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
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
Blow room
12. Which of the following yarn is finest?
10 Ne
10 Tex
100 Ne
100 Tex
13. The fibre which has a mineral origin
14. The difference between the cost price and selling price
Mark up
Market price
15. The operation of twisting of long silk filament yarn called
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
19. Which is not a function of geo textile?
20. The fibres not used for the production of military protective clothing
Carbon fibres
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
23. The weave that produce longitudinal warp line in the cloth with fine sunken lines in between is called
Repp weave
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
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
Ditry cloth
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
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
98 5C
92 2C
100 2C
45. Primary ingredients in sizing are
Adhesives,softeners,antistatic agents
Lubricants,antistatic agents
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
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
64. If 200 yards of cotton yarn weigh 2 grams.What is the count in Ne?
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
67. If 30 Km of cotton yarn is 2.5kg,what is the count in French cotton system?
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
70. The ability of a fabric to assume a graceful appearance in use is
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
Inston tester
Pressley tester
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
86. A small tangled knot of fibre often caused by fibre processing is
Objectionable fault
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
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 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