ISRO Scientist or Engineer Civil 2019

ISRO Scientist or Engineer Civil 2019 - Question 1

Report

In a standard penetration test (SPT)for soil, the SPT numberis

A

Penetration depth of sampler in the soil for any given number of blows

B

Number of blows required for 30 cms of penetration of samplerin the soil

C

Numberof blows required for 20 ems of penetration of sampler in the soil

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 2

Report

In the Indian standard classification system of soils,

A

The soils are divided into three major divisions i.e Coarse’grained, Fine grained and Highly organic soils

B

The soils are classified based on mineralogical compositio

C

The soils are classified based on particle size with orWwithout consistency limit

D

The soils are classified as Al to A7 basedion1 Stability of heitie under vehicular load

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 3

Report

Piles used to resist uplift forces are known.as

A

Bear ingpiles

B

Friction piles

C

Anchor piles

D

Batter piles

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 4

Report

The cyclic plate loadtest in £oils>can be adopted to determine the

A

Consolation characteristics of soils

B

Dynamic shear modulus of the soil

C

Permeability characteristics of the soil

D

None Of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 5

Report

Expansion joint in concreteis a type of

A

Construction joint

B

Temporary joint

C

Movementjoint

D

Lockingjoint

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 6

Report

The measurement of workability for tremic concrete will be appropriate by determination of its

A

flow

B

compacting factor

C

Slump

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 7

Report

When the depth of web in a R.C.C T beam exceeds ............ side Tage reinforcement shall be provided.

A

750 mm

B

600 mm

C

500 mm

D

350 mm

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 8

Report

In the case of a continuous beam, if the width of thesupportyis Jess than $$\frac{1}{12}^{th}$$ of the clearspan, then the effective span shall be calculated as

A

Centre to centre of support

B

Clear spanpluseffective depth

C

Clear spanpluseffective depth or centre to-centre of support whicheveris less

D

Clear span pluseffective depthor centre to centre of support whichever is more

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 9

Report

In an under reinforced. R.C.C-beam section , the actual neutral axis falls —-——————— the critical neutral axisof balancedsection

A

Below

B

Above

C

At

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 10

Report

The fineness modulus of aggregates approximatel

A

Is directly proportional to the averagesize of the particle

B

Is inversely proportional to the averagesize of the particles

C

Indicates the water absorption of the aggregate

D

Indicates the modulusofelasticity of the aggregates

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 11

Report

The minimum content of cement specified by 1S 456 -2000 for adoption in concrete work with normal weight aggregate of 20 mm nominal maximum size 15

A

Independent of exposure conditions

B

Independent of grade of cement used

C

Independentof type of concrete i.e. plain or reinforced concrete

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 12

Report

In normal circumstances where ambient temperature does notfall balow 1s C, for a properly cured reinforced concrete slabs spanning up to 4.5 metre®span cast’using ordinary
Portland cement, the props provided can be removed only after a minimum period of

A

3 days

B

7 days

C

14 days

D

2i days

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 13

Report

The representative fraction $$\frac{1}{5000}$$ means that the Seale is

A

1 cm=0.50 metre

B

1 cm=5.0 metre

C

1 cm = 50 metre

D

1 cm = 500 metre

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 14

Report

In the plastic analysis,‘the ratio of plastic moment $$M_{p}$$to the yield moment $$M_{y}$$ is called

A

Plastic hinge

B

Shape factor

C

Load factor

D

Plastic strain

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 15

Report

Two-parallel railway lines are to be connected by a reverse curve, each section of the curve having the sameradius.If the centre line are 8 metre apart and maximumdistance between the-tangent points is 32 metre, the maximum allowable radius of the curves will be

A

4 metre

B

8 metre

C

32 metre

D

48 metre

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 16

Report

The twosteel long columns P of Length L and Q of length 2L have the same cross Section, strength charecteristics and the end conditions .The ratio of buckling load of column P to that of coulumn Q is

A

0.5

B

1.0

C

2.0

D

4.0

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 17

Report

For a given soil mass with a water content of 15%, the void ratio is 0. pS ant eperific gravity of soil particles is 2.6. The degree of saturation of soil is

A

45.60

B

55.80

C

70.90

D

90.20

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 18

Report

Match the dimensionless parameters in Group - I with the corresponding ratios in Group - II.

A

P-3,Q-2, R-4 S-1

B

P-3,Q-4,R-2,S-1

C

P-2,Q-3,R-4,S-1

D

P-1,Q-3,R-2,S-4

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 19

Report

‘An isohyet is a line joining points of

A

Equal temperature

B

Equal humidity

C

Equal evaporation

D

Equal rainfall

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 20

Report

The strength parameter of concrete used in design of plain jointed cement concrete pavement is

A

Flexural strength

B

Compressive strength

C

Tensile strength

D

Shear strength

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 21

Report

The shingle is a

A

Air weathered rock

B

Crushed granite

C

Water bound pebbles

D

Decomposed laterite

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 22

Report

Bulking of sand is caused due to

A

Clay contents

B

Air voids

C

Viscosity

D

Surface moisture

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 23

Report

The refractory bricks are used primarily to resist

A

High temperature

B

High pressure

C

Dampness

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 24

Report

The seasoning of timber is done for

A

Thereasing-moisture content

B

Decreasing moisture content

C

Reducing knots

D

Determiningage of the timber

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 25

Report

The ornamental moulded course placed on the top of a wall is called

A

Cornice

B

Frieze

C

Coping

D

Lintel

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 26

Report

The type of truss suitable for a span of about 3 metreis

A

Fink truss

B

King Post truss

C

Howe truss

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 27

Report

The unit of strain is

A

N-mm

B

N/mm

C

N/sq.mm

D

No unit

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 28

Report

A steel bar of 8mm is heated from $$10^\circ$$ C to $$25^\circ$$ C and the bar is frée.to expand.The bar will induce

A

Tensile stress

B

No stress

C

Compressive stress

D

Shear stress

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 29

Report

Modulus of rigidity is the ratio of

A

Linear stress to linear strain

B

Linear stress to lateral stress

C

Volumetric strain to linear strain

D

Shear stress to shear strain

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 30

Report

A body is subjected a Trevensile stress of 400 MPain one plane accompanied by a simple shear, stress of 150 MPa . The maximum normalstresswill be

A

-100.MPa

B

150MPa

C

50 MPa

D

550 MPa

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 31

Report

The atresein a body, when suddenly loaded is the stress when sameloadis applied gradually

A

Equal to

B

One half

C

Twice

D

Fourtimes

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 32

Report

‘Two beams A and Bofequal span carries samecentral point load. Beam ‘A’ has fixed end supports and Beam‘B’ has simply supported ends. The deflection of Beam ‘A’ will be .................. as comparedto that of Beam‘B’.

A

One eighth

B

One fourth

C

One half

D

Double

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 33

Report

The maximum bending momentof a cantilever beamof length L and carcyinga.gradually varying load from zero at free end to w perunit lengthat the fixed end is a................

A

$$\frac{\omega L}{2}$$

B

$$\omega L$$

C

$$\frac{\omega L^{2}}{2}$$

D

$$\frac{\omega L^{2}}{6}$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 34

Report

Apipeline of 300 mm diameter carryingwater at-an averagevelocity of 5 $$\frac{metre}{sec}$$ branches into two pipes of 150 mm and 200 mm diameter. The total flow rate of discharge of waterin the system is

A

$$ 58 \frac{litres}{sec}$$

B

$$132 \frac{litres}{sec}$$

C

$$ 353 \frac{litres}{sec}$$

D

$$ 832 \frac{litres}{sec}$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 35

Report

The metacentric height iNhe distance between the

A

‘Centre of aravity of the floating body and the centre of buoyancy

B

Centhe of@ravity of the floating body and the metacentre

C

Metaeéntre and the centre of buoyancy

D

Original centre of buoyancy and newcentre of buoyancy

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 36

Report

The hydraulic radius of a circular pipe flowing full and having a diameterof 300 mmis

A

50 mm

B

75 mm

C

150 mm

D

300 mm

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 37

Report

Stoke is the unit of

A

Kinematic viscosity in C.G.S units

B

Dynamic viscosity In M.K.5 units

C

Kinematic viscosity M.K.S units

D

Dynamic viscosity in S.I units

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 38

Report

The shearstress-strain graph for Newtonian fluid is a

A

Straight line

B

Elliptical

C

Parabolic curve

D

Hyperbolic curve

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 39

Report

When the waterin a channelis flowing at critical velocity, the

A

Specific energy will be maximum

B

Specific energy will be minimum

C

Critical depth will be zero

D

None of.the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 40

Report

While surveying a plot of land by the method of plane tabling, the field observations

A

And plotting proceed simultaneousl

B

And plotting do not proceed siniultaneously

C

Are recorded in field books to be plotted later

D

All the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 41

Report

During leveling operations, if the back sight is more than the fore sight, then it indicates that

A

The forward staff is at lower point

B

The back staffis at lower point

C

The difference in level cannot be ascertained

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 42

Report

If the whole circle bearing of a line is $$180^\circ$$, then its reduced bearing is

A

$$N  0^\circ  W$$

B

$$S  0^\circ  W$$

C

$$S$$

D

$$N$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 43

Report

The area of anyirregularfigure of the plotted map is measured with

A

Planimeter

B

Clinometers

C

Optical square

D

Pentagraph

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 44

Report

The horizontal angle between the true meridian and the magnetic meridianis”

A

True bearing

B

Dip

C

Magnetic inclination

D

Magnetic declinati

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 45

Report

If bearing of line XY and XZ are $$26^\circ 10’ and 298^\circ 45’,$$ the value of sndluded’angle ZXYis

A

$$87^\circ 25'$$

B

$$156^\circ 55'$$

C

$$272^\circ 35'$$

D

$$324^\circ 55'$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 46

Report

While measuring the distance between’ the ‘two points, if L is in kilometers, the correction for curvature of earth is

A

$$48.3L^{2} mm$$

B

$$55.2L^{2} mm$$

C

$$62.4L^{2} mm$$

D

$$78.4L^{2} mm$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 47

Report

The unit of measurement of inertia of mass is

A

kg/sq metre

B

kg/metre

C

Kg-sq metre

D

Cubic meter

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 48

Report

To-double the period of oscillation of a simple pendulum with small swings

A

Its length should be quadrupled

B

The mass of the bob should be quadrupled

C

Its length should be doubled

D

The mass of the bob should be doubled

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 49

Report

The vertical distance between the springing line and the highest point on the intrados is called ......... of the arch

A

haunch

B

depth

C

extrados

D

rise

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 50

Report

An artesian spring is formed

A

Whenan aquiclude gets exposed in a valley against a vertical cut

B

Due to the presence of a continuous fault in a rock

C

When a porous strata gets confined between two impervious strata

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 51

Report

The finely divided dispersion of solid particles in water-which are not visible to the naked eye and cannot be removedby ordinary filters are known as

A

Suspended impurities

B

Colloidal impurities

C

Dissolved impurities

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 52

Report

According to Indian standards, the consumption of water per capita per day for nursing homes, boarding schools‘and hostels is

A

85 litres

B

100 litres

C

115 litres

D

135 litres

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 53

Report

If the-depletion of the oxygen is found to be 3 mg/litre after incubating 5 ml of sewage diluted to 250 ml for 5 days at $$20^\circ  C$$ B.O.D of the sewage is

A

150 mg/litre

B

250 mg/litre

C

350 mg/litre

D

400 mg/litre

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 54

Report

In sewers desigued with self cleansing velocity,

A

The bottom is silted

B

The bottom is scoured

C

Both silting and scouring occur at the bottom

D

Neither silting nor scouring occurat the bottom

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 55

Report

‘The sewage treatment units in which biological decomposition of‘organic matter takes place are called

A

Sludge sedimentation tanks

B

Trickling filters

C

Imhoff tanks

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 56

Report

A dry soil sample weighing 120 g has-a’volume-of80 ml and specific gravity 2.7. Its voids ratio is

A

0.5

B

0.6

C

0.7

D

0.8

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 57

Report

The property of : soil which enables to regain partof its strength lost on remoulding in a short timewithout change of moisture content, is called

A

Sensitivity

B

Unconfined compressive strength

C

Thixotripy

D

Relative density

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 58

Report

The coefficient of passive and active earth pressure for a loose sand having anangle of internal friction of $$30^\circ$$ is

A

$$\frac{1}{2},2$$

B

$$2,\frac{1}{2}$$

C

$$\frac{1}{3},3$$

D

$$3,\frac{1}{3}$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 59

Report

Whenthe watertable is underthe base of the footing at a depth equal to half of the width of the footing, the bearing capacityof the soil is reducedto its

A

One-fourth

B

One-half

C

Three-fourth

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 60

Report

The cement concrete from which entrained air and excess water are removed after placing’it in position is called

A

Light weight conerete

B

Prestressed concret|

C

Air entrained concrete

D

Vacuum concrete”

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 61

Report

Efflorescence in cementis caused dueto the exceés\Sof

A

Silica

B

Lime

C

Iron oxide

D

Alklis

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 62

Report

The average shearstress forstructutal steel rolled beamsis calculated by dividing the shear force at the cross section by the

A

Gross Seetional area of the beam

B

Depth of beam

C

Grosssectional area of web

D

Width of flange

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 63

Report

Webcrippling of a structural steel beam occurs due to

A

Failure of the web underconcentrated load

B

Excessive bending moment

C

Minimum shear force

D

Secondary bending moment

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 64

Report

PERT stands for

A

Programme Estimation and Reporting Technique

B

Programme Evaluation and ReviewTechnique

C

Process Estimation and Review Technique

D

Planning Evaluation and Reporting Technique

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 65

Report

As per mohs's scale the hardness of quartz and topaz respectively are

A

7 & 8

B

8 & 7

C

9 & 10

D

10 & 9

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 66

Report

The whole period of cultivation from the time when irrigation water is first supplied for preparation of the ground at the time of sowing to its last watering before harvesting is called

A

Base period

B

Growth period

C

Kor period

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 67

Report

If the crop rice requires, about 10 cms depth of water at an average interval of about 10 days and the crop period ofthe ricé.is 110 days, the delta for the croprice will be

A

10 cms

B

50 cms

C

68 cms

D

110 cms

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 68

Report

A barrel camber for a highway consists of

A

Two Straight slopes with a parabolic crown in the centre

B

A continuous curve either parabolic or elliptical

C

Two straight slopes joining at the centre

D

None of the above

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 69

Report

Creeping of rails can be checkedby using

A

Chairs

B

Bearing plates

C

Spikes

D

Anchors

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 70

Report

The formation width of a highway with no transverse slope on an embankmentis B. The height of the embankment is d and side slope of the embankmentis S: 1, The area of cross
section of the embankment is

A

$$B + d + Sd$$

B

$$B * d + Sd$$

C

$$B * d + sd^{2}$$

D

$$\frac{1}{2} (B * d + Sd^{2})$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 71

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Equation of a line normal to $$f(x) = (x + 4)^{\frac{1}{2}} + 1$$ at Q(0, 3) is:

A

$$y = 3 - 4x$$

B

$$y = 3 + 4x$$

C

$$4y = 12 - x$$

D

$$4y = 12 + x$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 72

Report

Consider the shaded triangle P shown in the figure What is $$\int \int_{p} xy dx dy$$

A

$$\frac{1}{6}$$

B

$$\frac{2}{9}$$

C

$$\frac{7}{16}$$

D

1

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 73

Report

Distance between the origin and the point nearest to it on the surface $$Z^{2}=1+xy$$ is :

A

$$\frac{\sqrt{3}}{2}$$

B

1

C

$$\sqrt{3}$$

D

2

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 74

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At $$x = 0$$, the function $$f(x) = \mid x \mid$$ has

A

A maximum

B

A point of inflection

C

A minimum

D

Neither maximum nor minimum

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 75

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General solution of differential equation $$\frac{dy}{dx} = \cos(x + y)$$

A

$$\tan \left(\frac{x + y}{2}\right) = y + c$$

B

$$\sin \left(\frac{x + y}{2}\right) = y + c$$

C

$$\cos \left(\frac{x + y}{2}\right) = x + c$$

D

$$\tan \left(\frac{x + y}{2}\right) = x + c$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 76

Report

A box contains 2 blue ,3 black, and 4 red balls are dreawn from the box at the random one at a time of replacement . The probability of drawing 2 blue balls first followed by 3
black balls and subsequently 4 red balls is:

A

$$\frac{2}{350}$$

B

$$\frac{1}{629}$$

C

$$\frac{1}{1260}$$

D

$$\frac{1}{24}$$

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 77

Report

Using the trapeZoidal rule and the dividing the interval of integration into three equal sub intervals ,the definite integral $$\int_{-1}^{+1} \mid x \mid dx$$ is :

A

1.11

B

2.22

C

3.33

D

4.44

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 78

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Acircularring of radius 42 cm is cut and bentinto the form of a rectangle whose sides are in the ratio of 6:5. The small side of the rectangleis :

A

80 cm

B

30 cm

C

120 cm

D

60 cm

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 79

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A tank is normally filled in 8 hours buttakes-2‘hours longer tofill because of a leak at the bottom. If the tankis full and due.*°leakagealone, the tank will get empty in ............... hours (Assume nofurther filling happens):

A

20

B

40

C

30

D

50

View Solution

ISRO Scientist or Engineer Civil 2019 - Question 80

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From a circular. sheet of paper having radius 50 cm, a sector of 40% area is removed in the shape of an arc section. If the remaining part is used to make a conical surface, then the ratio of the radius to height of the cone is:

A

$$\frac{4}{3}$$

B

$$\frac{5}{4}$$

C

$$\frac{3}{4}$$

D

$$\frac{7}{8}$$

View Solution