Lecturer in Textile Technology(NCA) Question Paper and Answer Key

Question Paper Code: 39/2019/OL
Category Code: 430/2017
Exam: Lecturer in Textile Technology(NCA)
Medium of Question: English
Date of Test 27-08-2019
Department Technical Education
Alphacode A


  1. The power consumed by an ac series circuit is maximum when its power factor is
    A:-0
    B:-1
    C:-0.5
    D:-0.8

    Correct Answer:- Option-B
    .
  2. The protective measure to avoid electric shock while touching electrical appliances is
    A:-Switch
    B:-Fuse
    C:-Lightning arrester
    D:-Earthing

    Correct Answer:- Option-D
    .
  3. What is the unit of apparent power?
    A:-Watt-hour
    B:-Watt-sec
    C:-VA
    D:-Watts

    Correct Answer:- Option-C
    .
  4. In an R-C series circuit, the voltage across each element is 50V. The applied voltage is -----
    A:-100V
    B:-70.71v
    C:-57.23V
    D:-50V

    Correct Answer:- Option-B
    .
  5. What is the effective resistance of a parallel combination of 2Ω, 3Ω and 6Ω
    A:-1 Ω
    B:-11 Ω
    C:-2 Ω
    D:-3 Ω

    Correct Answer:- Option-A
    .
  6. Choose the correct statement
    A:-The CFL bulb is an incandescent one.
    B:-LED bulbs are more efficient than CFL bulbs in terms of power and life.
    C:-LED bulbs are cheaper than CFL bulbs
    D:-CFL bulbs remain cool, when operated

    Correct Answer:- Option-B
    .
  7. Which of the following is not a constituent of an electro mechanical relay?
    A:-Spring
    B:-Pivot
    C:-Armature
    D:-Transformer

    Correct Answer:- Option-D
    .
  8. The 8051 micro controller has a data memory of
    A:-128 byte RAM
    B:-128 byte ROM
    C:-128 kilobyte RAM
    D:-128 kilobyte ROM

    Correct Answer:- Option-A
    .
  9. The modulation used in GSM is
    A:-Gaussian Minimum Shift Keying (GMSK)
    B:-Amplitude Shift Keying (ASK)
    C:-Binary Phase Shift Keying (BPSK)
    D:-Quaternary Phase Shift Keying (QPSK)

    Correct Answer:- Option-A
    .
  10. Which of the following e waste component poses a health hazard?
    A:-Lead
    B:-Mercury
    C:-Cadmium
    D:-All of the above

    Correct Answer:- Option-D
    .
  11. In internal combustion engine, the total energy losses due to pumping and friction converted into power is termed as
    A:-Brake power
    B:-Indicated power
    C:-Friction power
    D:-Total engine power

    Correct Answer:- Option-C
    .
  12. Which among the following statement is correct?
    A:-In four-stroke engines, the cooling and lubrication requirement is lesser than in two-stroke engines.
    B:-A lighter flywheel is needed for four-stroke engines than two-stroke engines.
    C:-In two-stroke engines, volumetric efficiency is more due to greater time of induction.
    D:-In four-stroke engines, in each revolution of the crankshaft, four power strokes are obtained.

    Correct Answer:- Option-A
    .
  13. The basic function of clutch is to
    A:-support a moving element and to confine its motion
    B:-transmit power from one shaft to other over considerable distances
    C:-measure forces and energy
    D:-control flow of mechanical power within a machine

    Correct Answer:- Option-D
    .
  14. In a thermal (steam) power plant, the feed water is preheated in --------
    A:-Air preheater
    B:-Economiser
    C:-Condenser
    D:-Boiler

    Correct Answer:- Option-B
    .
  15. In a hydroelectric power plant, the level of water stored in reservoir is known as ------
    A:-Hydraulic head
    B:-Tail water level
    C:-Headrace
    D:-Spillway level

    Correct Answer:- Option-C
    .
  16. A matrix A is said to be singular if
    A:-lAl`!=0`
    B:-lAl =0
    C:-`A^(T) =A`
    D:-`A^(-1)=A`

    Correct Answer:- Option-B
  17. Let A = `[[1,2,3],[0,5,0],[2,4,3]].
    The cofactor is 5 is
    A:-0
    B:-6
    C:-3
    D:--3

    Correct Answer:- Option-D
    .
  18. If `Delta_(1)= [[1,0,0],[2,3,0],[-1,5,-3]] ` and `Delta_(2)=[[-3,5,-1],[0,3,2],[0,0,1]]` , then
    A:-`Delta_(1)= 2Delta_(2)`
    B:-`Delta_(1)=Delta_(2)`
    C:-`Delta_(1)=-Delta_(2)`
    D:-`2Delta_(1)=Delta_(2)`

    Correct Answer:- Option-B
    .
  19. The coefficient of `p^(2)q^(3)` in the expansion of `(2p-3q)^(5)` is
    A:--1080
    B:-720
    C:--720
    D:-1080

    Correct Answer:- Option-A
    .
  20. sin 390 tan 30 + sin 120 is
    A:-`(1)/(2)`
    B:-`sqrt(3)/(2)`
    C:-`(2)/sqrt(3)`
    D:-1

    Correct Answer:- Option-C
    .
  21. The equation of a straight line making an angle 135° with positive direction of x-axis and cutting an intercept 5 on y axis is
    A:-y=x+5
    B:-y=5x+1
    C:-y=5-x
    D:-y=5x-1

    Correct Answer:- Option-C
    .
  22. `lim_(x->oo)(1+x)^(1/x)` is
    A:-`oo`
    B:-e
    C:-1
    D:-`(1)/(e)`

    Correct Answer:- Option-B
    .
  23. The sum of two numbers is 2. Find the smallest value possible for the sum of the square of one number and the cube of the other
    A:-1.9354
    B:-6
    C:--2.9
    D:-5.3583

    Correct Answer:- Option-A
    .
  24. `int (dx)/((4+x^(2))^(3/2) ` is
    A:-`(3)/(2)(4+x^2)^(1/2) + c`
    B:-`(4)/sqrt(4+x^2)+ c`
    C:-`(x)/(4sqrt(4+x^(2)))` +c
    D:-`(x)/(2)+c`

    Correct Answer:- Option-C
    .
  25. The solution of `dy/dx=(y)/(x(x+1))`
    A:-y (x+1)=c
    B:-xy=c(1+x)
    C:-x(x+y)=cy
    D:-y(x+1)=cx

    Correct Answer:- Option-D
    .
  26. If A is a matrix then A(adj A) is
    A:-lAl
    B:-`A^(-1)`
    C:-lAl I
    D:-I

    Correct Answer:- Option-C
    .
  27. Inverse of the matrix A = `[[cos prop,-sin prop],[sin prop,cos prop]] is`
    A:-`[[cos prop, sin prop],[-sin prop, cos prop]]`
    B:-`[[-cos prop,-sin prop],[sin prop,-cos prop]]`
    C:-`[[cos prop,-sin prop],[-sin prop,-cos prop]]`
    D:-`[[-cos prop,sin prop],[sin prop,cos prop]] `

    Correct Answer:- Option-A
    .
  28. The value of x satisfying the following system is 2x-y+33=8; -x+2y+3=4; 3x+y-43=0
    A:--2
    B:-2
    C:-4
    D:-0

    Correct Answer:- Option-B
    .
  29. Co-efficient of `x^(2)` in the series expansion of `sqrt(4+x)`
    A:-64
    B:-`(-1)/(64)`
    C:-512
    D:-`(1)/(64)`

    Correct Answer:- Option-D
    .
  30. cos t + tan t sin t is
    A:-cos t
    B:--sec t
    C:-cosec t
    D:-sec t

    Correct Answer:- Option-D
    .
  31. The angle between the lines y=`sqrt(3)x+4 and y=(x)/sqrt(3)+2`
    A:-90°
    B:-60°
    C:-30°
    D:-0°

    Correct Answer:- Option-C
    .
  32. The points of discontinuity of f(x)= lxl - 1x-1l are
    A:-x=0,1
    B:-x=0
    C:-x=1
    D:-None of the above

    Correct Answer:- Option-D
    .
  33. The equation to tangent to the curve f(x)=(x+2) (2x+1)² at x = -1 is
    A:-y=3x+2
    B:-y=3-2x
    C:-y=-3x-2
    D:-y=2x+3

    Correct Answer:- Option-C
    .
  34. `int ln(x) dx` is
    A:-ln(x) + c
    B:-`(1)/(x)+ c`
    C:-n ln(x) + c
    D:-x ln(x) -x+c

    Correct Answer:- Option-D
    .
  35. Solution of (1+`x^(2))y^(1) = x(1-y) is`
    A:-y=1+`(c)/sqrt(1+x^(2))`
    B:-y=`sqrt(1+x^(2))+c`
    C:-y=1+c`sqrt(1+x^(2))`
    D:-y`sqrt(1+x^(2))=c`

    Correct Answer:- Option-A
    .
  36. What type of levelling is done if all the readings are taken with a single set up of Dumpy Level?
    A:-Continuous Levelling
    B:-Differential Levelling
    C:-Compound Levelling
    D:-Simple Levelling

    Correct Answer:- Option-D
    .
  37. Which among the following is called fine aggregate?
    A:-Aggregates passing through 4.75mm lS sieve
    B:-Aggregates retained on 4.75mm lS sieve
    C:-Aggregates passing through 0.15mm lS sieve
    D:-Aggregates retained on 0.15mm lS sieve

    Correct Answer:- Option-A
    .
  38. Which of the following is called a deep foundation?
    A:-Raft foundation
    B:-Combined footing
    C:-Well foundation
    D:-Trapezoidal footing

    Correct Answer:- Option-C
    .
  39. Which of the following is called as Beam section?
    A:-Rolled steel angle sections
    B:-TOR steel
    C:-Rolled steel tubes
    D:-Rolled steel I sections

    Correct Answer:- Option-D
    .
  40. Which instrument is used for setting right angles in a chain survey?
    A:-Plumb bob
    B:-Cross staff
    C:-Peg
    D:-Offset rod

    Correct Answer:- Option-B
    .
  41. Choose correct alternative from the followings:
    A:-For cotton fiber, longer the fiber, finer it is
    B:-For cotton fiber, longer the fiber, coarser it is
    C:-For cotton fiber, longer the fiber, more non-uniformity it gets
    D:-None of the above combinations

    Correct Answer:- Option-A
    .
  42. The hollow space in cotton is known as:
    A:-Lumen
    B:-Stomas
    C:-Medulla
    D:-Pores

    Correct Answer:- Option-A
    .
  43. With an increase of moisture content, the strength of a Nylon filament
    A:-Increases
    B:-Decreases
    C:-First increases then decreases
    D:-First decreases then increases

    Correct Answer:- Option-B
    .
  44. Which of the following fibers has excellent elastic recovery?
    A:-Cotton
    B:-Polyester
    C:-Nylon
    D:-Viscose

    Correct Answer:- Option-C
    .
  45. Which of the following fibres has excellent crease resistant?
    A:-Cotton
    B:-Polyster
    C:-Nylon
    D:-Viscose

    Correct Answer:- Option-B
    .
  46. Birefringence of a fibre is the measure of
    A:-Dynamic modulus
    B:-Density
    C:-Orientation
    D:-Crystallinity

    Correct Answer:- Option-C
    .
  47. The presence of functional groups in a fibre can be best determined by
    A:-IR spectroscopy
    B:-NMR spectroscopy
    C:-Differential scanning calorimeter
    D:-X-ray spectroscopy

    Correct Answer:- Option-A
    .
  48. Analysis of fiber structure by means of diffraction of electromagnetic waves is more compatible with x-rays than with ordinary visible light because
    A:-X-rays has higher energy than ordinary light
    B:-X-rays has wave lengths smaller than ordinary light
    C:-It is easy to get picture or photographs with x-rays
    D:-Wave lengths are comparable with crystallite sizes of fibre

    Correct Answer:- Option-D
    .
  49. Electromagnetic waves used in NMR spectroscopy is
    A:-Ultra-violet rays
    B:-Radio waves
    C:-Gamma rays
    D:-Infra-red rays

    Correct Answer:- Option-B
    .
  50. The helix reversal is found in
    A:-Jute
    B:-Wool
    C:-Silk
    D:-Cotton

    Correct Answer:- Option-D
    .
  51. If initial modulus and moment of inertia of a fibre are denoted by E and I, respectively, the bending rigidity of the fibre is expressed as
    A:-E/I
    B:-I/E
    C:-EI²
    D:-EI

    Correct Answer:- Option-D
    .
  52. Which one of the following statements is wrong?
    A:-The density is same for both cotton and viscose
    B:-The degree of polymerization is same for both cotton and viscose
    C:-Both cotton and viscose are hydrophilic fibres
    D:-Both cotton and viscose are the cellulosic fibres

    Correct Answer:- Option-B
    .
  53. Which one of the following statements is correct with respect to a textile fibre?
    A:-It is transversely isotropic
    B:-The primary bond strength is weaker than secondary bond.
    C:-Essentially it is made of short chain molecules.
    D:-It is having very high density.

    Correct Answer:- Option-A
    .
  54. Which one of the following statements is true?
    A:-Glass is 100% crystalline fibre.
    B:-Polypropylene is 100% amorphous fibre.
    C:-Cotton is 50% crystalline fibre.
    D:-Wool is 30% crystalline fibre.

    Correct Answer:- Option-D
    .
  55. Water acts as catalyst for the production of
    A:-Nylon 6
    B:-Acrylic
    C:-Viscose
    D:-Polyester

    Correct Answer:- Option-A
    .
  56. Which of the following fibre properties is not governed by its amorphous content?
    A:-Dye uptake
    B:-Moisture content
    C:-Extensibility
    D:-Friction

    Correct Answer:- Option-D
    .
  57. Which one of the following is the correct order in a DSC heating plot with increasing temperature?
    A:-Glass transition, crystallization, melting
    B:-Melting, glass transition, crystallization
    C:-Crystallization, glass transition, melting
    D:-Glass transition, melting, crystallization

    Correct Answer:- Option-A
    .
  58. Which one of the synthetic filament properties is not controlled by the drawing?
    A:-Orientation
    B:-Crystallinity
    C:-Birefringence
    D:-Molecular weight

    Correct Answer:- Option-D
    .
  59. Which one of the following materials has highest strength/weight ratio?
    A:-Steel
    B:-Nylon
    C:-Kevlar
    D:-Polyester

    Correct Answer:- Option-C
    .
  60. Ziegler-Natta catalyst is essential for the production of
    A:-Kevlar
    B:-Polypropylene
    C:-Acrylic
    D:-Cellulose triacetate

    Correct Answer:- Option-B
    .
  61. If d is the fibre diameter, air-flow rate through a plug of fibres is proportional to
    A:-`sqrt(d)`
    B:-d
    C:-`d^(2)`
    D:- `d^(3)`

    Correct Answer:- Option-C
    .
  62. For a square cut polyester staple fibre, length uniformity index is
    A:-0.5
    B:-0.5128
    C:-0.5328
    D:-1

    Correct Answer:- Option-D
    .
  63. INSTRON® tensile tester works on`INSTRON^(o.)`
    A:-CRL principle
    B:-CRE principle
    C:-CRT principle
    D:-CRS principle

    Correct Answer:- Option-B
    .
  64. As the time to beak increases
    A:-Yarn strength decreases
    B:-Yarn strength increase
    C:-Yarn strength does not change
    D:-Yarn strength first decreases and then increases

    Correct Answer:- Option-A
    .
  65. Most suitable test for parachute fabric is
    A:-Tensile strip strength
    B:-Bursting strength
    C:-Tearing strength
    D:-Tensile grab strength

    Correct Answer:- Option-B
    .
  66. Three verities of cotton fibres of 4.5, 5 and 4.0 micronaire values are blended in weight proportions of 30%, 20% and 50%, respectively. The average micronaire value of mixing is
    A:-4.32
    B:-4.35
    C:-4.40
    D:-4.34

    Correct Answer:- Option-A
    .
  67. If the front top roller of a ring frame having diameter of 1 inch becomes eccentric, at what wave length of spectrogram do you expect a peak?
    A:-8 cm
    B:-2.54 cm
    C:-4 cm
    D:-1.27 cm

    Correct Answer:- Option-A
    .
  68. 8 slivers each with a CVm of 2.8% are fed to a draw frame. If the draw frame adds a CVm of 1%, what will be the CVm of ouput sliver?
    A:-3.8%
    B:-1.1%
    C:-1.41%
    D:-1.8%

    Correct Answer:- Option-C
    .
  69. Low strength mechanical properties are strongly correlated with
    A:-Fabric thermal comfort
    B:-Fabric drape
    C:-Fabric dimensional stability
    D:-Fabric handle

    Correct Answer:- Option-D
    .
  70. Which one of the following parameters has no influence on air permeability?
    A:-Fabric cover factor
    B:-Yarn twist density
    C:-Fabric stiffness
    D:-Fabric porosity

    Correct Answer:- Option-C
    .
  71. What is the GSM (g/m²) of a square jammed plain cloth made from 20 tex cotton yarns of 0.17 mm diameter?
    A:-154
    B:-164
    C:-264
    D:-364

    Correct Answer:- Option-B
    .
  72. Which one of the following statements is false?
    A:-Equally strong but more extensible yarn will lead to higher grab strength.
    B:-The grab strength of a fabric is higher than its strip strength.
    C:-Tear resistance of a fabric is only a fraction of its tensile resistance.
    D:-The grab strength of a fabric reduces as the fabric width increases.

    Correct Answer:- Option-D
    .
  73. If same yarn is used for both wrap and weft, maximum fabric thickness is
    A:-Three times of yarn diameter
    B:-Two times of yarn diameter
    C:-Four times of yarn diameter
    D:-Yarn diameter

    Correct Answer:- Option-A
    .
  74. Thermal resistance values of fabrics in an assembly are
    A:-Multiplicative
    B:-Substractive
    C:-Additive
    D:-Average

    Correct Answer:- Option-C
    .
  75. Shear stress vs. shear strain curve of a fabric shows
    A:-Linearity with hysteresis
    B:-Nonlinearity with hysteresis
    C:-Linearity without hysteresis
    D:-Nonlinearity with hysteresis

    Correct Answer:- Option-B
    .
  76. Self-twist spinning is most suitable for
    A:-Cotton
    B:-Jute
    C:-Flax
    D:-Wool

    Correct Answer:- Option-D
    .
  77. For same count, rotor yarn TM is
    A:-2 times greater than that of ring yarn.
    B:-10-15 % greater than ring yarn.
    C:-Same as ring yarn.
    D:-10-15% lower than ring yarn.

    Correct Answer:- Option-B
    .
  78. In case of Mélange yarn production, with the increase of shade depth
    A:-Yarn quality deteriorates
    B:-Yarn quality remains same
    C:-Yarn quality improves
    D:-Yarn quality firstly improves and then deteriorates

    Correct Answer:- Option-A
    .
  79. In case of air-vortex spinning
    A:-All fibres start from the centre of the yarn and run outside.
    B:-All fibres start from the surface of the yarn and run inside.
    C:-Core fibres are parallel and the sheath fibres are wrapped over the core fibres
    D:-Core fibres have a twist direction which is different from the sheath fibres

    Correct Answer:- Option-A
    .
  80. In comparison with the ring spun yarn, air-jet spun yarn is
    A:-Weaker, stiffer and harder
    B:-Stronger, softer and smoother
    C:-Weaker, bulkier and harsher
    D:-Stronger, hairier and evener

    Correct Answer:- Option-A
    .
  81. Feed per nip of comber is around
    A:-2 mm
    B:-6 mm
    C:-12 mm
    D:-18 mm

    Correct Answer:- Option-B
    .
  82. Self-cleaning action in a comber
    A:-Increases with batt weight
    B:-Decreases with batt weight
    C:-Does not change with batt weight
    D:-Decrease with fibre disorientation

    Correct Answer:- Option-A
    .
  83. Quality of combing is better in
    A:-Forward feed
    B:-Backward feed
    C:-Mixed feed
    D:-Differential feed

    Correct Answer:- Option-B
    .
  84. Which machine in the spinning line is termed as necessary evil for producing ring spun yarn?
    A:-Card
    B:-Comber
    C:-Ring frame
    D:-Speed frame

    Correct Answer:- Option-D
    .
  85. Pressure bar in draw frame is used to
    A:-Apply pressure to the front top roller.
    B:-Apply pressure to the middle top roller.
    C:-Control the long fibre movement.
    D:-Control the short fibre movement.

    Correct Answer:- Option-D
    .
  86. Yarn tension during winding is proportional to the
    A:-`(Yarn tex)^(2)`
    B:-`sqrt(Yarn tex)`
    C:-Yarn tex
    D:-` (1)/(Yarn tex)`

    Correct Answer:- Option-C
    .
  87. A 3.5 crossing drum means there are
    A:-1.75 turns in a double traverse
    B:-3.5 turns in a double traverse
    C:-7 turns in a double traverse
    D:-10.5 turns in a double traverse

    Correct Answer:- Option-C
    .
  88. A loom is weaving the design of 1 up 2 down twill. If the loom is running at 240 rpm, the speed of tappet shaft will be
    A:-60 rpm
    B:-120 rpm
    C:-80 rpm
    D:-240 rpm

    Correct Answer:- Option-C
    .
  89. A Jacquard design is repeating on 20 cm along length and 12 cm along width. If the fabric has 30 ends and 24 picks per cm, the Jacquard capacity is
    A:-240
    B:-580
    C:-360
    D:-480

    Correct Answer:- Option-C
    .
  90. A loom of 500 cm width is running at 800 picks/min. The weft insertion rate of the loom is
    A:-800 m/min
    B:-4000 m/min
    C:-500 m/min
    D:-5000 m/min

    Correct Answer:- Option-B
    .
  91. On a Sulzer® projectile loom, the number of projectiles depends on
    A:-Projectile mass
    B:-Torsion-bar arrangement
    C:-Loom width
    D:-Projectile length

    Correct Answer:- Option-C
    .
  92. Which one of the following phenomena cannot be described by Poisson distribution
    A:-Number of warp breakage on a loom
    B:-Number of fabric defects / square meter
    C:-Number of fibres in the yarn cross-section
    D:-Strength of the warp yarn

    Correct Answer:- Option-D
    .
  93. If 1 Km of yarn produces 900 m fabric, the yarn crimp in the fabric is
    A:-10%
    B:-9%
    C:-11.1%
    D:-10.9%

    Correct Answer:- Option-C
    .
  94. Indigo is a
    A:-Vat dye
    B:-Cationic dye
    C:-Acid dye
    D:-Disperse dye

    Correct Answer:- Option-A
    .
  95. Dyeing of acrylic is carried out by using
    A:-Vat dye
    B:-Cationic dye
    C:-Acid dye
    D:-Disperse dye

    Correct Answer:- Option-B
    .
  96. Acid dyes are held on fabric by means of
    A:-Covalent bond
    B:-Vander wall force
    C:-Electrostatic force
    D:-Electromagnetic force

    Correct Answer:- Option-C
    .
  97. Sublimation transfer printing is most suitable for
    A:-Cotton
    B:-Polyster
    C:-Silk
    D:-Acrylic

    Correct Answer:- Option-B
    .
  98. For printing with reactive dye, most suitable thickener is
    A:-Sodium chloride
    B:-Sodium hypochlorite
    C:-Sodium chlorite
    D:-Sodium alginate

    Correct Answer:- Option-D
    .
  99. Mercerization of a cotton fabric is carried out by
    A:-Sodium chloride
    B:-Sodium hypochlorite
    C:-Sodium hydroxide
    D:-Sodium chlorite

    Correct Answer:- Option-C
    .
  100. For a satin weave (warp face)
    A:-Picks/cm is greater than ends/cm.
    B:-Ends/cm is greater than picks/cm.
    C:-Ends/cm is equal to picks/cm.
    D:-Ends/cm is just less than picks/cm.

    Correct Answer:- Option-B

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