Download Graduate Aptitude Test in Engineering (GATE) 2015 TF Textile Engineering and Fibre Science Question Paper
TF 1/8
Q. 1 ? Q. 25 carry one mark each.
Q.1
If 3 and 4 are two eigen values of
?
?
?
?
?
?
?
?
?
?
=
4
2
3
f e
d c
b a
A for some real numbers a, b, c, d, e, and f, then
the third eigen value of A is ________________
Q.2 If a continuous random variable X has probability density function
?
?
? ? ?
=
otherwise
x ax
x f
, 0
1 0 ,
) (
2
then the value of a
is ________
Q.3
The value of
x
x
x
sin
0
lim
?
is __________________
Q.4
If
?
?
?
?
?
?
?
?
?
?
?
?
=
12
1
0 0
0 4 0
0 0 3
A , then determinant of
1 ?
A
is __________________
Q.5
The number of linearly independent eigen vectors of the matrix
?
?
?
?
?
?
4 3
0 1
is ___________
Q.6 The gum in the raw silk filament is
(A) Wax (B) Lignin (C) Sericin (D) Fibroin
Q.7 For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is
(A) Acetone
(B) N,N? Dimethyl formamide
(C) Formic acid
(D) Aqueous sodium thiocyanate (55 wt%)
Q.8 Adipic acid is a monomer for the production of
(A) Poly(ethylene terephthalate)
(B) Nylon 66
(C) Nylon 64
(D) Nylon 610
Q.9 In melt spinning line, the melting of solid polymer and its homogenization takes place in
(A) Manifold
(B) Extruder
(C) Metering pump
(D) Quench duct
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GATE 2015 TEXTILE ? TF
TF 1/8
Q. 1 ? Q. 25 carry one mark each.
Q.1
If 3 and 4 are two eigen values of
?
?
?
?
?
?
?
?
?
?
=
4
2
3
f e
d c
b a
A for some real numbers a, b, c, d, e, and f, then
the third eigen value of A is ________________
Q.2 If a continuous random variable X has probability density function
?
?
? ? ?
=
otherwise
x ax
x f
, 0
1 0 ,
) (
2
then the value of a
is ________
Q.3
The value of
x
x
x
sin
0
lim
?
is __________________
Q.4
If
?
?
?
?
?
?
?
?
?
?
?
?
=
12
1
0 0
0 4 0
0 0 3
A , then determinant of
1 ?
A
is __________________
Q.5
The number of linearly independent eigen vectors of the matrix
?
?
?
?
?
?
4 3
0 1
is ___________
Q.6 The gum in the raw silk filament is
(A) Wax (B) Lignin (C) Sericin (D) Fibroin
Q.7 For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is
(A) Acetone
(B) N,N? Dimethyl formamide
(C) Formic acid
(D) Aqueous sodium thiocyanate (55 wt%)
Q.8 Adipic acid is a monomer for the production of
(A) Poly(ethylene terephthalate)
(B) Nylon 66
(C) Nylon 64
(D) Nylon 610
Q.9 In melt spinning line, the melting of solid polymer and its homogenization takes place in
(A) Manifold
(B) Extruder
(C) Metering pump
(D) Quench duct
GATE 2015 TEXTILE ? TF
TF 2/8
Q.10 The blending technique that gives the most homogeneous mixing of fibres is
(A) Lap blending (B) Tuft blending (C) Sliver blending (D) Roving blending
Q.11 In a cotton comber, noil extraction increases
(A) With a decrease in detachment setting
(B) With an increase in pre-combing draft
(C) If majority of hooks are presented in leading direction
(D) With an increase in short fibres
Q.12 The bottom roller surface used for driving aprons in ringframe drafting system is
(A) Knurled
(B) Axially fluted
(C) Spirally fluted
(D) Smooth
Q.13 If the numerical value of yarn linear density expressed in Tex and that in English system is the
same, this value to the nearest integer is
(A) 30 (B) 28 (C) 24 (D) 22
Q.14 Patterning is most likely to occur in
(A) Precision winding (B) Random winding
(C) Step-precision winding (D) Pirn winding
Q.15 In cotton yarn sizing, the starch primarily acts as
(A) Binding agent (B) Lubricating agent (C) Antistatic agent (D) Antimicrobial agent
Q.16 Purl is a
(A) Woven structure (B) Nonwoven structure
(C) Braided structure (D) Knitted structure
Q.17 The technology/ies used for producing SMS fabric is/are
(A) Spunlace
(B) Spunlace and Meltblown
(C) Needlepunch
(D) Spunbond and Meltblown
Q.18 Jigger CANNOT be used for
(A) Dyeing
(B) Printing
(C) Washing
(D) Scouring
Q.19 In the context of effluent discharge, BOD means
(A) Bio-oxidative degradation
(B) Bio oxygen distress
(C) Biological oxygen demand
(D) Bacteria observed on disc
FirstRanker.com - FirstRanker's Choice
GATE 2015 TEXTILE ? TF
TF 1/8
Q. 1 ? Q. 25 carry one mark each.
Q.1
If 3 and 4 are two eigen values of
?
?
?
?
?
?
?
?
?
?
=
4
2
3
f e
d c
b a
A for some real numbers a, b, c, d, e, and f, then
the third eigen value of A is ________________
Q.2 If a continuous random variable X has probability density function
?
?
? ? ?
=
otherwise
x ax
x f
, 0
1 0 ,
) (
2
then the value of a
is ________
Q.3
The value of
x
x
x
sin
0
lim
?
is __________________
Q.4
If
?
?
?
?
?
?
?
?
?
?
?
?
=
12
1
0 0
0 4 0
0 0 3
A , then determinant of
1 ?
A
is __________________
Q.5
The number of linearly independent eigen vectors of the matrix
?
?
?
?
?
?
4 3
0 1
is ___________
Q.6 The gum in the raw silk filament is
(A) Wax (B) Lignin (C) Sericin (D) Fibroin
Q.7 For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is
(A) Acetone
(B) N,N? Dimethyl formamide
(C) Formic acid
(D) Aqueous sodium thiocyanate (55 wt%)
Q.8 Adipic acid is a monomer for the production of
(A) Poly(ethylene terephthalate)
(B) Nylon 66
(C) Nylon 64
(D) Nylon 610
Q.9 In melt spinning line, the melting of solid polymer and its homogenization takes place in
(A) Manifold
(B) Extruder
(C) Metering pump
(D) Quench duct
GATE 2015 TEXTILE ? TF
TF 2/8
Q.10 The blending technique that gives the most homogeneous mixing of fibres is
(A) Lap blending (B) Tuft blending (C) Sliver blending (D) Roving blending
Q.11 In a cotton comber, noil extraction increases
(A) With a decrease in detachment setting
(B) With an increase in pre-combing draft
(C) If majority of hooks are presented in leading direction
(D) With an increase in short fibres
Q.12 The bottom roller surface used for driving aprons in ringframe drafting system is
(A) Knurled
(B) Axially fluted
(C) Spirally fluted
(D) Smooth
Q.13 If the numerical value of yarn linear density expressed in Tex and that in English system is the
same, this value to the nearest integer is
(A) 30 (B) 28 (C) 24 (D) 22
Q.14 Patterning is most likely to occur in
(A) Precision winding (B) Random winding
(C) Step-precision winding (D) Pirn winding
Q.15 In cotton yarn sizing, the starch primarily acts as
(A) Binding agent (B) Lubricating agent (C) Antistatic agent (D) Antimicrobial agent
Q.16 Purl is a
(A) Woven structure (B) Nonwoven structure
(C) Braided structure (D) Knitted structure
Q.17 The technology/ies used for producing SMS fabric is/are
(A) Spunlace
(B) Spunlace and Meltblown
(C) Needlepunch
(D) Spunbond and Meltblown
Q.18 Jigger CANNOT be used for
(A) Dyeing
(B) Printing
(C) Washing
(D) Scouring
Q.19 In the context of effluent discharge, BOD means
(A) Bio-oxidative degradation
(B) Bio oxygen distress
(C) Biological oxygen demand
(D) Bacteria observed on disc
GATE 2015 TEXTILE ? TF
TF 3/8
Q.20 Milling is associated with the processing of
(A) Cotton fabric
(B) Silk fabric
(C) Jute fabric
(D) Wool fabric
Q.21 Dyed wool fabric standards are used for the evaluation of
(A) Wash fastness
(B) Perspiration fastness
(C) Sublimation fastness
(D) Light fastness
Q.22 The yarn tenacity (gf/tex) measured in lea form, compared to that measured in single yarn form is
(A) Always lower
(B) Always higher
(C) Always equal
(D) Higher or lower depending on yarn count
Q.23 The property that Kawabata Evaluation System (KES) DOES NOT measure is
(A) Shear rigidity
(B) Bending rigidity
(C) Compressional resilience
(D) Tensile strength
Q.24 On absorption of moisture, the thermal insulation of cotton fabric will
(A) Decrease
(B) Increase
(C) Remain the same
(D) First increase and then decrease
Q.25 For meeting the criterion of number of defects in a product, the relationship between upper control
limit (UCL) and upper specification limit (USL) should be
(A) UCL < USL
(B) UCL > USL
(C) UCL = 2USL
(D) UCL = (USL)
3
Q. 26 ? Q. 55 carry two marks each.
Q.26
The maximum value of ) cos (sin 2 ) ( x x x f + = for x in [] ? , 0 is ____________
Q.27 Out of the following, the exact differential equation is
(A) 0 = + ? xdy ydx (B) 0 = + xdy ydx (C) 0 = ? xdy ydx (D) 0 = + xdy dx
Q.28
Let ? ? ] 4 , 1 [ : f be a continuous function such that 32 . 0 ) 1 ( = f , 125 . 0 ) 2 ( = f , 025 . 0 ) 3 ( = f
and 05 . 0 ) 4 ( = f . The value of the integral
?
4
1
) ( dx x f , accurate up to three decimal places,
obtained by Trapezoidal rule with n=3 is __________
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GATE 2015 TEXTILE ? TF
TF 1/8
Q. 1 ? Q. 25 carry one mark each.
Q.1
If 3 and 4 are two eigen values of
?
?
?
?
?
?
?
?
?
?
=
4
2
3
f e
d c
b a
A for some real numbers a, b, c, d, e, and f, then
the third eigen value of A is ________________
Q.2 If a continuous random variable X has probability density function
?
?
? ? ?
=
otherwise
x ax
x f
, 0
1 0 ,
) (
2
then the value of a
is ________
Q.3
The value of
x
x
x
sin
0
lim
?
is __________________
Q.4
If
?
?
?
?
?
?
?
?
?
?
?
?
=
12
1
0 0
0 4 0
0 0 3
A , then determinant of
1 ?
A
is __________________
Q.5
The number of linearly independent eigen vectors of the matrix
?
?
?
?
?
?
4 3
0 1
is ___________
Q.6 The gum in the raw silk filament is
(A) Wax (B) Lignin (C) Sericin (D) Fibroin
Q.7 For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is
(A) Acetone
(B) N,N? Dimethyl formamide
(C) Formic acid
(D) Aqueous sodium thiocyanate (55 wt%)
Q.8 Adipic acid is a monomer for the production of
(A) Poly(ethylene terephthalate)
(B) Nylon 66
(C) Nylon 64
(D) Nylon 610
Q.9 In melt spinning line, the melting of solid polymer and its homogenization takes place in
(A) Manifold
(B) Extruder
(C) Metering pump
(D) Quench duct
GATE 2015 TEXTILE ? TF
TF 2/8
Q.10 The blending technique that gives the most homogeneous mixing of fibres is
(A) Lap blending (B) Tuft blending (C) Sliver blending (D) Roving blending
Q.11 In a cotton comber, noil extraction increases
(A) With a decrease in detachment setting
(B) With an increase in pre-combing draft
(C) If majority of hooks are presented in leading direction
(D) With an increase in short fibres
Q.12 The bottom roller surface used for driving aprons in ringframe drafting system is
(A) Knurled
(B) Axially fluted
(C) Spirally fluted
(D) Smooth
Q.13 If the numerical value of yarn linear density expressed in Tex and that in English system is the
same, this value to the nearest integer is
(A) 30 (B) 28 (C) 24 (D) 22
Q.14 Patterning is most likely to occur in
(A) Precision winding (B) Random winding
(C) Step-precision winding (D) Pirn winding
Q.15 In cotton yarn sizing, the starch primarily acts as
(A) Binding agent (B) Lubricating agent (C) Antistatic agent (D) Antimicrobial agent
Q.16 Purl is a
(A) Woven structure (B) Nonwoven structure
(C) Braided structure (D) Knitted structure
Q.17 The technology/ies used for producing SMS fabric is/are
(A) Spunlace
(B) Spunlace and Meltblown
(C) Needlepunch
(D) Spunbond and Meltblown
Q.18 Jigger CANNOT be used for
(A) Dyeing
(B) Printing
(C) Washing
(D) Scouring
Q.19 In the context of effluent discharge, BOD means
(A) Bio-oxidative degradation
(B) Bio oxygen distress
(C) Biological oxygen demand
(D) Bacteria observed on disc
GATE 2015 TEXTILE ? TF
TF 3/8
Q.20 Milling is associated with the processing of
(A) Cotton fabric
(B) Silk fabric
(C) Jute fabric
(D) Wool fabric
Q.21 Dyed wool fabric standards are used for the evaluation of
(A) Wash fastness
(B) Perspiration fastness
(C) Sublimation fastness
(D) Light fastness
Q.22 The yarn tenacity (gf/tex) measured in lea form, compared to that measured in single yarn form is
(A) Always lower
(B) Always higher
(C) Always equal
(D) Higher or lower depending on yarn count
Q.23 The property that Kawabata Evaluation System (KES) DOES NOT measure is
(A) Shear rigidity
(B) Bending rigidity
(C) Compressional resilience
(D) Tensile strength
Q.24 On absorption of moisture, the thermal insulation of cotton fabric will
(A) Decrease
(B) Increase
(C) Remain the same
(D) First increase and then decrease
Q.25 For meeting the criterion of number of defects in a product, the relationship between upper control
limit (UCL) and upper specification limit (USL) should be
(A) UCL < USL
(B) UCL > USL
(C) UCL = 2USL
(D) UCL = (USL)
3
Q. 26 ? Q. 55 carry two marks each.
Q.26
The maximum value of ) cos (sin 2 ) ( x x x f + = for x in [] ? , 0 is ____________
Q.27 Out of the following, the exact differential equation is
(A) 0 = + ? xdy ydx (B) 0 = + xdy ydx (C) 0 = ? xdy ydx (D) 0 = + xdy dx
Q.28
Let ? ? ] 4 , 1 [ : f be a continuous function such that 32 . 0 ) 1 ( = f , 125 . 0 ) 2 ( = f , 025 . 0 ) 3 ( = f
and 05 . 0 ) 4 ( = f . The value of the integral
?
4
1
) ( dx x f , accurate up to three decimal places,
obtained by Trapezoidal rule with n=3 is __________
GATE 2015 TEXTILE ? TF
TF 4/8
Q.29
The normal vector to the surface
2 2
y x z + = at (1,1,1) is
(A) k j i
? ? ?
+ + (B) k j i
? ? ?
+ ? (C) k j i
? ? ?
+ ? ? (D) k j i
? ? ?
+ + ?
Q.30 Consider the analytical techniques in the Column I and the properties in Column II. Choose the
correct alternative from amongst A, B, C, and D
Column I
Column II
P FTIR 1 Orientation
Q Differential scanning calorimetry 2 Functional groups
R Density 3 Crystallinity
S Birefringence 4 Crystallization temperature
(A) P-2, Q-4, R-3, S-1
(B) P-2, Q-1, R-4, S-3
(C) P-3, Q-4, R-1, S-2
(D) P-3, Q-2, R-4, S-1
Q.31 If T
g
, T
m
, and T
c
represent the glass transition, melting and crystallization temperature, respectively,
the correct relationship is
(A) T
g
< T
c
< T
m
(B) T
g
< T
m
< T
c
(C) T
c
< T
g
< T
m
(D) T
m
< T
g
< T
c
Q.32 The correct sequence of unit operations employed in production of viscose rayon is
(A) Ageing - Steeping - Xanthation - Ripening
(B) Ageing - Steeping - Ripening - Xanthation
(C) Steeping - Ageing - Ripening - Xanthation
(D) Steeping - Ageing - Xanthation - Ripening
Q.33 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] After polymerization of caprolactum, thorough washing of polymer with water is necessary to
remove unreacted monomer and its oligomers.
[r] Otherwise, hydrolytic degradation of polymer would occur during melt spinning.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
FirstRanker.com - FirstRanker's Choice
GATE 2015 TEXTILE ? TF
TF 1/8
Q. 1 ? Q. 25 carry one mark each.
Q.1
If 3 and 4 are two eigen values of
?
?
?
?
?
?
?
?
?
?
=
4
2
3
f e
d c
b a
A for some real numbers a, b, c, d, e, and f, then
the third eigen value of A is ________________
Q.2 If a continuous random variable X has probability density function
?
?
? ? ?
=
otherwise
x ax
x f
, 0
1 0 ,
) (
2
then the value of a
is ________
Q.3
The value of
x
x
x
sin
0
lim
?
is __________________
Q.4
If
?
?
?
?
?
?
?
?
?
?
?
?
=
12
1
0 0
0 4 0
0 0 3
A , then determinant of
1 ?
A
is __________________
Q.5
The number of linearly independent eigen vectors of the matrix
?
?
?
?
?
?
4 3
0 1
is ___________
Q.6 The gum in the raw silk filament is
(A) Wax (B) Lignin (C) Sericin (D) Fibroin
Q.7 For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is
(A) Acetone
(B) N,N? Dimethyl formamide
(C) Formic acid
(D) Aqueous sodium thiocyanate (55 wt%)
Q.8 Adipic acid is a monomer for the production of
(A) Poly(ethylene terephthalate)
(B) Nylon 66
(C) Nylon 64
(D) Nylon 610
Q.9 In melt spinning line, the melting of solid polymer and its homogenization takes place in
(A) Manifold
(B) Extruder
(C) Metering pump
(D) Quench duct
GATE 2015 TEXTILE ? TF
TF 2/8
Q.10 The blending technique that gives the most homogeneous mixing of fibres is
(A) Lap blending (B) Tuft blending (C) Sliver blending (D) Roving blending
Q.11 In a cotton comber, noil extraction increases
(A) With a decrease in detachment setting
(B) With an increase in pre-combing draft
(C) If majority of hooks are presented in leading direction
(D) With an increase in short fibres
Q.12 The bottom roller surface used for driving aprons in ringframe drafting system is
(A) Knurled
(B) Axially fluted
(C) Spirally fluted
(D) Smooth
Q.13 If the numerical value of yarn linear density expressed in Tex and that in English system is the
same, this value to the nearest integer is
(A) 30 (B) 28 (C) 24 (D) 22
Q.14 Patterning is most likely to occur in
(A) Precision winding (B) Random winding
(C) Step-precision winding (D) Pirn winding
Q.15 In cotton yarn sizing, the starch primarily acts as
(A) Binding agent (B) Lubricating agent (C) Antistatic agent (D) Antimicrobial agent
Q.16 Purl is a
(A) Woven structure (B) Nonwoven structure
(C) Braided structure (D) Knitted structure
Q.17 The technology/ies used for producing SMS fabric is/are
(A) Spunlace
(B) Spunlace and Meltblown
(C) Needlepunch
(D) Spunbond and Meltblown
Q.18 Jigger CANNOT be used for
(A) Dyeing
(B) Printing
(C) Washing
(D) Scouring
Q.19 In the context of effluent discharge, BOD means
(A) Bio-oxidative degradation
(B) Bio oxygen distress
(C) Biological oxygen demand
(D) Bacteria observed on disc
GATE 2015 TEXTILE ? TF
TF 3/8
Q.20 Milling is associated with the processing of
(A) Cotton fabric
(B) Silk fabric
(C) Jute fabric
(D) Wool fabric
Q.21 Dyed wool fabric standards are used for the evaluation of
(A) Wash fastness
(B) Perspiration fastness
(C) Sublimation fastness
(D) Light fastness
Q.22 The yarn tenacity (gf/tex) measured in lea form, compared to that measured in single yarn form is
(A) Always lower
(B) Always higher
(C) Always equal
(D) Higher or lower depending on yarn count
Q.23 The property that Kawabata Evaluation System (KES) DOES NOT measure is
(A) Shear rigidity
(B) Bending rigidity
(C) Compressional resilience
(D) Tensile strength
Q.24 On absorption of moisture, the thermal insulation of cotton fabric will
(A) Decrease
(B) Increase
(C) Remain the same
(D) First increase and then decrease
Q.25 For meeting the criterion of number of defects in a product, the relationship between upper control
limit (UCL) and upper specification limit (USL) should be
(A) UCL < USL
(B) UCL > USL
(C) UCL = 2USL
(D) UCL = (USL)
3
Q. 26 ? Q. 55 carry two marks each.
Q.26
The maximum value of ) cos (sin 2 ) ( x x x f + = for x in [] ? , 0 is ____________
Q.27 Out of the following, the exact differential equation is
(A) 0 = + ? xdy ydx (B) 0 = + xdy ydx (C) 0 = ? xdy ydx (D) 0 = + xdy dx
Q.28
Let ? ? ] 4 , 1 [ : f be a continuous function such that 32 . 0 ) 1 ( = f , 125 . 0 ) 2 ( = f , 025 . 0 ) 3 ( = f
and 05 . 0 ) 4 ( = f . The value of the integral
?
4
1
) ( dx x f , accurate up to three decimal places,
obtained by Trapezoidal rule with n=3 is __________
GATE 2015 TEXTILE ? TF
TF 4/8
Q.29
The normal vector to the surface
2 2
y x z + = at (1,1,1) is
(A) k j i
? ? ?
+ + (B) k j i
? ? ?
+ ? (C) k j i
? ? ?
+ ? ? (D) k j i
? ? ?
+ + ?
Q.30 Consider the analytical techniques in the Column I and the properties in Column II. Choose the
correct alternative from amongst A, B, C, and D
Column I
Column II
P FTIR 1 Orientation
Q Differential scanning calorimetry 2 Functional groups
R Density 3 Crystallinity
S Birefringence 4 Crystallization temperature
(A) P-2, Q-4, R-3, S-1
(B) P-2, Q-1, R-4, S-3
(C) P-3, Q-4, R-1, S-2
(D) P-3, Q-2, R-4, S-1
Q.31 If T
g
, T
m
, and T
c
represent the glass transition, melting and crystallization temperature, respectively,
the correct relationship is
(A) T
g
< T
c
< T
m
(B) T
g
< T
m
< T
c
(C) T
c
< T
g
< T
m
(D) T
m
< T
g
< T
c
Q.32 The correct sequence of unit operations employed in production of viscose rayon is
(A) Ageing - Steeping - Xanthation - Ripening
(B) Ageing - Steeping - Ripening - Xanthation
(C) Steeping - Ageing - Ripening - Xanthation
(D) Steeping - Ageing - Xanthation - Ripening
Q.33 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] After polymerization of caprolactum, thorough washing of polymer with water is necessary to
remove unreacted monomer and its oligomers.
[r] Otherwise, hydrolytic degradation of polymer would occur during melt spinning.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
GATE 2015 TEXTILE ? TF
TF 5/8
Q.34 Consider the fibres in Column I and the applications in Column II. Choose the correct alternative
from amongst A, B, C, and D
Column I
Column II
P Acrylic 1 Chemical filtration
Q Jute 2 Tire cord
R Nylon 3 Precursor for carbon fibre
S Polypropylene 4 Biodegradable sacks
(A) P-1, Q-4, R-2, S-3
(B) P-2, Q-4, R-3, S-1
(C) P-3, Q-4, R-2, S-1
(D) P-3, Q-4, R-1, S-2
Q.35 Two polyester and six viscose rayon slivers of same count are blended on a drawframe. In the
second passage, four slivers from first passage are further blended with two combed cotton slivers
of the same count. The viscose (%) in the final sliver to the nearest integer is ___________
Q.36 In ring spinning, the tension in yarn is the maximum
(A) Between the lappet guide and front roller
(B) Where the balloon radius is the maximum
(C) In winding zone
(D) Just below the lappet guide
Q.37 A core spun yarn of 30 tex is to be produced with 10% core by weight. If the cotton roving count is
540 tex, the required draft on the ringframe will be _____________
Q.38 If the spindle speed of ringframe is 15000 rpm and the traveler speed at the maximum bobbin
diameter of 50 mm is 0.8% less than that of the spindle. The yarn delivery rate (m/min), to the
nearest integer, will be ___________
Q.39 A rotor of 2 inch diameter is spinning a yarn of 16
s
Ne. If the twist multiplier is 5 and the fibre
linear density is 0.1 tex, the average fibre flow through the transport channel, to the nearest integer,
will be ____________
Q.40 The groove drum in a random winder makes five revolutions for one double traverse. If the drum
and package diameters are 10 cm and 5 cm, respectively, the wind per double traverse would
be__________
Q.41 A 500-end double-lift, single-cylinder jacquard has
(A) 500 hooks and 500 needles
(B) 500 hooks and 1000 needles
(C) 1000 hooks and 500 needles
(D) 1000 hooks and 1000 needles
Q.42 A shuttle loom is running at 240 picks per minute. The angular velocity of bottom shaft in radian
per second is n ?. The value of n is ___________________
Q.43 In an air-jet loom, if the weft yarn diameter is increased by 10%, keeping the linear density
constant, the percent increase in the drag force would be ____________
FirstRanker.com - FirstRanker's Choice
GATE 2015 TEXTILE ? TF
TF 1/8
Q. 1 ? Q. 25 carry one mark each.
Q.1
If 3 and 4 are two eigen values of
?
?
?
?
?
?
?
?
?
?
=
4
2
3
f e
d c
b a
A for some real numbers a, b, c, d, e, and f, then
the third eigen value of A is ________________
Q.2 If a continuous random variable X has probability density function
?
?
? ? ?
=
otherwise
x ax
x f
, 0
1 0 ,
) (
2
then the value of a
is ________
Q.3
The value of
x
x
x
sin
0
lim
?
is __________________
Q.4
If
?
?
?
?
?
?
?
?
?
?
?
?
=
12
1
0 0
0 4 0
0 0 3
A , then determinant of
1 ?
A
is __________________
Q.5
The number of linearly independent eigen vectors of the matrix
?
?
?
?
?
?
4 3
0 1
is ___________
Q.6 The gum in the raw silk filament is
(A) Wax (B) Lignin (C) Sericin (D) Fibroin
Q.7 For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is
(A) Acetone
(B) N,N? Dimethyl formamide
(C) Formic acid
(D) Aqueous sodium thiocyanate (55 wt%)
Q.8 Adipic acid is a monomer for the production of
(A) Poly(ethylene terephthalate)
(B) Nylon 66
(C) Nylon 64
(D) Nylon 610
Q.9 In melt spinning line, the melting of solid polymer and its homogenization takes place in
(A) Manifold
(B) Extruder
(C) Metering pump
(D) Quench duct
GATE 2015 TEXTILE ? TF
TF 2/8
Q.10 The blending technique that gives the most homogeneous mixing of fibres is
(A) Lap blending (B) Tuft blending (C) Sliver blending (D) Roving blending
Q.11 In a cotton comber, noil extraction increases
(A) With a decrease in detachment setting
(B) With an increase in pre-combing draft
(C) If majority of hooks are presented in leading direction
(D) With an increase in short fibres
Q.12 The bottom roller surface used for driving aprons in ringframe drafting system is
(A) Knurled
(B) Axially fluted
(C) Spirally fluted
(D) Smooth
Q.13 If the numerical value of yarn linear density expressed in Tex and that in English system is the
same, this value to the nearest integer is
(A) 30 (B) 28 (C) 24 (D) 22
Q.14 Patterning is most likely to occur in
(A) Precision winding (B) Random winding
(C) Step-precision winding (D) Pirn winding
Q.15 In cotton yarn sizing, the starch primarily acts as
(A) Binding agent (B) Lubricating agent (C) Antistatic agent (D) Antimicrobial agent
Q.16 Purl is a
(A) Woven structure (B) Nonwoven structure
(C) Braided structure (D) Knitted structure
Q.17 The technology/ies used for producing SMS fabric is/are
(A) Spunlace
(B) Spunlace and Meltblown
(C) Needlepunch
(D) Spunbond and Meltblown
Q.18 Jigger CANNOT be used for
(A) Dyeing
(B) Printing
(C) Washing
(D) Scouring
Q.19 In the context of effluent discharge, BOD means
(A) Bio-oxidative degradation
(B) Bio oxygen distress
(C) Biological oxygen demand
(D) Bacteria observed on disc
GATE 2015 TEXTILE ? TF
TF 3/8
Q.20 Milling is associated with the processing of
(A) Cotton fabric
(B) Silk fabric
(C) Jute fabric
(D) Wool fabric
Q.21 Dyed wool fabric standards are used for the evaluation of
(A) Wash fastness
(B) Perspiration fastness
(C) Sublimation fastness
(D) Light fastness
Q.22 The yarn tenacity (gf/tex) measured in lea form, compared to that measured in single yarn form is
(A) Always lower
(B) Always higher
(C) Always equal
(D) Higher or lower depending on yarn count
Q.23 The property that Kawabata Evaluation System (KES) DOES NOT measure is
(A) Shear rigidity
(B) Bending rigidity
(C) Compressional resilience
(D) Tensile strength
Q.24 On absorption of moisture, the thermal insulation of cotton fabric will
(A) Decrease
(B) Increase
(C) Remain the same
(D) First increase and then decrease
Q.25 For meeting the criterion of number of defects in a product, the relationship between upper control
limit (UCL) and upper specification limit (USL) should be
(A) UCL < USL
(B) UCL > USL
(C) UCL = 2USL
(D) UCL = (USL)
3
Q. 26 ? Q. 55 carry two marks each.
Q.26
The maximum value of ) cos (sin 2 ) ( x x x f + = for x in [] ? , 0 is ____________
Q.27 Out of the following, the exact differential equation is
(A) 0 = + ? xdy ydx (B) 0 = + xdy ydx (C) 0 = ? xdy ydx (D) 0 = + xdy dx
Q.28
Let ? ? ] 4 , 1 [ : f be a continuous function such that 32 . 0 ) 1 ( = f , 125 . 0 ) 2 ( = f , 025 . 0 ) 3 ( = f
and 05 . 0 ) 4 ( = f . The value of the integral
?
4
1
) ( dx x f , accurate up to three decimal places,
obtained by Trapezoidal rule with n=3 is __________
GATE 2015 TEXTILE ? TF
TF 4/8
Q.29
The normal vector to the surface
2 2
y x z + = at (1,1,1) is
(A) k j i
? ? ?
+ + (B) k j i
? ? ?
+ ? (C) k j i
? ? ?
+ ? ? (D) k j i
? ? ?
+ + ?
Q.30 Consider the analytical techniques in the Column I and the properties in Column II. Choose the
correct alternative from amongst A, B, C, and D
Column I
Column II
P FTIR 1 Orientation
Q Differential scanning calorimetry 2 Functional groups
R Density 3 Crystallinity
S Birefringence 4 Crystallization temperature
(A) P-2, Q-4, R-3, S-1
(B) P-2, Q-1, R-4, S-3
(C) P-3, Q-4, R-1, S-2
(D) P-3, Q-2, R-4, S-1
Q.31 If T
g
, T
m
, and T
c
represent the glass transition, melting and crystallization temperature, respectively,
the correct relationship is
(A) T
g
< T
c
< T
m
(B) T
g
< T
m
< T
c
(C) T
c
< T
g
< T
m
(D) T
m
< T
g
< T
c
Q.32 The correct sequence of unit operations employed in production of viscose rayon is
(A) Ageing - Steeping - Xanthation - Ripening
(B) Ageing - Steeping - Ripening - Xanthation
(C) Steeping - Ageing - Ripening - Xanthation
(D) Steeping - Ageing - Xanthation - Ripening
Q.33 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] After polymerization of caprolactum, thorough washing of polymer with water is necessary to
remove unreacted monomer and its oligomers.
[r] Otherwise, hydrolytic degradation of polymer would occur during melt spinning.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
GATE 2015 TEXTILE ? TF
TF 5/8
Q.34 Consider the fibres in Column I and the applications in Column II. Choose the correct alternative
from amongst A, B, C, and D
Column I
Column II
P Acrylic 1 Chemical filtration
Q Jute 2 Tire cord
R Nylon 3 Precursor for carbon fibre
S Polypropylene 4 Biodegradable sacks
(A) P-1, Q-4, R-2, S-3
(B) P-2, Q-4, R-3, S-1
(C) P-3, Q-4, R-2, S-1
(D) P-3, Q-4, R-1, S-2
Q.35 Two polyester and six viscose rayon slivers of same count are blended on a drawframe. In the
second passage, four slivers from first passage are further blended with two combed cotton slivers
of the same count. The viscose (%) in the final sliver to the nearest integer is ___________
Q.36 In ring spinning, the tension in yarn is the maximum
(A) Between the lappet guide and front roller
(B) Where the balloon radius is the maximum
(C) In winding zone
(D) Just below the lappet guide
Q.37 A core spun yarn of 30 tex is to be produced with 10% core by weight. If the cotton roving count is
540 tex, the required draft on the ringframe will be _____________
Q.38 If the spindle speed of ringframe is 15000 rpm and the traveler speed at the maximum bobbin
diameter of 50 mm is 0.8% less than that of the spindle. The yarn delivery rate (m/min), to the
nearest integer, will be ___________
Q.39 A rotor of 2 inch diameter is spinning a yarn of 16
s
Ne. If the twist multiplier is 5 and the fibre
linear density is 0.1 tex, the average fibre flow through the transport channel, to the nearest integer,
will be ____________
Q.40 The groove drum in a random winder makes five revolutions for one double traverse. If the drum
and package diameters are 10 cm and 5 cm, respectively, the wind per double traverse would
be__________
Q.41 A 500-end double-lift, single-cylinder jacquard has
(A) 500 hooks and 500 needles
(B) 500 hooks and 1000 needles
(C) 1000 hooks and 500 needles
(D) 1000 hooks and 1000 needles
Q.42 A shuttle loom is running at 240 picks per minute. The angular velocity of bottom shaft in radian
per second is n ?. The value of n is ___________________
Q.43 In an air-jet loom, if the weft yarn diameter is increased by 10%, keeping the linear density
constant, the percent increase in the drag force would be ____________
GATE 2015 TEXTILE ? TF
TF 6/8
Q.44 For a fully relaxed knitted fabric, the wale constant (K
w
) and course constant (K
c
) are 4.2 and 5.5,
respectively. If the loop length is 0.5 cm, the loop density per cm
2
, to the nearest integer, would be
__________
Q.45 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] Cross-laid needlepunched nonwoven fabrics demonstrate higher tensile strength in machine
direction.
[r] In cross-laid nonwoven fabrics, the fibres are randomly oriented.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
Q.46 If [C
s
] and [C
f
] represent dye concentration in the bath and in the fibre, respectively, the isotherm
for dyeing of polyester with disperse dyes is represented by the figure
(A) (B)
(C) (D)
FirstRanker.com - FirstRanker's Choice
GATE 2015 TEXTILE ? TF
TF 1/8
Q. 1 ? Q. 25 carry one mark each.
Q.1
If 3 and 4 are two eigen values of
?
?
?
?
?
?
?
?
?
?
=
4
2
3
f e
d c
b a
A for some real numbers a, b, c, d, e, and f, then
the third eigen value of A is ________________
Q.2 If a continuous random variable X has probability density function
?
?
? ? ?
=
otherwise
x ax
x f
, 0
1 0 ,
) (
2
then the value of a
is ________
Q.3
The value of
x
x
x
sin
0
lim
?
is __________________
Q.4
If
?
?
?
?
?
?
?
?
?
?
?
?
=
12
1
0 0
0 4 0
0 0 3
A , then determinant of
1 ?
A
is __________________
Q.5
The number of linearly independent eigen vectors of the matrix
?
?
?
?
?
?
4 3
0 1
is ___________
Q.6 The gum in the raw silk filament is
(A) Wax (B) Lignin (C) Sericin (D) Fibroin
Q.7 For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is
(A) Acetone
(B) N,N? Dimethyl formamide
(C) Formic acid
(D) Aqueous sodium thiocyanate (55 wt%)
Q.8 Adipic acid is a monomer for the production of
(A) Poly(ethylene terephthalate)
(B) Nylon 66
(C) Nylon 64
(D) Nylon 610
Q.9 In melt spinning line, the melting of solid polymer and its homogenization takes place in
(A) Manifold
(B) Extruder
(C) Metering pump
(D) Quench duct
GATE 2015 TEXTILE ? TF
TF 2/8
Q.10 The blending technique that gives the most homogeneous mixing of fibres is
(A) Lap blending (B) Tuft blending (C) Sliver blending (D) Roving blending
Q.11 In a cotton comber, noil extraction increases
(A) With a decrease in detachment setting
(B) With an increase in pre-combing draft
(C) If majority of hooks are presented in leading direction
(D) With an increase in short fibres
Q.12 The bottom roller surface used for driving aprons in ringframe drafting system is
(A) Knurled
(B) Axially fluted
(C) Spirally fluted
(D) Smooth
Q.13 If the numerical value of yarn linear density expressed in Tex and that in English system is the
same, this value to the nearest integer is
(A) 30 (B) 28 (C) 24 (D) 22
Q.14 Patterning is most likely to occur in
(A) Precision winding (B) Random winding
(C) Step-precision winding (D) Pirn winding
Q.15 In cotton yarn sizing, the starch primarily acts as
(A) Binding agent (B) Lubricating agent (C) Antistatic agent (D) Antimicrobial agent
Q.16 Purl is a
(A) Woven structure (B) Nonwoven structure
(C) Braided structure (D) Knitted structure
Q.17 The technology/ies used for producing SMS fabric is/are
(A) Spunlace
(B) Spunlace and Meltblown
(C) Needlepunch
(D) Spunbond and Meltblown
Q.18 Jigger CANNOT be used for
(A) Dyeing
(B) Printing
(C) Washing
(D) Scouring
Q.19 In the context of effluent discharge, BOD means
(A) Bio-oxidative degradation
(B) Bio oxygen distress
(C) Biological oxygen demand
(D) Bacteria observed on disc
GATE 2015 TEXTILE ? TF
TF 3/8
Q.20 Milling is associated with the processing of
(A) Cotton fabric
(B) Silk fabric
(C) Jute fabric
(D) Wool fabric
Q.21 Dyed wool fabric standards are used for the evaluation of
(A) Wash fastness
(B) Perspiration fastness
(C) Sublimation fastness
(D) Light fastness
Q.22 The yarn tenacity (gf/tex) measured in lea form, compared to that measured in single yarn form is
(A) Always lower
(B) Always higher
(C) Always equal
(D) Higher or lower depending on yarn count
Q.23 The property that Kawabata Evaluation System (KES) DOES NOT measure is
(A) Shear rigidity
(B) Bending rigidity
(C) Compressional resilience
(D) Tensile strength
Q.24 On absorption of moisture, the thermal insulation of cotton fabric will
(A) Decrease
(B) Increase
(C) Remain the same
(D) First increase and then decrease
Q.25 For meeting the criterion of number of defects in a product, the relationship between upper control
limit (UCL) and upper specification limit (USL) should be
(A) UCL < USL
(B) UCL > USL
(C) UCL = 2USL
(D) UCL = (USL)
3
Q. 26 ? Q. 55 carry two marks each.
Q.26
The maximum value of ) cos (sin 2 ) ( x x x f + = for x in [] ? , 0 is ____________
Q.27 Out of the following, the exact differential equation is
(A) 0 = + ? xdy ydx (B) 0 = + xdy ydx (C) 0 = ? xdy ydx (D) 0 = + xdy dx
Q.28
Let ? ? ] 4 , 1 [ : f be a continuous function such that 32 . 0 ) 1 ( = f , 125 . 0 ) 2 ( = f , 025 . 0 ) 3 ( = f
and 05 . 0 ) 4 ( = f . The value of the integral
?
4
1
) ( dx x f , accurate up to three decimal places,
obtained by Trapezoidal rule with n=3 is __________
GATE 2015 TEXTILE ? TF
TF 4/8
Q.29
The normal vector to the surface
2 2
y x z + = at (1,1,1) is
(A) k j i
? ? ?
+ + (B) k j i
? ? ?
+ ? (C) k j i
? ? ?
+ ? ? (D) k j i
? ? ?
+ + ?
Q.30 Consider the analytical techniques in the Column I and the properties in Column II. Choose the
correct alternative from amongst A, B, C, and D
Column I
Column II
P FTIR 1 Orientation
Q Differential scanning calorimetry 2 Functional groups
R Density 3 Crystallinity
S Birefringence 4 Crystallization temperature
(A) P-2, Q-4, R-3, S-1
(B) P-2, Q-1, R-4, S-3
(C) P-3, Q-4, R-1, S-2
(D) P-3, Q-2, R-4, S-1
Q.31 If T
g
, T
m
, and T
c
represent the glass transition, melting and crystallization temperature, respectively,
the correct relationship is
(A) T
g
< T
c
< T
m
(B) T
g
< T
m
< T
c
(C) T
c
< T
g
< T
m
(D) T
m
< T
g
< T
c
Q.32 The correct sequence of unit operations employed in production of viscose rayon is
(A) Ageing - Steeping - Xanthation - Ripening
(B) Ageing - Steeping - Ripening - Xanthation
(C) Steeping - Ageing - Ripening - Xanthation
(D) Steeping - Ageing - Xanthation - Ripening
Q.33 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] After polymerization of caprolactum, thorough washing of polymer with water is necessary to
remove unreacted monomer and its oligomers.
[r] Otherwise, hydrolytic degradation of polymer would occur during melt spinning.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
GATE 2015 TEXTILE ? TF
TF 5/8
Q.34 Consider the fibres in Column I and the applications in Column II. Choose the correct alternative
from amongst A, B, C, and D
Column I
Column II
P Acrylic 1 Chemical filtration
Q Jute 2 Tire cord
R Nylon 3 Precursor for carbon fibre
S Polypropylene 4 Biodegradable sacks
(A) P-1, Q-4, R-2, S-3
(B) P-2, Q-4, R-3, S-1
(C) P-3, Q-4, R-2, S-1
(D) P-3, Q-4, R-1, S-2
Q.35 Two polyester and six viscose rayon slivers of same count are blended on a drawframe. In the
second passage, four slivers from first passage are further blended with two combed cotton slivers
of the same count. The viscose (%) in the final sliver to the nearest integer is ___________
Q.36 In ring spinning, the tension in yarn is the maximum
(A) Between the lappet guide and front roller
(B) Where the balloon radius is the maximum
(C) In winding zone
(D) Just below the lappet guide
Q.37 A core spun yarn of 30 tex is to be produced with 10% core by weight. If the cotton roving count is
540 tex, the required draft on the ringframe will be _____________
Q.38 If the spindle speed of ringframe is 15000 rpm and the traveler speed at the maximum bobbin
diameter of 50 mm is 0.8% less than that of the spindle. The yarn delivery rate (m/min), to the
nearest integer, will be ___________
Q.39 A rotor of 2 inch diameter is spinning a yarn of 16
s
Ne. If the twist multiplier is 5 and the fibre
linear density is 0.1 tex, the average fibre flow through the transport channel, to the nearest integer,
will be ____________
Q.40 The groove drum in a random winder makes five revolutions for one double traverse. If the drum
and package diameters are 10 cm and 5 cm, respectively, the wind per double traverse would
be__________
Q.41 A 500-end double-lift, single-cylinder jacquard has
(A) 500 hooks and 500 needles
(B) 500 hooks and 1000 needles
(C) 1000 hooks and 500 needles
(D) 1000 hooks and 1000 needles
Q.42 A shuttle loom is running at 240 picks per minute. The angular velocity of bottom shaft in radian
per second is n ?. The value of n is ___________________
Q.43 In an air-jet loom, if the weft yarn diameter is increased by 10%, keeping the linear density
constant, the percent increase in the drag force would be ____________
GATE 2015 TEXTILE ? TF
TF 6/8
Q.44 For a fully relaxed knitted fabric, the wale constant (K
w
) and course constant (K
c
) are 4.2 and 5.5,
respectively. If the loop length is 0.5 cm, the loop density per cm
2
, to the nearest integer, would be
__________
Q.45 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] Cross-laid needlepunched nonwoven fabrics demonstrate higher tensile strength in machine
direction.
[r] In cross-laid nonwoven fabrics, the fibres are randomly oriented.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
Q.46 If [C
s
] and [C
f
] represent dye concentration in the bath and in the fibre, respectively, the isotherm
for dyeing of polyester with disperse dyes is represented by the figure
(A) (B)
(C) (D)
GATE 2015 TEXTILE ? TF
TF 7/8
Q.47 A small hard particle is stuck in the doctor blade of a roller printing machine. The printing fault on
the fabric, as a result of this, is represented by the figure
(A)
(B)
(C)
(D)
Q.48 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] Millions of shades can be produced through ink-jet printing with only four basic colours.
[r] The colours get mixed in appropriate proportions before jetting onto the fabric.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
Q.49 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] Fluorochemicals impart very high water repellency.
[r] Fluorochemicals significantly reduce the surface energy of the treated substrate.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
FirstRanker.com - FirstRanker's Choice
GATE 2015 TEXTILE ? TF
TF 1/8
Q. 1 ? Q. 25 carry one mark each.
Q.1
If 3 and 4 are two eigen values of
?
?
?
?
?
?
?
?
?
?
=
4
2
3
f e
d c
b a
A for some real numbers a, b, c, d, e, and f, then
the third eigen value of A is ________________
Q.2 If a continuous random variable X has probability density function
?
?
? ? ?
=
otherwise
x ax
x f
, 0
1 0 ,
) (
2
then the value of a
is ________
Q.3
The value of
x
x
x
sin
0
lim
?
is __________________
Q.4
If
?
?
?
?
?
?
?
?
?
?
?
?
=
12
1
0 0
0 4 0
0 0 3
A , then determinant of
1 ?
A
is __________________
Q.5
The number of linearly independent eigen vectors of the matrix
?
?
?
?
?
?
4 3
0 1
is ___________
Q.6 The gum in the raw silk filament is
(A) Wax (B) Lignin (C) Sericin (D) Fibroin
Q.7 For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is
(A) Acetone
(B) N,N? Dimethyl formamide
(C) Formic acid
(D) Aqueous sodium thiocyanate (55 wt%)
Q.8 Adipic acid is a monomer for the production of
(A) Poly(ethylene terephthalate)
(B) Nylon 66
(C) Nylon 64
(D) Nylon 610
Q.9 In melt spinning line, the melting of solid polymer and its homogenization takes place in
(A) Manifold
(B) Extruder
(C) Metering pump
(D) Quench duct
GATE 2015 TEXTILE ? TF
TF 2/8
Q.10 The blending technique that gives the most homogeneous mixing of fibres is
(A) Lap blending (B) Tuft blending (C) Sliver blending (D) Roving blending
Q.11 In a cotton comber, noil extraction increases
(A) With a decrease in detachment setting
(B) With an increase in pre-combing draft
(C) If majority of hooks are presented in leading direction
(D) With an increase in short fibres
Q.12 The bottom roller surface used for driving aprons in ringframe drafting system is
(A) Knurled
(B) Axially fluted
(C) Spirally fluted
(D) Smooth
Q.13 If the numerical value of yarn linear density expressed in Tex and that in English system is the
same, this value to the nearest integer is
(A) 30 (B) 28 (C) 24 (D) 22
Q.14 Patterning is most likely to occur in
(A) Precision winding (B) Random winding
(C) Step-precision winding (D) Pirn winding
Q.15 In cotton yarn sizing, the starch primarily acts as
(A) Binding agent (B) Lubricating agent (C) Antistatic agent (D) Antimicrobial agent
Q.16 Purl is a
(A) Woven structure (B) Nonwoven structure
(C) Braided structure (D) Knitted structure
Q.17 The technology/ies used for producing SMS fabric is/are
(A) Spunlace
(B) Spunlace and Meltblown
(C) Needlepunch
(D) Spunbond and Meltblown
Q.18 Jigger CANNOT be used for
(A) Dyeing
(B) Printing
(C) Washing
(D) Scouring
Q.19 In the context of effluent discharge, BOD means
(A) Bio-oxidative degradation
(B) Bio oxygen distress
(C) Biological oxygen demand
(D) Bacteria observed on disc
GATE 2015 TEXTILE ? TF
TF 3/8
Q.20 Milling is associated with the processing of
(A) Cotton fabric
(B) Silk fabric
(C) Jute fabric
(D) Wool fabric
Q.21 Dyed wool fabric standards are used for the evaluation of
(A) Wash fastness
(B) Perspiration fastness
(C) Sublimation fastness
(D) Light fastness
Q.22 The yarn tenacity (gf/tex) measured in lea form, compared to that measured in single yarn form is
(A) Always lower
(B) Always higher
(C) Always equal
(D) Higher or lower depending on yarn count
Q.23 The property that Kawabata Evaluation System (KES) DOES NOT measure is
(A) Shear rigidity
(B) Bending rigidity
(C) Compressional resilience
(D) Tensile strength
Q.24 On absorption of moisture, the thermal insulation of cotton fabric will
(A) Decrease
(B) Increase
(C) Remain the same
(D) First increase and then decrease
Q.25 For meeting the criterion of number of defects in a product, the relationship between upper control
limit (UCL) and upper specification limit (USL) should be
(A) UCL < USL
(B) UCL > USL
(C) UCL = 2USL
(D) UCL = (USL)
3
Q. 26 ? Q. 55 carry two marks each.
Q.26
The maximum value of ) cos (sin 2 ) ( x x x f + = for x in [] ? , 0 is ____________
Q.27 Out of the following, the exact differential equation is
(A) 0 = + ? xdy ydx (B) 0 = + xdy ydx (C) 0 = ? xdy ydx (D) 0 = + xdy dx
Q.28
Let ? ? ] 4 , 1 [ : f be a continuous function such that 32 . 0 ) 1 ( = f , 125 . 0 ) 2 ( = f , 025 . 0 ) 3 ( = f
and 05 . 0 ) 4 ( = f . The value of the integral
?
4
1
) ( dx x f , accurate up to three decimal places,
obtained by Trapezoidal rule with n=3 is __________
GATE 2015 TEXTILE ? TF
TF 4/8
Q.29
The normal vector to the surface
2 2
y x z + = at (1,1,1) is
(A) k j i
? ? ?
+ + (B) k j i
? ? ?
+ ? (C) k j i
? ? ?
+ ? ? (D) k j i
? ? ?
+ + ?
Q.30 Consider the analytical techniques in the Column I and the properties in Column II. Choose the
correct alternative from amongst A, B, C, and D
Column I
Column II
P FTIR 1 Orientation
Q Differential scanning calorimetry 2 Functional groups
R Density 3 Crystallinity
S Birefringence 4 Crystallization temperature
(A) P-2, Q-4, R-3, S-1
(B) P-2, Q-1, R-4, S-3
(C) P-3, Q-4, R-1, S-2
(D) P-3, Q-2, R-4, S-1
Q.31 If T
g
, T
m
, and T
c
represent the glass transition, melting and crystallization temperature, respectively,
the correct relationship is
(A) T
g
< T
c
< T
m
(B) T
g
< T
m
< T
c
(C) T
c
< T
g
< T
m
(D) T
m
< T
g
< T
c
Q.32 The correct sequence of unit operations employed in production of viscose rayon is
(A) Ageing - Steeping - Xanthation - Ripening
(B) Ageing - Steeping - Ripening - Xanthation
(C) Steeping - Ageing - Ripening - Xanthation
(D) Steeping - Ageing - Xanthation - Ripening
Q.33 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] After polymerization of caprolactum, thorough washing of polymer with water is necessary to
remove unreacted monomer and its oligomers.
[r] Otherwise, hydrolytic degradation of polymer would occur during melt spinning.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
GATE 2015 TEXTILE ? TF
TF 5/8
Q.34 Consider the fibres in Column I and the applications in Column II. Choose the correct alternative
from amongst A, B, C, and D
Column I
Column II
P Acrylic 1 Chemical filtration
Q Jute 2 Tire cord
R Nylon 3 Precursor for carbon fibre
S Polypropylene 4 Biodegradable sacks
(A) P-1, Q-4, R-2, S-3
(B) P-2, Q-4, R-3, S-1
(C) P-3, Q-4, R-2, S-1
(D) P-3, Q-4, R-1, S-2
Q.35 Two polyester and six viscose rayon slivers of same count are blended on a drawframe. In the
second passage, four slivers from first passage are further blended with two combed cotton slivers
of the same count. The viscose (%) in the final sliver to the nearest integer is ___________
Q.36 In ring spinning, the tension in yarn is the maximum
(A) Between the lappet guide and front roller
(B) Where the balloon radius is the maximum
(C) In winding zone
(D) Just below the lappet guide
Q.37 A core spun yarn of 30 tex is to be produced with 10% core by weight. If the cotton roving count is
540 tex, the required draft on the ringframe will be _____________
Q.38 If the spindle speed of ringframe is 15000 rpm and the traveler speed at the maximum bobbin
diameter of 50 mm is 0.8% less than that of the spindle. The yarn delivery rate (m/min), to the
nearest integer, will be ___________
Q.39 A rotor of 2 inch diameter is spinning a yarn of 16
s
Ne. If the twist multiplier is 5 and the fibre
linear density is 0.1 tex, the average fibre flow through the transport channel, to the nearest integer,
will be ____________
Q.40 The groove drum in a random winder makes five revolutions for one double traverse. If the drum
and package diameters are 10 cm and 5 cm, respectively, the wind per double traverse would
be__________
Q.41 A 500-end double-lift, single-cylinder jacquard has
(A) 500 hooks and 500 needles
(B) 500 hooks and 1000 needles
(C) 1000 hooks and 500 needles
(D) 1000 hooks and 1000 needles
Q.42 A shuttle loom is running at 240 picks per minute. The angular velocity of bottom shaft in radian
per second is n ?. The value of n is ___________________
Q.43 In an air-jet loom, if the weft yarn diameter is increased by 10%, keeping the linear density
constant, the percent increase in the drag force would be ____________
GATE 2015 TEXTILE ? TF
TF 6/8
Q.44 For a fully relaxed knitted fabric, the wale constant (K
w
) and course constant (K
c
) are 4.2 and 5.5,
respectively. If the loop length is 0.5 cm, the loop density per cm
2
, to the nearest integer, would be
__________
Q.45 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] Cross-laid needlepunched nonwoven fabrics demonstrate higher tensile strength in machine
direction.
[r] In cross-laid nonwoven fabrics, the fibres are randomly oriented.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
Q.46 If [C
s
] and [C
f
] represent dye concentration in the bath and in the fibre, respectively, the isotherm
for dyeing of polyester with disperse dyes is represented by the figure
(A) (B)
(C) (D)
GATE 2015 TEXTILE ? TF
TF 7/8
Q.47 A small hard particle is stuck in the doctor blade of a roller printing machine. The printing fault on
the fabric, as a result of this, is represented by the figure
(A)
(B)
(C)
(D)
Q.48 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] Millions of shades can be produced through ink-jet printing with only four basic colours.
[r] The colours get mixed in appropriate proportions before jetting onto the fabric.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
Q.49 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] Fluorochemicals impart very high water repellency.
[r] Fluorochemicals significantly reduce the surface energy of the treated substrate.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
GATE 2015 TEXTILE ? TF
TF 8/8
Q.50 Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst
A, B, C, and D.
[a] In the context of foam finishing, the narrow size distribution of foam cells increases the half life
of foam.
[r] The rate of coalescing and collapsing of foam cells is low in this case.
(A) [a] is right and [r] is wrong
(B) [a] is right and [r] is right
(C) [a] is wrong and [r] is wrong
(D) [a] is wrong and [r] is right
Q.51 For a typical yarn tensile test, force (F) in Newton and elongation (e) in cm are related as under
= 2 + 4 + 3
If the yarn fails at an elongation of 3 cm, the work of rupture in N-m, accurate up to first decimal
place is_____________
Q.52 Choose the INCORRECT statement from amongst the A, B, C, and D
(A) Crease recovery is higher for thick and dense fabric
(B) Tear strength of fabric improves with greater float length
(C) Strength CV of yarn does not affect the weaveability
(D) Higher drape coefficient indicates stiffer fabric
Q.53 The unique ability of woven fabric to drape in multiple curvatures is mainly due to
(A) High tensile modulus
(B) Low shear rigidity
(C) Low compressibility
(D) High bending rigidity
Q.54 The relationship between 50% span length of fibre (L
1
) and 2.5% span length of fibre (L
2
) for a
given cotton variety is given by
=
2
+ 5
If standard deviation (SD) of L
2
is 4 mm, that of the L
1
, in mm, would be_____________
Q.55 The correlation coefficient (r) between two variables is 0.9. The unexplained variation (%) is
______________
END OF THE QUESTION PAPER
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This post was last modified on 19 December 2019