FABRIC MANUIFACTURE - I

(MCQ : MODULE 10 - Primary motions : beatup)

Question 1: The deviation of sley displacement from SHM depends on

The loom eccentricity
The length of connecting rod
Radius of the crank
Sley eccentricity

Question 2: If a sley follows SHM, the eccentricity value is

1
0
Infinity
1/2

Question 3: Sley velocity in m/sec at the front centre of a loom running at 300 rpm is

0
5
15
45

Question 4: If the sley eccentricity is 0.5 then the ratio of sley accelerations in the front centre and back centre of loom is

2
3
4
5

Question 5: As sley eccentricity increases

Maximum sley velocity is reached latter during backward movement.
Beat up becomes less effective.
Sley remains longer near the front centre of the loom
Shuttle gets less time to travel through the shed.

Question 6: On a shuttle loom, the sley acceleration during the shuttle flight on the race board is

Towards the front of the loom
Towards the back of the loom
First towards the front and then towards the back
First towards the back and then towards the front

Question 7: Force acting on the sley depends on

Equivalent mass of sley, loom speed and pick spacing
Equivalent mass of sley, loom speed and cloth fell displacement
Equivalent mass of sley, pick spacing and cloth fell displacement
Equivalent mass of sley, loom speed and sley eccentricity

Question 8: While weaving a cloth in an automatic shuttle loom bumping can be avoided by

Increasing the warp tension
Decreasing the warp tension
Increase the picks per unit length
Change the shedding timing

Question 9: While weaving a cloth, bumping increases

As PPI decreases and cloth fell is displaced more
As PPI increases and cloth fell is displaced more
As PPI increases and cloth fell is displaced less
As PPI decreases and cloth fell is displaced less

Question 10: Tick the wrong statements

Bumping is more likely to occur for heavy fabrics
Minimum warp tension should be enough to prevent bumping
Beat up force is dependent on the warp tension
Bumping reduces the effectiveness of beat up.

 

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