Textile Engineering Gate 2016 Questions with Answer

Ques 40 GATE 2016


In which of the following polymerization methods the rate of reaction is very high and leads to uncontrolled polymerization?

A

Solution polymerization

B

Suspension polymerization

C

Bulk polymerization

D

Emulsion polymerization


(c) is the correct answer.

Ques 41 GATE 2016


Match the fibers listed in Column A with the compounds used in its manufacture listed in Column B. Choose the right answer from options A, B, C and D.

Column A Column B
P. Polypropylene 1. Carbon disulfide
Q. Polyethylene Terephthalate 2. Water
R. Nylon 6 3. Ziegler Natta catalyst
S. Viscose 4. Antimony trioxide & Antimony triacetate

A

P-4,Q-1,R-2,S-3

B

P-3,Q-4,R-2,S-1

C

P-3,Q-4,R-1,S-2

D

P-2,Q-1,R-3,S-4


(b) is the correct answer.

Ques 42 GATE 2016


Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst A, B, C and D.
[a] Both polyester and nylon filaments can be drawn at room temperature to achieve higher strength, modulus and dimensional stability.
[r] Tg of both polyester and nylon can be lowered to room temperature on absorption of atmospheric moisture.

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


(c) is the correct answer.

Ques 43 GATE 2016


Low pill PET fibres of a given denier can be produced by a combination of any two options listed below. Choose the right combination from A, B, C and D.
P. Lowering the IV (intrinsic viscosity) of the polymer
Q. Increasing the IV (intrinsic viscosity) of the polymer
R. Increasing the draw ratio
S. Decreasing the draw ratio

A

P,S

B

P,R

C

Q,S

D

Q,R


(a) is the correct answer.

Ques 44 GATE 2016


Match the fibre in Column A with the spinning technique used to manufacture in Column B. Choose the correct alternative from options A, B, C and D.

Column A Column B
P. Rayon 1. Dry-jet-wet spinning
Q. Aramid (Kevlar) 2. Gel Spinning
R. Ultra High Molecular weight Polyethylene 3. Melt spinning
S. Polyester 4. Wet Spinning

A

P-3,Q-1,R-2,S-4

B

P-1,Q-3,R-4,S-2

C

P-4,Q-2,R-1,S-3

D

P-4,Q-1,R-2,S-3


(d) is the correct answer.

Ques 45 GATE 2016


If 50 bales of 5 µg/inch, 20 bales of 3.5 µg/inch and 40 bales of 3.0 µg/inch cotton fibres are mixed, the resultant µg/inch of the mixed cotton is


(3.70: 3.85) is the correct answer.

Ques 46 GATE 2016


The diameter (mm) of a cotton yarn of 50 tex count and 0.45 packing density, assuming cotton fibre density to be 1.54 g/cm³ is


(0.29: 0.31) is the correct answer.

Ques 47 GATE 2016


The surface area per unit volume (mm⁻¹) of a circular polyester fibre of 1.5 denier fineness and 1.38 g/cm³ density, ignoring the fibre ends, is


(322:323) is the correct answer.

Ques 48 GATE 2016


The fibre packing density in a cotton bale of 170 kg weight and dimensions 1060 mm (L)×530 mm (W)×780 mm (H), assuming cotton fibre density to be 1.54 g/cm³ is


(0.24: 0.26) is the correct answer.

Ques 49 GATE 2016


Which one of the following stereo structures of polypropylene is (are) used for commercial fibre manufacture?

A

Atactic

B

Syndiotactic

C

Isotactic & Syndiotactic

D

Isotactic


(d) is the correct answer.

Ques 50 GATE 2016


Acrylic fibre has high glass transition temperature (Tg ≈ 100°C) primarily due to

A

Presence of polar side groups

B

Presence of bulky side groups

C

High crystallinity

D

Main chain stiffness


(a) is the correct answer.

Ques 51 GATE 2016


Which of the following textile strands is the finest?

A

30s Ne

B

30 denier

C

30 tex

D

30s Nm


(b) is the correct answer.

Ques 52 GATE 2016


A comb sorter diagram of cotton fibres is shown below:

where OM=0.5 OY, OA=0.25 OC, AN=0.5 AA' and OB=0.25 OD. The effective length is

A

AA'

B

BB'

C

CC'

D

DD'


(b) is the correct answer.

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