ISRO Scientist or Engineer Civil 2015

ISRO Scientist or Engineer Civil 2015 - Question 1

Report

Granite mainly composed of quartz and feldspar particles, is obtained from

A

Sedimentary rocks

B

Metamorphic rocks

C

Igneous rocks

D

Voleanic rocks

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 2

Report

Inner part of a timber log surrounding thepitch, is called

A

Sapwood

B

Cambium layer

C

Heart wood

D

Soft wood

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 3

Report

Galvanising means covering iron with a thin coat of

A

Tin

B

Zine

C

Glaze

D

Coal tar

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 4

Report

The arrangement of supporting an existing structure by providing supports underneath, is known as

A

Shoring

B

Underpinning

C

dacking

D

Piling

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 5

Report

The type of brick masonry bond in which every course contains both headers and stretchers, is called

A

English bond

B

Flemish bond

C

Russian bond

D

Mixed bond

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 6

Report

The depth of an arch is the distance between

A

Ground level and springing line

B

Crown and springingline

C

Crown and groundlevel

D

Intrados and extrados

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 7

Report

If height of the first storey of a building is 3.25 m and riser is 13 cm, the number of treads required is

A

12

B

18

C

24

D

25

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 8

Report

The pile provided with one or more bulbs in its vertical shaft, is generally known as

A

Under reamedpile

B

Friction-pile

C

Bearing-pile

D

Sheet-pile

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 9

Report

If R is the radius of earth and his the altitude above mean sea level at a location then correction for length L for reduction to mean sea level is

A

$$(\frac{h}{R})$$ (L)

B

(h)(L)(R)

C

$$(\frac{R}{h})$$ (L)

D

$$(\frac{h}{L})$$ (R)

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 10

Report

Whenthe bubbleof the level tube of a level remains central

A

Line of sight is horizontal

B

Axis of the telescope is horizontal

C

Line of sight is inclined

D

Geometrical axis of the telescope is horizontal

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 11

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The direction of steepest slope on a contour is

A

Along the contour

B

At an angle of $$45^\circ$$ to the contour

C

At right angles to the contour

D

Atan angle of $$60^\circ$$ to the contour

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 12

Report

Closed contours of decreasing values towards their centre, represent

A

A hill

B

A depression

C

A saddle or pass

D

A river bed

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 13

Report

The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting to chaining, is known as

A

Plane alidade

B

Telescopic alidade

C

Clinometer

D

Tacheometer

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 14

Report

Longitudes are measured from $$0^\circ$$ to

A

$$180^\circ$$ east ward

B

$$180^\circ$$ west ward

C

$$180^\circ$$ east or westward

D

$$360^\circ$$ eastward

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 15

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If two equal forces of magnitude P act at an angle $$\theta$$, their resultant, will be

A

$$\frac{P \cos \theta }{2}$$

B

$$\frac{2 P \sin \theta }{2}$$

C

$$\frac{P \tan \theta }{2}$$

D

$$\frac{2 P \cos \theta }{2}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 16

Report

The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis is

A

437.5 $$cm^{4}$$

B

337.45 $$cm^{4}$$

C

237.5 $$cm^{4}$$

D

137.45 $$cm^{4}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 17

Report

To double the period ofoscillation of a simple pendulum

A

The massofits bob should be doubled

B

The massofits bob should be quadrupled

C

Its length should be quadrupled

D

Its length should be doubled

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 18

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For perfectly elastic bodies, the value of coefficient of restitution is

A

Zero

B

0.5

C

1.0

D

Between 0 and 1

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 19

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If $$l$$ is the span of a light suspension bridge whose each cable carries total weight $$(\omega)$$ and the central dip is $$y$$, the horizontal pull at each support, is

A

$$\frac{\omega l}{4y}$$

B

$$\frac{\omega l}{8y}$$

C

$$\frac{\omega l}{2y}$$

D

$$\omega l$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 20

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A load of 500 kg waslifted through a distance of 13 cm by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

A

15

B

18

C

20

D

26

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 21

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A simply supported beam of span L carries a total load W which is uniformly distributed.The maximum bending moment M is

A

$$\frac{WL}{2}$$

B

$$\frac{WL}{4}$$

C

$$\frac{WL}{12}$$

D

$$\frac{WL}{8}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 22

Report

If there are ‘m’ unknown numberforces, ‘r’ unknown reaction components and ‘j’ number of joints, then the degreeofstatic indeterminacyofpin-jointed plane frameis given by

A

$$m + r + 2j$$

B

$$m - r + 2j$$

C

$$m + r - 2j$$

D

$$m + r - 3j$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 23

Report

The property of a material by which it can be beatenor rolled into thin plates, is called

A

Malleability

B

Ductility

C

Plasticity

D

Elasticity

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 24

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If the depth of a simply supported beam carrying an isolated load at its centre, is doubled, the deflection of the beam at the centre will be changed by a factor of

A

2

B

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

C

8

D

$$\frac{1}{8}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 25

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Which is the correct statement as per Law of polygon of forces?

A

If any numberofforces acting at point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium

B

If any number offorces acting at point can be representedin direction and magnitude by the sides of polygon, then the forces are in the equilibrium

C

If a polygon representing forces acting at a point is closed then forces are in equilibrium

D

If any numberofforces acting at point can be represented in direction and magnitude by thesides of polygon taken in order, then the forces are in equilibrium

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 26

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Degree of kinematic indeterminacy of a pin jointed plane frameis given by

A

$$2j - r$$

B

$$j - 2r$$

C

$$3j - r$$

D

$$2j + r$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 27

Report

The shapeoffire hose nozzle is generally kept

A

Divergent

B

Convergent

C

Convergent divergent

D

Cylindrical

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 28

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Discharge over an ogee weir remains the same as that of

A

Sharp crested weir

B

Triangular weir

C

Drowned weir

D

Cippoletti weir

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 29

Report

The ratio of hydraulic radius of a pipe running full to the hydraulic radius of a square section of a channel running full whoseside is equal to the diameter of the pipe is

A

1

B

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

C

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

D

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

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 30

Report

Kinematic viscosity equals to

A

Dynamic viscosity $$\div$$ density

B

Dynamic viscosity $$\times$$ density

C

Dynamicviscosity + density

D

Pressure $$\div$$ density

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 31

Report

A fluid in equilibrium can’t sustain

A

Shear stress

B

Compressive stress.

C

Tensile stress

D

Bending stress

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 32

Report

The line of action of the buoyantforce acts through the

A

Centroid of the volumeoffluid vertically above the body

B

Center of the volumeof floating body

C

Center of gravity of any submerged body

D

Center of volume ofthe displaced body

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 33

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Match list I with list II

A

(A)-1, (B)-2, (C)-3, (D)-4

B

(A)-3, (B)-2, (C)-4, (D)-1

C

(A)-3, (B)-2, (C)-1, (D)-4

D

(A)-1, (B)-4, (C)-3, (D)-2

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 34

Report

Isohytes are the imaginary lines joining the points of equal

A

Pressure

B

Height

C

Humidity

D

Rainfall

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 35

Report

Match List-I with List-II and select the correct answer using the code given below the Lists:

A

(A)-4, (B)-2, (C)-3, (D)-1

B

(A)-1, (B)-2, (C)-3, (D)-4

C

(A)-4, (B)-3, (C)-2, (D)-1

D

(A)-1, (B)-3, (C)-2, (D)-4

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 36

Report

Relative humidity is the ratio of actual vapour pressure to the saturation vapour pressure

A

At the same temperature

B

At the same pressure

C

In the same volume

D

In the same atmosphere

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 37

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Toughness index of q soil is defined as the ratio of

A

Plasticity index to consistency index

B

Plasticity index to flow index

C

Liquidity index to flow index

D

Consistency index to liquidity index

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 38

Report

According to BIS classification, the range of silt size particles is

A

4.75 mm to 2.00 mm

B

2.00 mm to 0.425 mm

C

0.425 mm to 0.075 mm

D

0.075 mm to 0.002 mm

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 39

Report

The clay mineral with the largest swelling and shrinkage characteristic is

A

Kaolinite

B

Illite

C

Montmorillonite

D

Rock minerals

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 40

Report

A-soil has liquid limit = 32, plastic limit = 18, shrinkage limit = 8 and natural moisture content = 22%. What will be its liquidity index andplasticity index?

A

0.67 and 15

B

0.285 and 14

C

0.67 and 25

D

0.33 and 20

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 41

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A cohesive soil yields a maximum dry density of 18 $$\frac{KN}{m^{3}}$$ during a standard Proctor Compaction test. If the specific gravity is 2.65, what would beits void ratio?

A

0.552

B

0.444

C

0.712

D

0.583

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 42

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Effective stress on soil

A

Increases voids ratio and decreases permeability

B

Increases both voidsratio and permeability

C

Decreases both voids ratio and permeability

D

Decreases voids ratio and increases permeability

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 43

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The slope of isochrones at any point at a given time indicates the rate of change of

A

Effective stress with time

B

Effective stress with depth

C

Pore water pressure with depth

D

Pore water pressure with time

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 44

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Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time to layer B of the same thickness with double drainage and coefficient of consolidation $$\frac{Cv}{2}$$ to achieve the same degree of consolidation

A

3 months

B

6 months

C

12 months

D

24 months

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 45

Report

In momentdistribution method, the sum of distribution factors of all the members meeting at any joint is always

A

Zero

B

Less than 1

C

1

D

Greater than 1

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 46

Report

To generate the jth column of the flexibility matrix

A

A unit force is applied at co-ordinate j and displacements are calculated at all co-ordinates

B

A unit displacement is applied at co-ordinate j and the forces are calculated at all co-ordinates

C

A unit force is applied at co-ordinate j and the forces are calculated at all co-ordinates

D

A unit displacement is applied at co-ordinate j and the displacements are calculated at all co-ordinates

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 47

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The deformation of a spring produced by a unit loadis called

A

Stiffness

B

Flexibility

C

Influence coefficient

D

Unit strain

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 48

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For determining the velocity of flow of underground water, the most commonly used non-empirical formula is

A

Darey’s formula

B

Slichter’s formula

C

Hazen’s formula

D

Lacey’s formula

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 49

Report

An aquicludeis

A

Anon artesian aquifer

B

An artesian aquifer

C

A solid impermeable layer underlying or overlying an aquifer

D

A large underground water body

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 50

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Slenderness ratio of a compression memberis

A

$$ \frac{Moment of inertia}{Radius of gyration}$$

B

$$\frac{Effective length}{Area of cross-section}$$

C

$$\frac{Effective length}{Radius of gyration}$$

D

$$\frac{Radius of gyration}{Area of cross-section}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 51

Report

The thickness “t” of a single flat lacing should not be less than

A

$$\frac{1}{30^{th}}$$ length between inner end rivets

B

$$\frac{1}{40^{th}}$$ length between inner end rivets

C

$$\frac{1}{50^{th}}$$ length between inner end rivets

D

$$\frac{1}{60^{th}}$$ length between inner end rivets

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 52

Report

Web crippling generally occurs at the point where

A

Concentrated load act

B

Shearing force is minimum

C

Bending moment is maximum

D

Deflection is maximum

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 53

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Stiffeners are used in a plate girder

A

To reduce the compressive stress

B

To reduce the shear stress

C

To take the bearing stress

D

To avoid buckling of web plate

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 54

Report

The normal scour depth D below the designed flood level of a river may be calculated from the Lacey's equation, where C= Constant, Q = Design flood discharge and f=silt factor

A

D=C$$(\frac{Q}{f})$$

B

D=C$$(\frac{Q}{f})^{\frac{1}{2}}$$

C

D=C$$(\frac{Q}{f})^{\frac{5}{3}}$$

D

D=C$$(\frac{Q}{f})^{\frac{1}{3}}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 55

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A fallina canal bed is generally provided, if

A

Ground slope exceeds the designed bed slope

B

Designed bed slope exceeds the ground slope

C

Ground slope is practically the same as the designed bed slope

D

Canal bed is flat

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 56

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The steepest gradient permitted on roads which, in ordinary conditions, does not exceed, is known

A

Ruling gradient

B

Limiting gradient

C

Exceptional gradient

D

Floating gradient

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 57

Report

While calculating the sight distances, the driver's eye above road surface is assumed as

A

60 cms

B

7O cms

C

80 ems

D

120 cms

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 58

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The radius of curvature provided along a transition curve, is

A

Minimum at the beginning and maximum at the end

B

Same throughout its length

C

Equal to the radiusofcircular curve

D

Varying from infinity at the beginning to the radius ofcircular curve at the end

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 59

Report

Staggered rail joints are generally provided

A

On curves

B

On tangents

C

On bridges

D

In tunnels

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 60

Report

The critical activity has

A

Maximum float

B

Minimum float

C

Zero float

D

Variable float

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 61

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According to BIS method of measurement, the order of the sequence is

A

Length, breadth, height

B

Breadth, length, height

C

Height, length, breadth

D

Length, height, breadth

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 62

Report

Which one of the following types of samples is relatively employed for the design of waste water treatment plants?

A

Grab sample

B

Composite sample

C

Integrated sample

D

Any sample

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 63

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In very first stage of decomposition of the organic matter in sewage

A

Nitrites are formed

B

Nitrates are formed

C

Carbon dioxide is formed

D

Ammoniais formed

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 64

Report

The characteristics of fresh and septic sewage respectively are

A

acidic and alkaline

B

alkaline and acidic

C

both acidic

D

both alkaline

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 65

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Ultimate strength to cementis provided by

A

Tri calcium silicate

B

Di calcium silicate

C

Tricalcium aluminate

D

Tetra calcium alumino ferrite

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 66

Report

Strength of concrete increases with

A

increase in water cementratio

B

increase in fineness of cement

C

decrease in curing time

D

decrease in size of aggregate

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 67

Report

The compressive strength of 100 mm cubeof concrete as compared to 150 mm cubeis

A

less

B

more

C

equal

D

less or more as per grade of concrete

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 68

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The individual variation between test strength of concrete cube sample should not be more than

A

$$\pm$$ 5% of average

B

$$\pm$$ 10% of average

C

$$\pm$$ 15% of average

D

$$\pm$$ 20% of average

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 69

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The ratio of maximum shear stress to average shear stress of a beam circular in cross-section, is

A

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

B

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

C

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

D

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

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 70

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In prestressed concrete

A

forces of tension and compression change but lever arm remains unchanged

B

forces of tension and compression remains unchanged but lever arm changes with moment

C

both forces of tension and compression as well as lever arm changes

D

both forces of tension and compression as well as lever arm remains unchanged

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 71

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The value of 

is

A

56

B

88

C

$$ 2\pi$$

D

0

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 72

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The series $$1+\frac{1}{2^{2}}-\frac{1}{3^{2}}-\frac{1}{4^{2}}-\frac{1}{5^{2}}+\frac{1}{6^{2}}-\frac{1}{7^{2}}-\frac{1}{8^{2}}+............\infty$$ is

A

Divergent

B

Oscillatory

C

Conditional convergent

D

Absolute convergent

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 73

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The complete solution of the linear differential equation $$\frac{d^{2} y}{dx^{2}}+(a+b)\frac{dy}{dx}+aby=0$$

A

$$C_{1}e^{-ax}+c_{2}e^{-bx}$$

B

$$C_{1}e^{ax}+c_{2}e^{bx}$$

C

$$C_{1}e^{-ax}-c_{2}e^{-bx}$$

D

$$C_{1}e^{ax}-c_{2}e^{bx}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 74

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To multiply a matrix by scalar K, multiply

A

Any row by K

B

Every element by K

C

Any column by K

D

Every element by $$\frac{1}{K}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 75

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Then the determinant AB has the value

A

4

B

8

C

16

D

32

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 76

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The period of a simple pendulum is $$T = 2\pi \sqrt{\frac{L}{g}}$$.The maximum error in 7 due to the possible error upto 1% in ‘L’ and 2.5% in ‘g’ is

A

1.75%

B

2.5%

C

1%

D

5%

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 77

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The value of $$\int_{0}^{\frac{\pi}{2}} \sin^{2}\theta . \cos^{4}\theta d\theta$$ is

A

$$\pi$$

B

$$2 \pi$$

C

$$\frac{\pi^{2}}{32}$$

D

$$\frac{\pi}{16}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 78

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If $$f(x, y) = x^{3}y - xy^{3}$$, then what is the value of $$[\frac{1}{(\frac{df}{dx})}+\frac{1}{(\frac{df}{dy})}] x = 1, y = 2 ?$$

A

$$\frac{13}{18}$$

B

$$\frac{-9}{18}$$

C

$$\frac{9}{22}$$

D

$$\frac{-13}{22}$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 79

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What is the complete solution for the equation $$x (y - z) p + y(z - x)q = z(x - y)?$$

A

$$\phi  (x + y + z, xyz) = 0$$

B

$$\phi (x + 2y + z, xz) = 0$$

C

$$\phi (2x + y + 2, xyz) = 0$$

D

$$\phi (x + y + z, xy) = 0$$

View Solution

ISRO Scientist or Engineer Civil 2015 - Question 80

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The solution of $$\frac{d^{2}z}{dx^{2}}+z = 0$$ given that when $$x = 0, z = e^{y}$$ and $$\frac{dz}{dx} = 1$$ is

A

$$Z = \cos x+ e^{y} \sin x$$

B

$$Z = \sin x + e^{y} \cos x$$

C

$$Z = \cos x + \sin x$$

D

$$Z = e^{2y} \tan x$$

View Solution