Previous Exams

Technical Assistant (KHADI) - 2016

 

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0. Dugdales terry motion working on the principle of
Insertion of wire picks

Loose reed principle

Fast reed principle

By acting take up motion
1. In weft knitting loop length controlled by
Clearing cam

Guard cam

Stitch cam

Raising cam
2. A non-ionic dye which is relatively insoluble in water at room temperature
Disperse dye

Vat dye

Sulphur dye

Reaction dye
3. Mercerisation of the linen help to minimize the
Decrease in resistance to abrasion

Increase in resistance to abrasion

Decrease in resistance to crease

Increase in resistance to crease
4. The type of polymerization used for the production of polyacrylontirile is
Poly condensation

Addition polymerization

Radical addition polymerization

Radical condensation polymerization
5. For a 1/3 twill weave,which will take least heald shaft movement
Centre closed shed

Bottom closed shed

Semi open shed

Open shed
6. Flex,jute and ramie fibres are belongs to the family of
Leaf fibre

Fruit fibre

Hair fibre

Bast fibre
7. In an air jet weaving machine,propelling force generating for insertion of weft yarn is not depend on the
Strength of yarn

Length of yarn

Diameter of yarn

Velocity of yarn
8. In finishing process combination of nitrogen and phosphorus compounds used for
Water proofing

Anti microbial agent

Flame retardant

Antistatic agent
9. Thinnest yarn fault in classimat among the following is
’D-4’

B

’H-1’

1-2
10. Pressure bar provided in a draw frame drafting for
Reduce the pressure on the fibre assembly within drafting zone

Reducing the drafting wave

Increasing the uniformity of silver

Increasing the pressure on the fibre assembly within the drafting zone
11. Most of the seed coat particles are removed effectively in
Carding

Blow room

Comber

Spinning
12. Which of the following yarn is finest?
10 Ne

10 Tex

100 Ne

100 Tex
13. The fibre which has a mineral origin
Asbestos

Silk

Flex

Acrylic
14. The difference between the cost price and selling price
MRP

Mark up

Market price

Profit
15. The operation of twisting of long silk filament yarn called
Degumming

Weighting of silk

Throwing of silk

Winding of silk
16. Stifling of silk is the process of
Cocoons placed in 1% soap solution at 900 C

Grading of cocoons for good quality

Unwinding long continuous yarn from the cocoons

Killing moth inside the cocoons by a steam or hot water
17. Design used for denim fibre
3/1 twill

1/2 twill

2/2 twill

1/3 twill
18. A silk fabric constructed with a weft sateen figure on a warp satin or twill or plain ground called
Brocade

Georgette

Muslin

Damask
19. Which is not a function of geo textile?
Separation

Filtration

Drainage

Protection
20. The fibres not used for the production of military protective clothing
Aramids

Kevlar

Carbon fibres

Polyurethane
21. The most suitable weave for ballistic protective clothing is
Plain weave

Satin weave

Twill weave

Basket weave
22. What are the primary colours in pigment theory?
Red,Green Blue

Yellow,Green,Blue

Blue,Yellow,Red

Red,Yellow,Blue
23. The weave that produce longitudinal warp line in the cloth with fine sunken lines in between is called
Repp weave

Pique

Bedford cord

Twill weave
24. Function of positive feed in knitting is
Yarn tension compensating device

To alter the stitch length

Regulate the amount of yarn feed

Minimizing the yarn waste
25. If the needle is not raised and does not receive the new feed yarn,a loop form called
Knit loop

Tuck loop

Held loop

Miss loop
26. In a carding machine wire points arranged in opposite direction and move same direction with different speed;the action called
Carding

Stripping

Dofting

Drafting
27. State the function of presser
To close the beard

To close the latch

To give return movement to the needle

To assist the guard cam
28. Define sinker loop
A loop in which the same thread crosses over itself

Length of yarn placed over the needle

The yarn connect two adjacent needle loop

The upper part of the loop produced by the needle
29. Amount of water used for the insertion of weft in water jet loom
5-9 cc/pick

1-4 cc/pick

0.1-0.4 cc/pick

0.5/0.9 cc/pick
30. State the function of swing door mechanism
Regulate the feed cotton

Regulate the speed of beater

Pre-opening of cotton

Blending of fibres
31. The function of weft brake in projectile weaving machine is
To stop the projectile

Holding weft supply package

For guiding yarn on weft accumulator drum

Applies tension to weft yarn at appropriate time
32. A defect caused by hardened fluff or foreign matter into the fabric is called
Goat

Ditry cloth

Patchiness

Reediness
33. A loom truly termed ‘automatic’ must have the following mechanisms in addition to the essential mechanism
Weft stop motion,warp stop motion and weft replenishment motion

Well stop motion,weft replenishment motion and positive warp let-off motion

Weft replenishment motion,positive take-up motion

Positive warp let-off motion,warp stop motion and weft replenishment motion
34. The cause for nep formation in blow room
Too high or low beater speed

High variation of trash in different cotton varieties in mixing

Uneven feeding of material to the feeder

Inadequate or high calendar roller pressure
35. Place many number of plies of fabric one over other and aligned length and width of fabric together is called
Pattern matching

Cloth alignment

Pattern loading

Spreading
36. Function of feed dog in sewing machine
Control the length of stitch

Hold the cloth firmly in stitching position

Help to move the cloth forward while sewing

Hold the thread in position from spool
38. Two or more shuttle boxes fitted with both end of loom called
Multiple box looms

Pick at will looms

Non skip box looms

Circular box looms
39. Find the calculated production of plain loom running with 160 RPM,40 pick/inches with an efficiency of 75%
3 inches/minute

3 inches/hour

4 inches/minute

5 inches/minute
40. Warp yarns of one shed line do not cross all the yarns of other shed line at the same time.This is called
Staggering of healds

Balancing of healds

Warp easing of healds

Balancing of shed
41. A centre weft fork motion
Check presence of weft in alternate picks

Check presence of weft in every picks

Used for the production of heavy duty fabric

Stops the loom when a end breaks
42. The function of check strap is
To control the picking force

Decrease the momentum of picker

Destroying the momentum of shuttle entered in shuttle box

To protect the buffer and the picker inside the shuttle box
43. In dwell of tappet period means
Loom will remain stationary

Health with remain stationary

Healds are level and beat up starts

Healds are begin to move for shed
44. Temperature of the size in a sow box for cotton sizing
85+-5C

98 5C

92 2C

100 2C
45. Primary ingredients in sizing are
Adhesives,softeners,antistatic agents

Lubricants,antistatic agents

Delinquescent,softeners,lubricants

Adhesives,softeners,antiseptic agents
46. In apirn winding machine function of layer locking device is
Control diameter of pirn

Give proper tension

Improve prin stability

Locking the bunch of yarn
47. The main advantage of splicing is
More strength in joints

Uniform diameter of yarn

Easy to handle

Higher production in winding
48. In a drum winding machine
Package RPM is decreases empty to full

Coils per traverse is constant

Produce close winding package

Package RPM constant empty to full
49. In winding two and a half turn fully accelerated drum means
Drum grove make 2.5 turn around the drum from one end to the other

Drum lays more yarn on the base than nose

The base of cone increases as package size increases

All the above
50. When succeeding coils are widely spaced on the package,it is known as
Close winding

Open winding

Cheese winding

Automatic winding
51. In a right hand dobby first pick is controlled by
Straight feeler and top hook

Bend feeler and top hook

Straight feeler bottom hook

Bend feeler and bottom hook
52. Normal clearance in a parallel blade slub catcher for carded counts
1 to 1.5 time of yarn diameter

1.5 to 2 times of yarn diameter

2 to 2.5 times of yarn diameter

2.5 to 3 times of yarn diameter
53. Advantage of swinging blade type slub catcher over fixed blade
Clearing 50% more fault

Cheap and easy to maintain

More sensitive to thin places

Slubs can get squeezed and passed through
54. Advantage of early shedding is
Less power consumption

Heavy wefting

Less strain in warp

Useful for light weight fabric production
55. Which one is incidental waste in weaving
Knotting waste

Process waste

Waste from package fault

Waste during changing pirm
56. Narrow,bare and dense stripes running along the warp direction of fabric is called
Warp streaks

Weft bar

Missing end

Float
57. The depth of reed wire along the direction of warp yarn is known as
Air space

Percentage air space

Wire thickness

Gauge number of reed wire
58. Refractometer used for
Measuring stretch in sizing

Determine size pick up

To indicate consistency of solid contents in size past

To measure saw box temperature
59. The length and weight unit of Denier English count system
Hank of 840 yards and 1 denier

Hank of 560 yards and 1 denier

Hank of 520 yards and 1 denier

Hank of 560 yards and 1 grains
60. Count defined in Denier metric system as the
Number of 9000-meter length units present in one gram

Number of one-gram weight units of yarn present in 9000 meters

Number of 1000 meters length units present in one gram

Number of one-gram weight units of yarn present in 1000 meters
61. Heald count in a plain set is
Number of heald eyes per 2 inches across the width

Number of heald eyes per inches across the width

Number of heald eyes per one inch width

Total number of heald eyes present in the heald divided by heald width
62. Reed count is the number of dents in two inches in
Radcliff system

Metric system

Brad ford system

Stokport system
63. Tachometer used for measuring
Moisture regain

RPM and surface speed

Percentage of elongation

Humidity
64. If 200 yards of cotton yarn weigh 2 grams.What is the count in Ne?
100s

24s

45s

54s
65. The calculated count determined from the total length and total weight of different count termed as
Resultant count

Average count

Universal count(tex)

Worsted count
66. Find the resultant count of 8s,24s and 12s
8s

15s

4s

20s
67. If 30 Km of cotton yarn is 2.5kg,what is the count in French cotton system?
6sNf

12sNf

24sNf

8sNf
68. Find the range of the following test results Strength in lbs-113,108,124,128,110
20 lbs

4 lbs

15 lbs

5 lbs
69. The whole material available for testing is called
Sample

Population

Specimen

Median
70. The ability of a fabric to assume a graceful appearance in use is
Stiffness

Drape

Resilence

Cover
71. Fraction of the area of the fabric covered by both warp and weft threads called
Cover factor

Cloth factor

Cloth setting

Cloth cover
72. Cover factor calculated from
Threads per inch in the cloth

Ends and picks per inch in the fabric

Threads per inch and count of yarn

End per inch in the fabric
73. Uster evenness tester working on
Optical principle

Electronic principle

Capacitance principle

Electromagnetic principle
74. Circumference of wrap reel is
1.5 yards

3 yards

1.2 yards

2.4 yards
75. Single thread strength tester of the pendulum type lever working on the principle of
Constant rate of loading

Constant rate of extension

Constant rate of breaking

Inclined plain
79. One lea of 20s cotton yarn consists of
120 Hanks

120 yards

120 inches

120 feets
80. Instrument not used for the measurement of bundle strength is
Stelometer

Inston tester

Pressley tester

Arelometer
81. Micronaire value is a combination of
Maturity and fibre strength

Fibre length and fineness

Fineness and maturity

Fineness and fibre strength
82. Which is a burning characteristic of pure silk?
In flame it melt instantly

Burn,melt slowly when present to the flame

Smells like burning paper

Continuous to burn and melt when away from flame
83. What is the corrected count of yarn?
Count of yarn corrected in standard regain

Count of yarn in actual regain

Count of yarn after changing draft wheel

Count of yarn corrected in standard moisture
84. A yarn made with irregular profile or construction that differs from single or folded yarn called
Texturised yarn

Fancy yarn

Untwisted yarn

Worsted yarn
85. Wool fibre made with a naturally occurring protein
Keratin

Lignin

Sericin

Fibroin
86. A small tangled knot of fibre often caused by fibre processing is
Knot

Objectionable fault

Entanglement

Nep
87. Average length of Gossypium hirsutum is
32-40 mm

13-25 mm

25-48 mm

22-24 mm
88. The distance between the nip line in relation to the distribution of fibre length within the silver called
Machine setting

Roller setting

Relative roller speed

Draft setting
89. Main contributors to thick and thin places in yarns are
Un opened fibre and drafting irregularities

Defective winding process

Presences of large amount of waste percentage in mixing

Poor control of lap weight
90. The most important single cause for within bobbin count variation
Incorrect draft and ratchet wheel in fly frame

Poor control of lap weight

Defective draw frame

Bad work practice in ring frame
91. Prime cause for excessive stretch in fly frame
Worn out drafting rollers

Incorrect initial position of cone drum belt

Faulty feeding of silver

Incorrect piecing practice
92. Percentage of yarn produced from a given weight of bale cotton
Productivity

Cotton realization

yam realization

Production efficiency
93. Common yarn objectionable faults in the fabric are
Slubs and knots

Neps and Hooks

Thin places and neps

Thick places and neps
94. Cause for a catastrophic end breaks in spinning
Collision between balloons

Torn apron

Vibrating or out centre spindle

Eccentric drafting rollers
95. A periodic check on fractionating efficiency serve
To increase the production in comber

To improve the fibre alignment in comber

Judge the mechanical condition of comber

To reduce the stoppage in combing
96. A convenient and reliable method for estimating the loss of efficiency and its causes called
Productivity analysis

Snap reading

Machinery audit

Proftiability analysis
97. The ratio of machine production to the labour employment ratio expressed as percentage is
Machine productivity

Labour productivity

Productivity

Productivity index
98. A periodic critical examination of machine to identify mechanical condition of various parts and machine setting,which are likely to affect quality and productivity is called
Periodic maintenance

Preventive maintenance

Quality audit

Machinery audit
99. Transfer efficiency of fibres in a carding cylinder decided by
RPM of cylinder

Wire population in doffer

Tooth angle in cylinder

RPM of doffer
100. The function of front plate is
To regulate the cleaning efficiency of earding machine

To regulate the percentage of flat waste

To control the droppings

To regulate the flat speed