Textile Engineering Gate 2013 Questions with Answer

Ques 53 GATE 2013


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


(d) is the correct answer.

Ques 54 GATE 2013


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


(a) is the correct answer.

Ques 55 GATE 2013


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


(c) is the correct answer.

Ques 56 GATE 2013


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


(b) is the correct answer.

Ques 57 GATE 2013


The advantage of flyer leading over bobbin leading speed-frame is

A

Lower roving stretch

B

Lesser chance of unwinding after breakage

C

Lower power requirement

D

Power requirement remains fairly constant during the bobbin build up


(d) is the correct answer.

Ques 58 GATE 2013


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


(b) is the correct answer.

Ques 59 GATE 2013


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


(d) is the correct answer.

Ques 60 GATE 2013


A winding machine without anti-patterning device has the following particulars:
Cylindrical winding drum diameter: 75 mm
Number of crossing on drum: 2
Rotational speed of the drum: 2860 rev/min
Traverse length: 150 mm
A 3.5 degree constant taper cone is built on the above cone winder with no movement of the point of drive during the package build up. At mean cone diameter of 150 mm the package rev/min is 1375.
The number of times major patterning will occur in producing 200 mm mean diameter package on 40 mm mean diameter core is

A

5

B

7

C

9

D

11


(d) is the correct answer.

Ques 61 GATE 2013


A winding machine without anti-patterning device has the following particulars:
Cylindrical winding drum diameter: 75 mm
Number of crossing on drum: 2
Rotational speed of the drum: 2860 rev/min
Traverse length: 150 mm
A 3.5 degree constant taper cone is built on the above cone winder with no movement of the point of drive during the package build up. At mean cone diameter of 150 mm the package rev/min is 1375.
Distance in mm of point of drive from the base of the cone along the traverse is approximately

A

26

B

30

C

36

D

40


(a) is the correct answer.

Ques 62 GATE 2013


Consider the following particulars for a spinning line producing 30 tex yarn from 150 militex polyester fibre.
Mass CV of card sliver: 3%
Mass CV added at draw-frame: 2%
Mass CV added at speed-frame: 3%
Mass CV added at ring-frame: 7%
Number of doubling at draw-frame: 6
Number of draw-frame passage: 1
The mass CV% of roving is approximately

A

3.4

B

3.8

C

4.2

D

4.6


(c) is the correct answer.

Ques 63 GATE 2013


Consider the following particulars for a spinning line producing 30 tex yarn from 150 militex polyester fibre.
Mass CV of card sliver: 3%
Mass CV added at draw-frame: 2%
Mass CV added at speed-frame: 3%
Mass CV added at ring-frame: 7%
Number of doubling at draw-frame: 6
Number of draw-frame passage: 1
Index of irregularity of yarn is approximately

A

0.88

B

1.13

C

1.33

D

1.53


(c) is the correct answer.

Ques 64 GATE 2013


The angle subtended by the half-lap on the cylinder comb is 90°. The time taken by the half-lap to comb a fringe is 0.04 s. The speed of the comber in nips/min is

A

325

B

350

C

375

D

400


(c) is the correct answer.

Ques 65 GATE 2013


From the following data, calculate approximate production rate in kg/hr.
Length of lap fed per nip: 6 mm
Lap linear density: 60 ktex
Noil: 20%
Efficiency: 80%
Number of heads: 6

A

21

B

26

C

31

D

36


(b) is the correct answer.

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