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Textile Engineering Gate 2009 Questions with Answer

Ques 40 GATE 2009

Consider the instruments of Kawabata Evaluation System in Group I and the properties measured in Group II and choose the correct alternatives from amongst A, B, C and D.

A

P-6, Q-4, R-1, S-5

B

P-3, Q-1, R-4, S-5

C

P-6, Q-2, R-4, S-3

D

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


(a) is the correct answer.

Ques 41 GATE 2009

Projected area of a 30 cm diameter fabric specimen placed on 20 cm diameter support plate of drape tester is 302 cm². Drape coefficient for this fabric is approximately

A

0.47

B

0.57

C

0.67

D

0.77


(c) is the correct answer.

Ques 42 GATE 2009

99% confidence range of the mean yarn strength based on 64 test samples is ± 8. The number of test samples required to obtain 99% confidence range of ± 4 of the yarn strength will be

A

64

B

128

C

256

D

512


(c) is the correct answer.

Ques 43 GATE 2009

The relationship between percent moisture regain (R) and percent moisture content (M) is

A

M = R / (1 + (R/100))

B

M = R / (1 + R)

C

R = M / (1 + (M/100))

D

M = (1 + R) / (100R)


(a) is the correct answer.

Ques 44 GATE 2009

If the percent moisture regain (R) of a fibre is 8, its percent moisture content (M) would be approximately

A

7.4

B

7.2

C

7.6

D

7.0


(a) is the correct answer.

Ques 45 GATE 2009

The maximum practical limit of spindle speed in a commercial cotton ring frame is around

A

5000 rpm

B

10000 rpm

C

20000 rpm

D

30000 rpm


(c) is the correct answer.

Ques 46 GATE 2009

Ring spun cotton yarns of 30, 40, 50 and 60 tex are made from the same fibre. All these yarns are spun with a constant twist per cm of 10. The yarns can be arranged in descending order of helix angle of surface fibres as

A

30, 60, 50, 40

B

40, 60, 50, 30

C

30, 40, 50, 60

D

60, 50, 40, 30


(c) is the correct answer.

Ques 47 GATE 2009

Hairiness of ring spun yarn increases, when

A

Traveller weight increases

B

Front zone draft at ring frame increases

C

Spindle speed decreases

D

Ring rail speed increases


(b) is the correct answer.

Ques 48 GATE 2009

Surface speed of cone in relation to surface speed of winding drum is

A

Equal at all points

B

Higher at all points

C

Lower at all points

D

Higher at some points and lower at other points


(d) is the correct answer.

Ques 49 GATE 2009

With increasing twist, spun yarn strength

A

Increases continuously

B

Decreases continuously

C

Decreases initially and then increases

D

Increases initially and then decreases


(d) is the correct answer.

Ques 50 GATE 2009

Consider the following elements in Group I and Group II and choose the correct alternative from amongst A, B, C and D. <

Group I Group II
P. Licker-in 2. Fibre rupture, coarse wires
Q. Cylinder 1. High speed, fine wires
R. Flats 5. Nep removal, slowest speed
S. Doffer 3. Wires with acute front angle, condensing of fibre

A

P-5, Q-3, R-2, S-1

B

P-1, Q-2, R-5, S-4

C

P-4, Q-4, R-3, S-5

D

P-2, Q-1, R-5, S-3


(d) is the correct answer.

Ques 51 GATE 2009

Pressure field from the nip of drafting roller can be extended by

A

Reducing roller pressure and increasing hardness of top roller

B

Reducing mass of fibre strands and reducing roller diameter

C

Increasing roller diameter and increasing roller pressure

D

Increasing width of fibre strand and increasing hardness of top roller


(c) is the correct answer.

Ques 52 GATE 2009

The packing coefficient of a yarn with 100 fibres is increased by 10%, the percentage change in yarn diameter will be approximately

A

-16.9

B

-10.9

C

-4.9

D

4.9


(d) is the correct answer.

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