FABRIC MANUIFACTURE - I

(MCQ : MODULE 3 - Winding 2 )

Question 1: In step precision winding (Digicone winding)

Traverse speed is constant
Traverse speed increases with time
Traverse speed reduces continuously with time
Traverse speed reduces and then increases in steps.

Question 2: The doffing period in minutes of a 1.5 kg package being wound at a winding speed of 1000 m/min with 90% efficiency from 12 tex yarn would be

131.7
138.8
143.2
147.5

Question 3: Angle of wind in a cross wound package is in the range of

5⁰-20⁰
15⁰-20⁰
30⁰-50⁰
70⁰-90⁰

Question 4: In winding optimum tension for 30 tex cotton yarn will be approximately

5 g
10 g
30 g
60 g

Question 5: The change in twist of yarn during over end unwinding is

More in case of smaller diameter package
More in case of larger diameter package
Not dependent on package diameter
None of the above

Question 6: A precision winder has to wind 4 kg of yarn of 40 tex. If the machine winds at 800 m/min, without any interruption, the time (min) taken for winding would be

125
100
25
12.5

Question 7: If the efficiency of the above machine is 91%, additional time(min) required to do the same job is approximately

10
12
15
25

Question 8: The following data refers to a cone winding process:

Package diameter=20 cm

Package height=25 cm

Drum diameter=8 cm

Scroll of the drum=2.5

Winding speed=1000 m/min

i: The number of coils on the surface of the package is

0.5
1.0
1.5
2.0

ii: The rpm of the drum is approximately

3000
3400
3700
4000

Question 10: In a winding operation if E is clearing efficiency, K is knot factor and n is number of objectionable faults present in the yarn, then total number of clearer breaks occurring on the machine would be

EKn
EK/n
En/K
En²K

Question 11: Rank the four splicers in ascending order and justify your answer

Splicer	RSS (%)	Splice breaking ratio	Clearing efficiency (%)	Knot factor
A	90	50	92	1.1
B	85	55	90	1.2
C	90	45	92	1.0
D	85	60	88	1.2

C-D-B-A
C-A-B-D
A-D-B-C
A-C-B-D

 

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