between adjustment spindles.
95. What are the factors that determine the yarn properties?
Ans. Fiber properties, fiber arrangement, twist per inch
.
96.What is core spun yarn?
Ans. It is a continuous filament polyester core wrapped in cotton fiber.
97.Write down the main part of carding machine?
Ans.(I)Doffer, (II)cylinder, (III)taker-in.
98. What is swelling?
Ans. The change in dimension due to absorbing water or moisture of any textile material is termed as swelling.
Swelling=(Swollen dimension-Dry dimension)/Dry dimension
