Textile Engineering Gate 2015 Questions with Answer

Ques 40 GATE 2015


Adipic acid is a monomer for the production of

A

Poly(ethylene terephthalate)

B

Nylon 66

C

Nylon 64

D

Nylon 610


(b) is the correct answer.

Ques 41 GATE 2015


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


(b) is the correct answer.

Ques 42 GATE 2015


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


(c) is the correct answer.

Ques 43 GATE 2015


If Tg, Tm, and Tc represent the glass transition, melting, and crystallization temperature, respectively, the correct relationship is

A

Tg < Tc < Tm

B

Tg < Tm < Tc

C

Tc < Tg < Tm

D

Tm < Tg < Tc


(a) is the correct answer.

Ques 44 GATE 2015


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


(d) is the correct answer.

Ques 45 GATE 2015


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


(b) is the correct answer.

Ques 46 GATE 2015


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 3 Precursor for carbon fibre
Q Jute 4 Biodegradable sacks
R Nylon 2 Tire cord
S Polypropylene 1 Chemical filtration

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


(d) is the correct answer.

Ques 47 GATE 2015


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


(a) is the correct answer.

Ques 48 GATE 2015


The property that Kawabata Evaluation System (KES) DOES NOT measure is

A

Shear rigidity

B

Bending rigidity

C

Compressional resilience

D

Tensile strength


(d) is the correct answer.

Ques 49 GATE 2015


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


(b) is the correct answer.

Ques 50 GATE 2015


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


(b) is the correct answer.

Ques 51 GATE 2015


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 2 Functional groups
Q Differential scanning calorimetry 4 Crystallization temperature
R Density 3 Crystallinity
S Birefringence 1 Orientation

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


(a) is the correct answer.

Ques 52 GATE 2015


For a typical yarn tensile test, force (F) in Newton and elongation (e) in cm are related as under
F = 2 + 4e + 3e²
. If the yarn fails at an elongation of 3 cm, the work of rupture in N-m, accurate up to first decimal place, is


(0.5) is the correct answer.

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