Lecturer in Textile Technology(NCA)-2019(430/2017)



Lecturer in Textile Technology(NCA)

Medium of Question: English

Date of Test 27-08-2019

Department Technical Education

Question Paper Code: 39/2019/OL

Category Code: 430/2017

Question 1 : The power consumed by an ac series circuit is maximum when its power factor is

1. 0

2. 1

3. 0.5

4. 0.8


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2. 1

Question 2 : The protective measure to avoid electric shock while touching electrical appliances is

1. Switch

2. Fuse

3. Lightning arrester

4. Earthing


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4. Earthing

Question 3 : What is the unit of apparent power?

1. Watt-hour

2. Watt-sec

3. VA

4. Watts


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3. VA

Question 4 : In an R-C series circuit, the voltage across each element is 50V. The applied voltage is —–

1. 100V

2. 70.71v

3. 57.23V

4. 50V


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2. 70.71v

Question 5 : What is the effective resistance of a parallel combination of 2Ω, 3Ω and 6Ω

1. 1 Ω

2. 11 Ω

3. 2 Ω

4. 3 Ω


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1. 1 Ω

Question 6 : Choose the correct statement

1. The CFL bulb is an incandescent one.

2. LED bulbs are more efficient than CFL bulbs in terms of power and life.

3. LED bulbs are cheaper than CFL bulbs

4. CFL bulbs remain cool, when operated


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2. LED bulbs are more efficient than CFL bulbs in terms of power and life.

Question 7 : Which of the following is not a constituent of an electro mechanical relay?

1. Spring

2. Pivot

3. Armature

4. Transformer


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4. Transformer

Question 8 : The 8051 micro controller has a data memory of

1. 128 byte RAM

2. 128 byte ROM

3. 128 kilobyte RAM

4. 128 kilobyte ROM


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1. 128 byte RAM

Question 9 : The modulation used in GSM is

1. Gaussian Minimum Shift Keying (GMSK)

2. Amplitude Shift Keying (ASK)

3. Binary Phase Shift Keying (BPSK)

4. Quaternary Phase Shift Keying (QPSK)


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1. Gaussian Minimum Shift Keying (GMSK)

Question 10 : Which of the following e waste component poses a health hazard?

1. Lead

2. Mercury

3. Cadmium

4. All of the above


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4. All of the above


Question 11 : In internal combustion engine, the total energy losses due to pumping and friction converted into power is

1. Brake power

2. Indicated power

3. Friction power

4. Total engine power


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3. Friction power

Question 12 : Which among the following statement is correct?

1. In four-stroke engines, the cooling and lubrication requirement is lesser than in two-stroke engines.

2. A lighter flywheel is needed for four-stroke engines than two-stroke engines.

3. In two-stroke engines, volumetric efficiency is more due to greater time of induction.

4. In four-stroke engines, in each revolution of the crankshaft, four power strokes are obtained.


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1. In four-stroke engines, the cooling and lubrication requirement is lesser than in two-stroke engines.

Question 13 : The basic function of clutch is to

1. support a moving element and to confine its motion

2. transmit power from one shaft to other over considerable distances

3. measure forces and energy

4. control flow of mechanical power within a machine


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4. control flow of mechanical power within a machine

Question 14 : In a thermal (steam) power plant, the feed water is preheated in ——–

1. Air preheater

2. Economiser

3. Condenser

4. Boiler


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2. Economiser

Question 15 : In a hydroelectric power plant, the level of water stored in reservoir is known as ——

1. Hydraulic head

2. Tail water level

3. Headrace

4. Spillway level


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3. Headrace

Question 16 : A matrix A is said to be singular if

1. lAl`!=0`

2. lAl =0

3. `A^(T) =A`

4. `A^(-1)=A`


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2. lAl =0

Question 17 : Let A = `[[1,2,3],[0,5,0],[2,4,3]].The cofactor is 5 is

1. 0

2. 6

3. 3

4. -3


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4. -3

Question 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

1. `Delta_(1)= 2Delta_(2)`

2. `Delta_(1)=Delta_(2)`

3. `Delta_(1)=-Delta_(2)`

4. `2Delta_(1)=Delta_(2)`


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2. `Delta_(1)=Delta_(2)`

Question 19 : The coefficient of `p^(2)q^(3)` in the expansion of `(2p-3q)^(5)` is

1. -1080

2. 720

3. -720

4. 1080


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1. -1080

Question 20 : sin 390 tan 30 + sin 120 is

1. `(1)/(2)`

2. `sqrt(3)/(2)`

3. `(2)/sqrt(3)`

4. 1


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3. `(2)/sqrt(3)`


Question 21 : The equation of a straight line making an angle 135° with positive direction of x-axis and cutting an intercept 5

1. y=x+5

2. y=5x+1

3. y=5-x

4. y=5x-1


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3. y=5-x

Question 22 : `lim_(x->oo)(1+x)^(1/x)` is

1. `oo`

2. e

3. 1

4. `(1)/(e)`


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2. e

Question 23 : The sum of two numbers is 2. Find the smallest value possible for the sum of the square of one number and the

1. 1.9354

2. 6

3. -2.9

4. 5.3583


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1. 1.9354

Question 24 : `int (dx)/((4+x^(2))^(3/2) ` is

1. `(3)/(2)(4+x^2)^(1/2) + c`

2. `(4)/sqrt(4+x^2)+ c`

3. `(x)/(4sqrt(4+x^(2)))` +c

4. `(x)/(2)+c`


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3. `(x)/(4sqrt(4+x^(2)))` +c

Question 25 : The solution of `dy/dx=(y)/(x(x+1))`

1. y (x+1)=c

2. xy=c(1+x)

3. x(x+y)=cy

4. y(x+1)=cx


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4. y(x+1)=cx

Question 26 : If A is a matrix then A(adj A) is

1. lAl

2. `A^(-1)`

3. lAl I

4. I


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3. lAl I

Question 27 : Inverse of the matrix A = `[[cos prop,-sin prop],[sin prop,cos prop]] is`

1. `[[cos prop, sin prop],[-sin prop, cos prop]]`

2. `[[-cos prop,-sin prop],[sin prop,-cos prop]]`

3. `[[cos prop,-sin prop],[-sin prop,-cos prop]]`

4. `[[-cos prop,sin prop],[sin prop,cos prop]] `


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1. `[[cos prop, sin prop],[-sin prop, cos prop]]`

Question 28 : The value of x satisfying the following system is 2x-y+33=8; -x+2y+3=4; 3x+y-43=0

1. -2

2. 2

3. 4

4. 0


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2. 2

Question 29 : Co-efficient of `x^(2)` in the series expansion of `sqrt(4+x)`

1. 64

2. `(-1)/(64)`

3. 512

4. `(1)/(64)`


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4. `(1)/(64)`

Question 30 : cos t + tan t sin t is

1. cos t

2. -sec t

3. cosec t

4. sec t


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4. sec t


Question 31 : The angle between the lines y=`sqrt(3)x+4 and y=(x)/sqrt(3)+2`

1. 90°

2. 60°

3. 30°

4. 0°


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3. 30°

Question 32 : The points of discontinuity of f(x)= lxl – 1x-1l are

1. x=0,1

2. x=0

3. x=1

4. None of the above


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4. None of the above

Question 33 : The equation to tangent to the curve f(x)=(x+2) (2x+1)² at x = -1 is

1. y=3x+2

2. y=3-2x

3. y=-3x-2

4. y=2x+3


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3. y=-3x-2

Question 34 : `int ln(x) dx` is

1. ln(x) + c

2. `(1)/(x)+ c`

3. n ln(x) + c

4. x ln(x) -x+c


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4. x ln(x) -x+c

Question 35 : Solution of (1+`x^(2))y^(1) = x(1-y) is`

1. y=1+`(c)/sqrt(1+x^(2))`

2. y=`sqrt(1+x^(2))+c`

3. y=1+c`sqrt(1+x^(2))`

4. y`sqrt(1+x^(2))=c`


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1. y=1+`(c)/sqrt(1+x^(2))`

Question 36 : What type of levelling is done if all the readings are taken with a single set up of Dumpy Level?

1. Continuous Levelling

2. Differential Levelling

3. Compound Levelling

4. Simple Levelling


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4. Simple Levelling

Question 37 : Which among the following is called fine aggregate?

1. Aggregates passing through 4.75mm lS sieve

2. Aggregates retained on 4.75mm lS sieve

3. Aggregates passing through 0.15mm lS sieve

4. Aggregates retained on 0.15mm lS sieve


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1. Aggregates passing through 4.75mm lS sieve

Question 38 : Which of the following is called a deep foundation?

1. Raft foundation

2. Combined footing

3. Well foundation

4. Trapezoidal footing


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3. Well foundation

Question 39 : Which of the following is called as Beam section?

1. Rolled steel angle sections

2. TOR steel

3. Rolled steel tubes

4. Rolled steel I sections


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4. Rolled steel I sections

Question 40 : Which instrument is used for setting right angles in a chain survey?

1. Plumb bob

2. Cross staff

3. Peg

4. Offset rod


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2. Cross staff


Question 41 : Choose correct alternative from the followings:

1. For cotton fiber, longer the fiber, finer it is

2. For cotton fiber, longer the fiber, coarser it is

3. For cotton fiber, longer the fiber, more non-uniformity it gets

4. None of the above combinations


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1. For cotton fiber, longer the fiber, finer it is

Question 42 : The hollow space in cotton is known as:

1. Lumen

2. Stomas

3. Medulla

4. Pores


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1. Lumen

Question 43 : With an increase of moisture content, the strength of a Nylon filament

1. Increases

2. Decreases

3. First increases then decreases

4. First decreases then increases


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2. Decreases

Question 44 : Which of the following fibers has excellent elastic recovery?

1. Cotton

2. Polyester

3. Nylon

4. Viscose


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3. Nylon

Question 45 : Which of the following fibres has excellent crease resistant?

1. Cotton

2. Polyster

3. Nylon

4. Viscose


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2. Polyster

Question 46 : Birefringence of a fibre is the measure of

1. Dynamic modulus

2. Density

3. Orientation

4. Crystallinity


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3. Orientation

Question 47 : The presence of functional groups in a fibre can be best determined by

1. IR spectroscopy

2. NMR spectroscopy

3. Differential scanning calorimeter

4. X-ray spectroscopy


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1. IR spectroscopy

Question 48 : Analysis of fiber structure by means of diffraction of electromagnetic waves is more compatible with x-rays than with ordinary visible light because

1. X-rays has higher energy than ordinary light

2. X-rays has wave lengths smaller than ordinary light

3. It is easy to get picture or photographs with x-rays

4. Wave lengths are comparable with crystallite sizes of fibre


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4. Wave lengths are comparable with crystallite sizes of fibre

Question 49 : Electromagnetic waves used in NMR spectroscopy is

1. Ultra-violet rays

2. Radio waves

3. Gamma rays

4. Infra-red rays


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2. Radio waves

Question 50 : The helix reversal is found in

1. Jute

2. Wool

3. Silk

4. Cotton


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4. Cotton


Question 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

1. E/I

2. I/E

3. EI²

4. EI


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4. EI

Question 52 : Which one of the following statements is wrong?

1. The density is same for both cotton and viscose

2. The degree of polymerization is same for both cotton and viscose

3. Both cotton and viscose are hydrophilic fibres

4. Both cotton and viscose are the cellulosic fibres


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2. The degree of polymerization is same for both cotton and viscose

Question 53 : Which one of the following statements is correct with respect to a textile fibre?

1. It is transversely isotropic

2. The primary bond strength is weaker than secondary bond.

3. Essentially it is made of short chain molecules.

4. It is having very high density.


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1. It is transversely isotropic

Question 54 : Which one of the following statements is true?

1. Glass is 100% crystalline fibre.

2. Polypropylene is 100% amorphous fibre.

3. Cotton is 50% crystalline fibre.

4. Wool is 30% crystalline fibre.


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4. Wool is 30% crystalline fibre.

Question 55 : Water acts as catalyst for the production of

1. Nylon 6

2. Acrylic

3. Viscose

4. Polyester


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1. Nylon 6

Question 56 : Which of the following fibre properties is not governed by its amorphous content?

1. Dye uptake

2. Moisture content

3. Extensibility

4. Friction


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4. Friction

Question 57 : Which one of the following is the correct order in a DSC heating plot with increasing temperature?

1. Glass transition, crystallization, melting

2. Melting, glass transition, crystallization

3. Crystallization, glass transition, melting

4. Glass transition, melting, crystallization


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1. Glass transition, crystallization, melting

Question 58 : Which one of the synthetic filament properties is not controlled by the drawing?

1. Orientation

2. Crystallinity

3. Birefringence

4. Molecular weight


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4. Molecular weight

Question 59 : Which one of the following materials has highest strength/weight ratio?

1. Steel

2. Nylon

3. Kevlar

4. Polyester


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3. Kevlar

Question 60 : Ziegler-Natta catalyst is essential for the production of

1. Kevlar

2. Polypropylene

3. Acrylic

4. Cellulose triacetate


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2. Polypropylene


Question 61 : If d is the fibre diameter, air-flow rate through a plug of fibres is proportional to

1. `sqrt(d)`

2. d

3. `d^(2)`

4. `d^(3)`


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3. `d^(2)`

Question 62 : For a square cut polyester staple fibre, length uniformity index is

1. 0.5

2. 0.5128

3. 0.5328

4. 1


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4. 1

Question 63 : INSTRON® tensile tester works on`INSTRON^(o.)`

1. CRL principle

2. CRE principle

3. CRT principle

4. CRS principle


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2. CRE principle

Question 64 : As the time to beak increases

1. Yarn strength decreases

2. Yarn strength increase

3. Yarn strength does not change

4. Yarn strength first decreases and then increases


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1. Yarn strength decreases

Question 65 : Most suitable test for parachute fabric is

1. Tensile strip strength

2. Bursting strength

3. Tearing strength

4. Tensile grab strength


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2. Bursting strength

Question 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

1. 4.32

2. 4.35

3. 4.40

4. 4.34


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1. 4.32

Question 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?

1. 8 cm

2. 2.54 cm

3. 4 cm

4. 1.27 cm


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1. 8 cm

Question 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?

1. 3.8%

2. 1.1%

3. 1.41%

4. 1.8%


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3. 1.41%

Question 69 : Low strength mechanical properties are strongly correlated with

1. Fabric thermal comfort

2. Fabric drape

3. Fabric dimensional stability

4. Fabric handle


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4. Fabric handle

Question 70 : Which one of the following parameters has no influence on air permeability?

1. Fabric cover factor

2. Yarn twist density

3. Fabric stiffness

4. Fabric porosity


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3. Fabric stiffness


Question 71 : What is the GSM (g/m²) of a square jammed plain cloth made from 20 tex cotton yarns of 0.17 mm diameter?

1. 154

2. 164

3. 264

4. 364


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2. 164

Question 72 : Which one of the following statements is false?

1. Equally strong but more extensible yarn will lead to higher grab strength.

2. The grab strength of a fabric is higher than its strip strength.

3. Tear resistance of a fabric is only a fraction of its tensile resistance.

4. The grab strength of a fabric reduces as the fabric width increases.


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4. The grab strength of a fabric reduces as the fabric width increases.

Question 73 : If same yarn is used for both wrap and weft, maximum fabric thickness is

1. Three times of yarn diameter

2. Two times of yarn diameter

3. Four times of yarn diameter

4. Yarn diameter


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1. Three times of yarn diameter

Question 74 : Thermal resistance values of fabrics in an assembly are

1. Multiplicative

2. Substractive

3. Additive

4. Average


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3. Additive

Question 75 : Shear stress vs. shear strain curve of a fabric shows

1. Linearity with hysteresis

2. Nonlinearity with hysteresis

3. Linearity without hysteresis

4. Nonlinearity with hysteresis


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2. Nonlinearity with hysteresis

Question 76 : Self-twist spinning is most suitable for

1. Cotton

2. Jute

3. Flax

4. Wool


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4. Wool

Question 77 : For same count, rotor yarn TM is

1. 2 times greater than that of ring yarn.

2. 10-15 % greater than ring yarn.

3. Same as ring yarn.

4. 10-15% lower than ring yarn.


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2. 10-15 % greater than ring yarn.

Question 78 : In case of Mélange yarn production, with the increase of shade depth

1. Yarn quality deteriorates

2. Yarn quality remains same

3. Yarn quality improves

4. Yarn quality firstly improves and then deteriorates


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1. Yarn quality deteriorates

Question 79 : In case of air-vortex spinning

1. All fibres start from the centre of the yarn and run outside.

2. All fibres start from the surface of the yarn and run inside.

3. Core fibres are parallel and the sheath fibres are wrapped over the core fibres

4. Core fibres have a twist direction which is different from the sheath fibres


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1. All fibres start from the centre of the yarn and run outside.

Question 80 : In comparison with the ring spun yarn, air-jet spun yarn is

1. Weaker, stiffer and harder

2. Stronger, softer and smoother

3. Weaker, bulkier and harsher

4. Stronger, hairier and evener


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1. Weaker, stiffer and harder


Question 81 : Feed per nip of comber is around

1. 2 mm

2. 6 mm

3. 12 mm

4. 18 mm


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2. 6 mm

Question 82 : Self-cleaning action in a comber

1. Increases with batt weight

2. Decreases with batt weight

3. Does not change with batt weight

4. Decrease with fibre disorientation


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1. Increases with batt weight

Question 83 : Quality of combing is better in

1. Forward feed

2. Backward feed

3. Mixed feed

4. Differential feed


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2. Backward feed

Question 84 : Which machine in the spinning line is termed as necessary evil for producing ring spun yarn?

1. Card

2. Comber

3. Ring frame

4. Speed frame


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4. Speed frame

Question 85 : Pressure bar in draw frame is used to

1. Apply pressure to the front top roller.

2. Apply pressure to the middle top roller.

3. Control the long fibre movement.

4. Control the short fibre movement.


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4. Control the short fibre movement.

Question 86 : Yarn tension during winding is proportional to the

1. `(Yarn tex)^(2)`

2. `sqrt(Yarn tex)`

3. Yarn tex

4. ` (1)/(Yarn tex)`


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3. Yarn tex

Question 87 : A 3.5 crossing drum means there are

1. 1.75 turns in a double traverse

2. 3.5 turns in a double traverse

3. 7 turns in a double traverse

4. 10.5 turns in a double traverse


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3. 7 turns in a double traverse

Question 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

1. 60 rpm

2. 120 rpm

3. 80 rpm

4. 240 rpm


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3. 80 rpm

Question 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

1. 240

2. 580

3. 360

4. 480


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3. 360

Question 90 : A loom of 500 cm width is running at 800 picks/min. The weft insertion rate of the loom is

1. 800 m/min

2. 4000 m/min

3. 500 m/min

4. 5000 m/min


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2. 4000 m/min


Question 91 : On a Sulzer® projectile loom, the number of projectiles depends on

1. Projectile mass

2. Torsion-bar arrangement

3. Loom width

4. Projectile length


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3. Loom width

Question 92 : Which one of the following phenomena cannot be described by Poisson distribution

1. Number of warp breakage on a loom

2. Number of fabric defects / square meter

3. Number of fibres in the yarn cross-section

4. Strength of the warp yarn


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4. Strength of the warp yarn

Question 93 : If 1 Km of yarn produces 900 m fabric, the yarn crimp in the fabric is

1. 10%

2. 9%

3. 11.1%

4. 10.9%


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3. 11.1%

Question 94 : Indigo is a

1. Vat dye

2. Cationic dye

3. Acid dye

4. Disperse dye


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1. Vat dye

Question 95 : Dyeing of acrylic is carried out by using

1. Vat dye

2. Cationic dye

3. Acid dye

4. Disperse dye


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2. Cationic dye

Question 96 : Acid dyes are held on fabric by means of

1. Covalent bond

2. Vander wall force

3. Electrostatic force

4. Electromagnetic force


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3. Electrostatic force

Question 97 : Sublimation transfer printing is most suitable for

1. Cotton

2. Polyster

3. Silk

4. Acrylic


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2. Polyster

Question 98 : For printing with reactive dye, most suitable thickener is

1. Sodium chloride

2. Sodium hypochlorite

3. Sodium chlorite

4. Sodium alginate


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4. Sodium alginate

Question 99 : Mercerization of a cotton fabric is carried out by

1. Sodium chloride

2. Sodium hypochlorite

3. Sodium hydroxide

4. Sodium chlorite


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3. Sodium hydroxide

Question 100 : For a satin weave (warp face)

1. Picks/cm is greater than ends/cm.

2. Ends/cm is greater than picks/cm.

3. Ends/cm is equal to picks/cm.

4. Ends/cm is just less than picks/cm.


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2. Ends/cm is greater than picks/cm.



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

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