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WorksheetsYFS ISE-II
Total questions: 15
Worksheet time: 8mins
Schwarz constant for ideal yarn is
equal to 1
less than 1
more than 1
more than 2
Keeping all constructional parameters constant, use of finer yarn in weft direction of the fabric, air permeability
Increases
Decreases
No change
No relation
Which of the following is one of the fundamental structural features of yarn
volumetric density
linear density
specific volume
specific gravity
The fibres can slip if their freedom of movement is not hindered by
High frictional forces
Twist
Presence of sizing agents
All above
The fancy yarn mainly possesses
decorative features
comfort features
warmth retaining features
covering power
The limting value of twist angle in case of ideal yarn for making yarn stable in tension is
70.5°
90°
0°
40°
Which of the below fabric will have more luster?
Plain Weave
Twill Weave
Broken Twill Weave
Sateen
Wear is the net result of number of ‘agencies’ which
Reduce the serviceability of an article.
Improves the serviceability of an article.
Improves abrasion Resistance.
Improves Pilling
Fibre requirements for high abrasion resistance are-
Low modulus of elasticity.
High ratio of primary to secondary creep.
High rate of primary creep.
All above
Frictional wear occurs when-
Smooth surfaces are rubbed together
Where surface projections of the abrading surface are small relative to the diameter of the fiber
Where the surface protuberances of the abradant are large compared to fiber diameter
None of the above
F A S T stands for
Fabric Assurance by Simple Test
Fabric Assurance by Shear Test
Fabric Assurance by Soil Test
Fabric Assurance by Strength Test
KAWABATA tests are also referred as –
Low Stress Mechanical Properties
High stress Mechanical Properties
Thermal Comfort Properties
Dimensional Properties
Which property of the fabric cannot be evaluated by FAST?
Compression
Bending
Extension
Surface Roughness
Compressional properties of the fabric are measured by –
FAST-1
FAST-2
FAST-3
FAST-4
The mechanism of break in high twist yarn is
catastrophic failure
continuous failure
stepwise failure
fibre slippage
