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GATE TF Online Mock Test -Question Answers

GATE Textile Engineering and Fibre Science Online Mock Test Free. This mock test having 25 questions in each subjects, with four choices. On each click on answers system will tell you where the answers is correct or incorrect. You can view this GATE TF test question details at the end of the quiz.

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GATE 2017 : Textile Engineering and Fibre Science (TF) questions answers are applicable for any kind of Textile Engineering and Fibre Science Entrance preparation or PSU Competitive Exam in India. You can practice as much as you can to gather knowledge of how to answers GATE TF Exam 2017 critical type papers in short time and this can be a big factor for cracking all India engineering entrance level exam.



GATE TF - Online Practice Test - Question Answers

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Your answers are highlighted below.
Question 1
The fibre that contains nitrogen and sulfur is 
A
Polyester
B
Wool
C
Nylon 6
D
Kevlar
Question 2
Condensation polymerization is not used to produce 
A
Polyester
B
Nylon 6
C
Nylon 66
D
Polypropylene
Question 3
Wet spinning technique is commercially used to produce filament yarn of 
A
Polypropylene
B
Polyester
C
Nylon 66
D
Acrylic
Question 4
The fibre that dissolves in 59% (w/w) sulfuric acid solution is 
A
Wool
B
Polypropylene
C
Cotton
D
Viscose
Question 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
Question 6
Birefringence of filament yarn is related to its 
A
Crystallinity
B
Orientation
C
Individual filament denier
D
Density
Question 7
A machine that does not improve the mass evenness is 
A
Drawframe
B
Ring doubler
C
Speedframe
D
Ribbon lap
Question 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
Question 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
Question 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
Question 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
Question 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
Question 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
Question 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
Question 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
Question 16
The nonwoven process which has the highest production rate is 
A
Needle punching
B
Hydroentangling
C
Melt blowing
D
Spunbonding
Question 17
During bleaching of cotton with H2O2, the stabilizer used is 
A
Sodium hydroxide
B
Sodium silicate
C
Acetic acid
D
Sodium carbonate
Question 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
Question 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
Question 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
Question 21
Nep count in a cotton fibre sample is measured by 
A
AFIS
B
HVI
C
Uster tester
D
Stelometer
Question 22
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
Question 23
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)
Question 24
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
Question 25
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
Question 26
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
Question 27
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
Question 28
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
Question 29
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
Question 30
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
Question 31
Choose the correct alternative from amongst A, B, C and DMercerization of cotton results inP Increase in tensile strengthQ Increase in dye uptakeR Modification of crystal structureS Decrease in moisture regain  
A
P,Q,R
B
Q,R,S
C
P,S,R
D
P,Q,S
Question 32
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
Question 33
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
Question 34
The principle which cannot be used to measure hairiness of yarn is 
A
Light scattering
B
Image analysis
C
Photoelectric
D
Capacitance
Question 35
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
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GATE Textile Engineering and Fibre Science Online Mock

Congratulations - you have completed GATE Textile Engineering and Fibre Science Online Mock.You scored %%SCORE%% out of %%TOTAL%%.Your performance has been rated as %%RATING%%
Your answers are highlighted below.
Question 1
The fibre which has a mineral origin is      
A
Asbestos
B
Silk
C
Flax
D
Acrylic
Question 2
The chemical that is used to convert soda cellulose to sodium cellulose xanthenes in the manufacture of viscose rayon is     
A
Carbon disulphide
B
Sodium xanthate
C
Sodium sulphide
D
Sodium hydroxide
Question 3
The fibre that will float on water is      
A
Nylon
B
Polyester
C
Acrylic
D
Polypropylene
Question 4
The range of spinning speed (m/min) used in the manufacture of partially oriented polyester yarn is     
A
1000 — 1200
B
2000 — 2500
C
2800 — 3500
D
4000 — 6000
Question 5
Drawing of synthetic filament does not lead to an increase in     
A
Crystallinity
B
Tenacity
C
Tensile modulus
D
Elongation at break
Question 6
The spinning system that does not generate false twist during spinning is      
A
Ring spinning
B
DREF 3
C
Rotor spinning
D
Air jet spinning
Question 7
Most of the seed coat particles are removed in     
A
Blow room
B
Card
C
Comber
D
Draw frame
Question 8
An eccentric top roller in a drafting systeni leads to    
A
Change in draft with oscillation of nip line
B
Change in draft without oscillation of nip line
C
Neither change in draft nor oscillation of nip line
D
Oscillation of nip line only
Question 9
The increase in traveller weight leads to an increase in    
A
Yarn twist
B
Traveller lag
C
Balloon diameter
D
Yarn tension
Question 10
Dog knot is preferred to weaver’s knot during creeling because it is    
A
Easier to make
B
Stronger
C
Smaller in size
D
Less prone to slippage
Question 11
Size add-on does not depend on    
A
Roller hardness
B
Drying cylinder temperature
C
Size paste concentration
D
Machine speed
Question 12
BaIl warping is min1y used in the manufacture of    
A
Teny towel
B
Nantw fabric
C
Denim
D
3D fabric
Question 13
The factor that does not influence the propelling force for moving the weft yarn on air jet loom is    
A
Coefficient of friction between air and yarn
B
Air velocity
C
Yarn stren2th
D
Yarn diameter
Question 14
In the context of thenrial bonding of nonwoven web the statement which is not true is    
A
A thermoplastic component has to be present in the web
B
Heat is applied until the thermoplastic component melts
C
The polymer flows by surface tension and capillary action to fibre cross over points
D
Chemical reaction takes place
Question 15
A 51 mm long fibre has 6% crimp. The crimped length of the fibre iii nun is approximately     
A
44
B
46
C
48
D
50
Question 16
On a mass based evenness tester. thin place in a yarn at — 40 % setting is counted if mass per unit length is    
A
40 % of the mean mass per unit length
B
60 % of the mean mass per unit length
C
40 % of the mean mass per unit length or less
D
60 % of the mean mass pcr unit length or less
Question 17
Ratio of grab strength to strip strength is the highest when fabric extension (%) is     
A
0
B
8
C
10
D
15
Question 18
Bursting strength of a woven fabric with the same warp and weft yarns is the highest when the ratio of ends/cm and picks/cm is     
A
1.1
B
1.0
C
0.9
D
0.8
Question 19
Fabric abrasion resistance cannot be assessed by the loss in     
A
Strength
B
Thickness
C
Weight
D
Air permeability
Question 20
Bleached cotton fabric was sent to a laboratory for determination of Copper Number, which is an estimate of the presence of     
A
Hydroxyl groups
B
Carboxyl groups
C
Reducing groups
D
Oxidizing groups
Question 21
Malachite Green is an important dyestuff. The typical green colour is obtained when the dye molecule is    
A
Nonionic
B
Cationic
C
Anionic
D
Made up of phenyl groups
Question 22
A typical curve between equilibrium dye uptake and dyeing temperature goes through a maximum. After the maximum, the dye uptake decreases because    
A
Kinetic energy increases rapidly
B
Pressure in the dye bath increases
C
Saturation value is reached
D
Dyeing is au exothermic process
Question 23
The efficacy of the wash-n-wear treatment can be estimated by measuring its    
A
Bending length
B
Tensile strength
C
Dye uptake
D
Crease recovery
Question 24
Softener reduces the bending rigidity of fabrics by decreasing    
A
Inter-fibre and inter-yarn friction
B
Modulus of the fibres
C
Glass transition temperature of the fibres
D
Packing coefficient of yarns
Question 25
Assume that the rate of evaporation of moisture from a wet fabric during drying process is proportional to the amount of moisture present in the fabric. If 50% of the moisture is evaporated in the first 5 minutes then the time (mm) taken to evaporate 90% of the moisture is approximately     
A
9
B
17
C
22
D
33
Question 26
The winding speed (difference between bobbin speed and traveler speed) of yarn in a ring frame is 200 rev/mm when bobbin diameter is 28 mm. If the bobbin diameter is increased to 35 miun. the winding speed (rev/nun) would be     
A
140
B
160
C
180
D
200
Question 27
The weight of material on a roving bobbin is 2.4 kg. The roving hank is 600 tex. If delivery rate is 20 in/mm. the time (min) required to build the bobbin is     
A
180
B
190
C
200
D
210
Question 28
The terry towel fabric is a    
A
Warp pile structure with two series of warp and one series of welt yarn
B
Welt pile structure with two series of warp and one series of well yarn
C
Warp pile structure with two series of welt and one series of warp yarn
D
Weft pile structure with two series of well and one series of warp yarn
Question 29
Sizing of single cotton yarn leads to an increase in    
A
Strength and extensibility but decrease in bending rigidity and hairiness
B
Strength and bending rigidity but decrease in extensibility and hairiness
C
Strength and hairiness but decrease in extensibility and bending rigidity
D
Bending rigidity and extensibility but decrease in strength and hairiness
Question 30
The strength utilization of yarn in a woven fabric is     
A
Always more than 1.0
B
Always less than 1.0
C
Always equal to 1.0
D
Either more or less than 1.0
Question 31
The polyester (%) iii the final sliver is approximately     
A
8
B
17
C
25
D
33
Question 32
The mass cv (%) of the final sliver is approximately    
A
0.6
B
1.24
C
l.86
D
2.33
Question 33
The weft crimp (%) is approximately     
A
0
B
5
C
10
D
15
Question 34
The thickness of the above fabric (mm) is approximately     
A
0.05
B
0.25
C
0.50
D
0.75
Question 35
Thermal conductivity is minimum when the bulk density is approximately     
A
10
B
20
C
55
D
200
Question 36
The minimum value of thermal conductivity, in mW/(m∙K), is approximately     
A
36
B
39
C
41
D
46
Question 37
The average area of the cell wall (im2) is     
A
80
B
100
C
120
D
140
Question 38
The average degree of thickening of cell wall is approximately      
A
0.84
B
0.89
C
0.94
D
0.99
Question 39
Which one of the following options is the closest in meaning to the word given below? Pacify     
A
Excite
B
Soothe
C
Deplete
D
Tire
Question 40
Choose the grammatically CORRECT sentence:    
A
He laid in bed till 8 o’clock iii (lie morning.
B
He layed in bed till 8 o’clock in the morning.
C
He lain in bed till 8 o’clock in (lie morning.
D
He lay in bed till 8 o’clock in the morning.
Question 41
Which one of the parts (A, B, C, D) in the sentence contains an ERROR? No sooner had the (1Oct01 seen tile results of the blood tests than he suggested tile patient to see the specialist.   
A
no sooner had
B
results of the blood test
C
suggested the patient
D
see the specialist
Question 42
Ten teams participate in a tournament. Every team plays each of the other teams twice. The total number of matches to be played is     
A
20
B
45
C
60
D
90
Question 43
A value of x that satisfies the equation log x + log (x — 7) = log (x + 11) + log 2 is     
A
1
B
2
C
7
D
11
Question 44
Ravi is taller than Anin but shorter than Iqbal. Sam is shorter than Ravi. Mohan is shorter than Arun. Balu is taller than Mohan and Sam. The tallest person can be     
A
Mohan
B
Ravi
C
Balu
D
Arun
Question 45
A smuggler has 10 capsules in which five are filled with narcotic drugs and the rest contain the original medicine. All the 10 capsules are mixed in a single box. from which the customs officials picked two capsules at random and tested for the presence of narcotic drugs. The probability that the sniugler will be caught is     
A
0.50
B
0.67
C
0.78
D
0.82
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