SY_Lab ESE_Testing of Fibers and Yarn (AY 2022-23)

The method used for twist testing in the experiment is

• Twist untwist method
• Direct counting method
• Microscopic method
• Geometric method

Which among the following statement is correct

• Increase in yarn twist increases yarn strength
• Increase in yarn twist decreases yarn strength
• Increase in yarn twist results in first increase in yarn strength and then decrease in yarn strength
• Yarn twist does not influence yarn strength

This length is used for roller setting in the drafting zone

• Effective length
• Span length
• Mean length
• Modal length

A flatter middle zone of Bear sorter diagram implies

• More dispersion in fibre length
• Less dispersion in Fibre length
• Higher mean length
• Lower mean length

Which amongst the following statement are correct?

• sample with higher variability will require more readings
• sample with higher variability will require less readings
• sample with higher value of mean needs more readings
• sample with lower value of mean needs more readings

Identify the limitation of oiled plate method.

• It is a tedious process
• It is time consuming
• It requires a large number of readings to estimate the length parameters
• All of the above

The cumulative frequency curve establish the background for this instrument

• Fibrograph
• Vibroscope
• Presley
• Shirley

The fibre ribbon width can be determined from this section

• longitudinal
• cross -section
• axial
• diagonal

What was the tool used to make the cross -section of fibre?

• Microtome
• Microtip
• Microblade
• Microcut

Identify the fibre from the cross -section.

• cotton
• wool
• viscose
• acylic