GATE Paper - 2013
Q. 1 – Q. 25 carry one mark each.
Q.1 The fibre that contains nitrogen and sulfur is
(A) Polyester
(B) Wool
(C) Nylon 6
(D) Kevlar
Answer (B)
Q.2 Condensation polymerization is not used to produce
(A) Polyester
(B) Nylon 6
(C) Nylon 66
(D) Polypropylene
Answer (D)
Q.3 Wet spinning technique is commercially used to produce filament yarn of
(A) Polypropylene
(B) Polyester
(C) Nylon 66
(D) Acrylic
Answer (D)
Q.4 The fibre that dissolves in 59% (w/w) sulfuric acid solution is
(A) Wool
(B) Polypropylene
(C) Cotton
(D) Viscose
Answer (D)
Q.5 Surface features of a fibre can be obtained by
(A) Transmission electron microscope
(B) Scanning electron microscope
(C) Small angle X-ray diffractometer
(D) Sonic modulus tester
Answer (B)
Q.6 Birefringence of filament yarn is related to its
(A) Crystallinity
(B) Orientation
(C) Individual filament denier
(D) Density
Answer (B)
Q.7 A machine that does not improve the mass evenness is
(A) Draw-frame
(B) Ring doubler
(C) Speed-frame
(D) Ribbon lap
Answer (C)
Q.8 Fibre individualization in a card will increase by increasing
(A) Licker-in to cylinder setting
(B) Doffer speed
(C) Licker-in speed
(D) Cylinder speed
Answer (D)
Q.9 Softer cots on drafting rollers result in
(A) An increase in drafting wave
(B) Less fibre slippage at roller nip
(C) Change in draft
(D) Reduced roller lapping
Answer (B)
Q.10 Compared to the spinning of finer cotton yarns, the preferred rotor diameter for the production of
very coarse cotton yarns would
(A) Be higher
(B) Be lower
(C) Remain the same
(D) Change depending on fibre strength
Answer (A)
Q.11 Amongst the following, the suitable technology for producing core spun yarn is
(A) Air vortex spinning
(B) Rotor spinning
(C) Friction spinning
(D) Air-jet spinning
Answer (C)
Q.12 Increase in taper angle on sectional warping drum will normally require
(A) Higher warping speed
(B) Lower warping speed
(C) Increase in traverse speed
(D) Decease in traverse speed
Answer (D)
Q.13 Increase in the ratio of the length of crank to the length of connecting rod leads to
(A) Increase in sley eccentricity
(B) Decrease in sley eccentricity
(C) No change in sley eccentricity
(D) Initial increase and then decrease in sley eccentricity
Answer (A)
Q.14 Shuttle remains on the race board during its flight in the shed because of
(A) Forward positive acceleration of the sley
(B) Backward positive acceleration of the sley
(C) Constant forward velocity
(D) Constant backward velocity
Answer (A)
Q.15 In weft knitted fabrics of the same mass per unit area produced from the same yarns, the structure
which will give the highest thickness is
(A) Plain
(B) Rib
(C) Purl
(D) Interlock
Answer (D)
Q.16 The nonwoven process which has the highest production rate is
(A) Needle punching
(B) Hydroentangling
(C) Melt blowing
(D) Spunbonding
Answer (D)
Q.17 During bleaching of cotton with H2O2, the stabilizer used is
(A) Sodium hydroxide
(B) Sodium silicate
(C) Acetic acid
(D) Sodium carbonate
Answer (B)
Q.18 The highest washing fastness in a dyed cotton fabric would be obtained if the dye-fibre bond is
(A) Ionic
(B) Hydrogen
(C) Covalent
(D) Van der Waal's force
Answer (C)
Q.19 Disperse dye cannot generally be fixed on polyester by
(A) Superheated steam at180oC
(B) Saturated steam at 130oC
(C) Dry heat at 200oC
(D) Saturated steam at 100oC
Answer (D)
Q.20 Crease resist finishing of cotton fabric does not lead to
(A) Reduction in tensile strength
(B) Increase in dimensional stability
(C) Increase in moisture regain
(D) Increase in bending length
Answer (C)
Q.21 Two yarn samples have standard deviation of strength σ1 and σ 2. If σ1 < σ2, the 'F' ratio would be
(A) σ1 / σ2
(B) σ2 / σ1
(C) σ1 square / σ2 square
(D) σ2 square/ σ1 square
Answer (D)
Q.22 Nep count in a cotton fibre sample is measured by
(A) AFIS
(B) HVI
(C) Uster tester
(D) Stelometer
Answer (A)
Q.23 In a given woven fabric the extension at break in weft direction is higher than that in warp direction. During bursting strength test, the threads that will always break first are
(A) Warp
(B) Weft
(C) Both warp and weft simultaneously
(D) Those with lower strength
Answer (A)
Q.24 CSP of yarn is equal to the product of
(A) Yarn tex and lea strength (N)
(B) Yarn count (Ne) and lea strength (lbf)
(C) Yarn tex and lea strength (lbf)
(D) Yarn count (Ne) and lea strength (kgf)
Answer (B)
Questions Q.25 to Q.32 are numerical answer type. The answer to each of these questions is
either a positive whole number, or a positive real number with maximum of 2 decimal places.
Q. 26 to Q. 55 carry two marks each.
Q.25 If the moisture regain of a fibre is 10 %, it's moisture content (%) is ...............Answer is 9.08 to 9.1
Q.26 A market survey by a garment manufacturing company revealed that the chest width of their target customers had normal distribution with a mean of 54 cm. If 18% of customers surveyed have chest width greater than 58 cm and 75% of customers surveyed have chest width greater than 52 cm, the percentage of customers having chest width between 56 cm and 58 cm is ................... Answer is 7
Q.27 The relationship between load (y) in N and elongation (x) in mm of a cotton fabric is y=√x. If the breaking elongation of the fabric is 9 mm, the work of rupture, in N.mm, is..........Answer is 18
Q.28 On twisting, the denier of a multi-filament yarn consisting of 300 filaments of 3 denier each becomes 1100. If 11 km of untwisted filament yarn is twisted, its length in km will be............Answer is 9
Q.29 A loom is producing 2 m wide grey fabric with 8% weft crimp. Assuming that the loom is running at 570 rpm with 90% efficiency, the weft consumption in kg/hr of 30 tex yarn will be..........Answer is 1.99 to 2
Q.30 The strength of 100 g/m2 fabric obtained by testing 4 cm wide strip is 0.4 kN. The tenacity (cN/tex) of the fabric is................Answer is 10
Q.31 Out of 100 textile companies, 10 companies are involved in spinning, weaving and chemical processing, 25 companies are involved in spinning and chemical processing, and 30 companies are involved in weaving and chemical processing. If 65 companies are involved in chemical processing, the number of companies involved ONLY in chemical processing is...........Answer is 20
Q.32 In a card the probability of fibre transfer from cylinder to doffer in one revolution of cylinder is 0.2. The probability that a particular fibre will be transferred to the doffer within the first three revolutions of cylinder is..............Answer is 0.48 to 0.49
Questions Q.33 to Q.55 are multiple choice type.
Q.33 The particular integral of 2
Answer (B)
Q.35 Consider the following assertion [a] and reason [r] and choose the most appropriate answer
[a] Nylon 6 is polymerized using only single monomer caprolactum
[r] Synthesis of Nylon 6 is basically an addition polymerization
(A) [a] is right [r] is wrong
(B) [a] is right [r] is right
(C) [a] is wrong [r] is wrong
(D) [a] is wrong [r] is right
Answer (A)
Q.36 Consider the following assertion [a] and reason [r] and choose the most appropriate answer
[a] Sodium cellulose xanthate formation is an essential unit operation in the production of viscose rayon
[r] It helps to reduce the degree of polymerization of cellulose
(A) [a] is right [r] is wrong
(B) [a] is right [r] is right
(C) [a] is wrong [r] is wrong
(D) [a] is wrong [r] is right
Answer (A)
Q.37 Consider the following assertion [a] and reason [r] and choose the most appropriate answer
[a] In false-twist friction texturing, the ratio of input to output tension is kept close to one
[r] Broken filaments and tight spots are within the acceptable limits at this condition
(A) [a] is right [r] is wrong
(B) [a] is right [r] is right
(C) [a] is wrong [r] is wrong
(D) [a] is wrong [r] is right
Answer (B)
Q.38 Consider the following assertion [a] and reason [r] and choose the most appropriate answer
[a] Heat setting increases the dimensional stability of synthetic fabrics
[r] The free energy reduces as a result of heating
(A) [a] is right [r] is wrong
(B) [a] is right [r] is right
(C) [a] is wrong [r] is wrong
(D) [a] is wrong [r] is right
Answer (B)
Q.39 The advantage of flyer leading over bobbin leading speed-frame is
(A) Lower roving stretch
(B) Lesser chance of unwinding after breakage
(C) Lower power requirement
(D) Power requirement remains fairly constant during the bobbin build up
Answer (C)
Q.40 The daily production of a mill is 1200 kg of 30 tex and 1200 kg of 20 tex yarns. The average yarn tex produced by this mill is
(A) 23
(B) 24
(C) 25
(D) 26
Answer (B)
Q.41 A square plain jammed woven fabric of 0.5 mm thickness is to be produced from polyester yarns.
Assuming circular yarn cross-section, the number of picks per cm in the fabric on the loom is
approximately
(A) 13
(B) 18
(C) 23
(D) 28
Answer (C)
Q.42 On a winding machine, if the winding speed is increased from 1000 m/min to 1200 m/min, the percentage increase in the yarn tension will be approximately
(A) 12
(B) 24
(C) 36
(D) 44
Answer (D)
Q.43 Choose the correct alternative from amongst A, B, C and D
Mercerization of cotton results in
P - Increase in tensile strength
Q - Increase in dye uptake
R - Modification of crystal structure
S - Decrease in moisture regain
(A) P,Q,R
(B) Q,R,S
(C) P,S,R
(D) P,Q,S
Answer (A)
Q.44 In the case of reactive dyeing of cotton, the exhaustion is 70% and reaction efficiency is 80%. Assuming that the initial dye concentration is 2% on the weight of fabric, the amount of unreacted dye on the fabric expressed as a percentage of fabric weight would be
(A) 0.14
(B) 0.28
(C) 0.35
(D) 0.42
Answer (B)
Q.45 Consider the following assertion [a] and reason [r] and choose the most appropriate answer
[a] Controlled reduction treatments are commercially used for shrink resist finishing of wool
[r] Reduction disrupts the disulphide bonds, which are responsible for wool shrinkage
(A) [a] is right [r] is wrong
(B) [a] is right [r] is right
(C) [a] is wrong [r] is wrong
(D) [a] is wrong [r] is right
Answer (C)
Q.46 The principle which cannot be used to measure hairiness of yarn is
(A) Light scattering
(B) Image analysis
(C) Photoelectric
(D) Capacitance
Answer (D)
Q.47 The abrasion cycles on a flat abrasion tester increase with an increase in
(A) Pressure applied during abrasion
(B) Speed of abrasion
(C) Area of abraded surface
(D) Specimen tension during abrasion
Answer (C)
Common Data Questions
Common Data for Questions 48 and 49:
A winding machine without anti-patterning device has the following particulars:
Cylindrical winding drum diameter : 75 mm
Number of crossing on drum : 2.5
Rotational speed of the drum : 2860 rev/min
Traverse length : 150 mm
A 3.5 degree constant taper cone is built on the above cone winder with no movement of the point of drive during the package build up. At mean cone diameter of 150 mm the package rev/min is 1375.
Q.48 The number of times major patterning will occur in producing 200 mm mean diameter package on 40 mm mean diameter core is
(A) 5
(B) 7
(C) 9
(D) 11
Answer (B)
Q.49 Distance in mm of point of drive from the base of the cone along the traverse is approximately
(A) 26
(B) 30
(C) 36
(D) 40
Answer (A)
Common Data for Questions 50 and 51:
Consider the following particulars for a spinning line producing 30 tex yarn from 150 militex polyester fibre.
Mass CV of card sliver : 3%
Mass CV added at draw-frame : 2%
Mass CV added at speed-frame : 3%
Mass CV added at ring-frame : 7%
Number of doubling at draw-frame : 6
Number of draw-frame passage : 1
Q.50 The mass CV% of roving is approximately
(A) 3.4
(B) 3.8
(C) 4.2
(D) 4.6
Answer (B)
Q.51 Index of irregularity of yarn is approximately
(A) 0.88
(B) 1.13
(C) 1.33
(D) 1.53
Answer (B)
Linked Answer Questions
Linked Answer Questions 52 and 53:
The angle subtended by the half-lap on the cylinder comb is 90o. The time taken by the half-lap to comb a fringe is 0.04 s.
Q.52 The speed of the comber in nips/min is
(A) 325
(B) 350
(C) 375
(D) 400
Answer (C)
Q.53 From the following data, calculate approximate production rate in kg/hr
Length of lap fed per nip : 6 mm
Lap linear density : 60 ktex
Noil : 20%
Efficiency : 80%
Number of heads : 6
(A) 21
(B) 26
(C) 31
(D) 36
Answer (C)
Linked Answer Questions 54 and 55:
Viscose fabric is to be resin finished with DMDHEU by pad-dry-cure method. Assume that
Mass of fabric per unit area : 200 g/m2
Width of fabric : 100 cm
Speed of the machine : 50 m/min
Concentration of pad liquor : 100 g/l
Wet pick up : 100%
Specific gravity of padding liquor : 1.0
Molecular weight of anhydroglucose unit : 162
Q.54 The resin add-on after padding in kg per kg of fabric will be
(A) 0.1
(B) 0.2
(C) 0.3
(D) 0.4
Answer (A)
Q.55 Assuming that the reaction takes place in amorphous region only and that the fabric crystallinity is 33%, the number of cross links formed per anhydroglucose unit after curing would be approximately
(A) 0.07
(B) 0.14
(C) 0.28
(D) 0.35
Answer (B)
General Aptitude (GA) Questions
Q.56 A number is as much greater than 75 as it is smaller than 117. The number is:
(A) 91
(B) 93
(C) 89
(D) 96
Answer (D)
Q.57 The professor ordered to the students to go out of the class.
I II III IV
Which of the above underlined parts of the sentence is grammatically incorrect?
(A) I
(B) II
(C) III
(D) IV
Answer (B)
Q.58 Which of the following options is the closest in meaning to the word given below:
Primeval
(A) Modern
(B) Historic
(C) Primitive
(D) Antique
Answer (C)
Q.59 Friendship, no matter how..................it is, has its limitations.
(A) cordial
(B) intimate
(C) secret
(D) pleasant
Answer (B)
Q.60 Select the pair that best expresses a relationship similar to that expressed in the pair:
Medicine: Health
(A) Science: Experiment
(B) Wealth: Peace
(C) Education: Knowledge
(D) Money: Happiness
Answer (C)
Q. 61 to Q. 65 carry two marks each.
Q.61 X and Y are two positive real numbers such that 2X +Y is less than equal to 6 and X+2Y is less than equal to 8. For which of the following values of (X,Y) the function f(X,Y) = 3X + 6Y will give maximum value?
(A) (4/3, 10/3)
(B) (8/3, 20/3)
(C) (8/3, 10/3)
(D) (4/3, 20/3)
Answer (A)
Q.62 If |4X-7| = 5 then the values of 2 |X| - |-X| is:
(A) 2, 1/3
(B) 1/2, 3
(C) 3/2, 9
(D) 2/3, 9
Answer (B)
Q.63 Following table provides figures (in rupees) on annual expenditure of a firm for two years - 2010 and 2011.
Category
|
2010
|
2011
|
Raw material
|
5200
|
6240
|
Power &
fuel
|
7000
|
9450
|
Salary &
wages
|
9000
|
12600
|
Plant &
machinery
|
20000
|
25000
|
Advertising
|
15000
|
19500
|
Research &
Development
|
22000
|
26400
|
In 2011, which of the following two categories have registered increase by same percentage?
(A) Raw material and Salary & wages
(B) Salary & wages and Advertising
(C) Power & fuel and Advertising
(D) Raw material and Research & Development
Answer (D)
Q.64 A firm is selling its product at Rs. 60 per unit. The total cost of production is Rs. 100 and firm is earning total profit of Rs. 500. Later, the total cost increased by 30%. By what percentage the price should be increased to maintained the same profit level.
(A) 5
(B) 10
(C) 15
(D) 30
Answer (A)
Q.65 Abhishek is elder to Savar. Savar is younger to Anshul.
Which of the given conclusions is logically valid and is inferred from the above
statements?
(A) Abhishek is elder to Anshul
(B) Anshul is elder to Abhishek
(C) Abhishek and Anshul are of the same age
(D) No conclusion follows
Answer (D)
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