SSM COLLEGE OF ENGINEERING

DEPARTMENT OF TEXTILE TECHNOLOGY

S.NO NAME OF THE QUESTION ANSWER
Gauge of a knitting machine is
a) Number of needles / inch on the
machine
b) Distance between two neighboring
1
needles on the machine
c) Total number of needles on the
machine

A cross lapped web has majority of the fibers

oriented along
a) The length of the web
2 b) The width of the web
c) A direction intermediate between the
length and width of web

The production rate will be maximum in the

case of manufacture of
a) Woven fabric
3 b) warp knitted fabric
c) Needle punched fabric
d) Thermo bonded fabric

Match the following

a) Non woven fabric - (1) Curtains

and laces
4 b) Weft knitted fabric - (2) Filtering
material
c) Warp knitted fabric - (3) Leisure wear

5 Match the following

a) Needle punching - (1) Fully
fashioned
b) Circular knitting - (2) Fusing of
filaments
 c) Flat knitting - (3) Depth of
penetration
d) Spun bonding - (4) Dial and
cylinder

Introduction of tuck stitch into a single jersey

construction makes the filament
a) Lighter, thinner and wider
6 b) Lighter, thicker and narrower
c) Heavier , thicker and wider
d) Heavier, thicker and narrower

Loop length of a knitted fabric is changed by

adjusting
a) Up throw cam
7 b) Clearing cam
c) Guard cam
d) Stitch cam

Plain weft knitted fabric will have more stretch

along
a) Length
8 b) Width
c) Bias direction
d) Same stretch in all directions

Anisotropy is maximum in
a) Parallel laid web
b) Cross laid web
9
c) Composite laid web
d) Air laid web

10 Match the following

a) Needle punching - (1) barbed needle
b) Spun lacing - (2) Air jet
c) Stitch bonding - (3) Extruder
d) Spun bonding - (4) Water jet
- (5) Stripper
- (6) Compound
 needle

The highest width wise extensibility in a weft

knit fabric would result form
a) Plain single jersey
b) 1x1 Rib
11
c) Purl
d) Interlock

The width of a needle punched fabric is set by

adjusting
a) Type of needles
b) Punching density
12
c) Traverse at the cross lapper
d) Strokes / min of the punching
machine

With rise in the punching density

a) p- The tenacity of needle punched
fabric rises steadily
b) Q- The effect of rise it tenacity as
function of punching density is less
pronounced for fibers of shorter
length
c) R- The breaking extension of the
punched fabric keeps on rising
13 steadily
d) S- The change in tenacity and
breaking extension shows similar
pattern in both machine and cross
directions for a cross laid web
a) P,Q
b) Q,R
c) R.S
d) P,S

14 The type of fiber preferred for hydro

entanglement (spun lacing)
a) Hydrophilic, fine and oval in cross
 section
b) Hydrophilic, long and round in cross
section
c) Hydrophobic, long and round in cross
section
d) Hydrophobic, fine, long and round in
cross section

As compared to a1x1rib fabric, a 2x2 rib fabric

would be
a) Thicker and narrower
15 b) Thicker and heaver
c) Heaver and wider
d) Thicker and wider

The range of fiber length for web formation by

aerodynamic method is
a) Less than10mm
b) 10 to 50 mm
16
c) 50 to 100 mm
d) Above 100 mm

Consider the following statements in the

context of a plain weft knitted structure and
choose the IN CORRECT statements
a) Wet laid 1) coarse fiber
b) Spun lace 2) Hollow fiber
c) Spun bonded 3) short fiber
17 d) Needle punched 4)Thermoplastic
fiber
5) Very flexible
fiber
6) Natural fiber

18 Fibers with a rectangular cross section are

preferred over those with triobal section for
mechanically entangled nonwoven fabrics,
because rectangular cross section .
 a) Provides high packing density of the
web
b) Offers high strength to the web
c) Gives better hand value to the fabric
d) Entangles more easily than triobal
fiber

. In the context of thermal bonding of non

woven web, the statement which is not true is
a) A thermoplastic component has to be
present in the web
b) Heat is applied until the thermo
19 plastic component melts
c) The polymer flow by surface tension
and capillary action to fiber cross
over points
d) Chemical reaction takes place

In weft knitted fabric of the same mass per unit

area produced form the same yarns, the
structure which will give the highest thickness
a) Plain
20 b) Rib
c) Purl
d) Interlock

The nonwoven process which has the highest

production rate is
a) Needle punching
21 b) Hydro entangling
c) Melt blowing
d) Spun bonding

22 A needle punched nonwoven fabric has 2mm

thickness and 400g/m2 areal density if the
fabric density is 0.9g/m3 ,the volume porosity
(%) of the fabric , accurate to the nearest
integer_______________
 . Higher value of stitch cam setting in a weft
knitting m/c would
a) Increase loop length and decrease the
fabric areal density
b) Increase loop length and increase the
fabric areal density
23
c) Decrease the loop length and decrease
the fabric areal density
d) Decrease the loop length and increase
the fabric areal density

Increase in taper angle on sectional warping

drwill normally require
a) Higher warping speed
24 b) Lower warping speed
c) Increase in traverse speed
d) Decrease in traverse speed

Increase in the ratio of the length of crank to

the length of connecting rod leads to
a) Increase in sley eccentricity
b) Decrease in sley eccentricity
25
c) No change in sley eccentricity
d) Initial increase and then decrease in
sley eccentricity

Shuttle remains on the race board during its fly

in the shed because of
a) Forward positive acceleration of the
sley
26 b) Backward positive acceleration of the
sley
c) Constant forward velocity
d) Constant backward velocity

27 A square plain jammed woven fabric of 0.5mm

thickness is to be produced from yarns.
Assuming circular yarn cross section the no of
 picks per cm in the fabric on the loom is
approximately.
a) 13
b) 18
c) 23
d) 28

On a winding m/c, if the winding speed

increased from 1000 m/min to1200 m/min, the
percentage increase in the yarn tension will be
approximately
28
a) 12
b) 24
c) 36
d) 44
Pirn winding is an essential preparatory process
for weaving on
a) Air jet loom
b) Water jet loom
29
c) Rapier loom
d) Drop box loom

Double acting dobby is driven from

a) Bottom shaft
b) Crankshaft
30
c) Tappet shaft
d) Rocking shaft

If the diameter of a torsion rod used in

projectile loom is double than the torque
required to twist it would increase by
a) 2 times
b) 4 times
31
c) 8 times
d) 16 times
 In a sizing process if add- on is 12.8% and
paste concentration is 16% , the value of wet
pick up (%) would be
a) 13
32
b) 50
c) 80
d) 200

A shuttle loom producing 3 up 1 down twill

fabric is running at 180 picks per minute. The
angular Velocity of tappet (cam) shaft in radian
33 per seconds, accurate to 2 decimal places,
would be ______.

A yarn is passing over a multiplicative

tensioner with an angle of wrap of 90. If the
input yarn tension is 100 cN and coefficient of
friction between yarn and tensioner is 0.2, then
34
the output yarn tension in ‘N’, accurate to 2
decimal place, would be___________.

During beat-up , possibility of bumping

increases if
a) Warp tension is low and cloth fell
displacement is low
b) Warp tension is low and cloth fell
displacement is high
35
c) Warp tension is high and cloth fell
displacement is low
d) Warp tension is high and cloth fell
displacement is high

36 SI unit for tearing strength is _________

Co3 cotton count is equivalent to _________
37 denier.
 Fineness of merino wool range between
38
________ µm.
39 Moisture regain of silk at 65% rh is ________%.
Instron tensile tester work on _________.
40
Number of 3 denier fibres in a 10s cotton count
41 yarn will be ________.

Thickness of woven fabrics is generally

42 measured using ______ method.

Bending stiffness of yarn can be measured

43 using _____ method.

Flow rate through 10 layers of a fabric is

5cm3/sec/cm2/cm of water head. Air
permeability of the fabric is
44
approximately _________ cm /sec/cm2
3

per cm of water head.

One of the important mechanical property of

fabric affecting the fabric handle is
45
________.