ISRO Scientist or Engineer Civil 2017

ISRO Scientist or Engineer Civil 2017 - Question 1

Report

The resultant of two forces each equal to P and acting at right angles is

A

$$\frac{P}{\sqrt{2}}$$

B

$$\frac{P}{2}$$

C

$$\frac{P}{2 \sqrt{2}}$$

D

$$\sqrt{2}$$ P

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 2

Report

Non coplanar concurrent forces are those forces which

A

Meet at one point, but their lines of action do not lie on the same plane

B

Do not meet at one point and their lines of action do not lie on the same plane

C

Meet at one point and their lines of action also lie on the same plane

D

Do not meet at one point, but their lines of action lie on the same plane

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 3

Report

The point through which the whole weight of the body acts, irrespective of its position, is known as

A

Moment of inertia

B

Centre of mass

C

Centre of percussion

D

Centre of gravity

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 4

Report

The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about an axis passing through its centre of gravity and parallel to width is

A

$$9 cm^{4}$$

B

$$12 cm^{4}$$

C

$$16 cm^{4}$$

D

$$20 cm^{4}$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 5

Report

Modulus of rigidity is the ratio of

A

Linear stress to lateral strain

B

Lateral strain to linear strain

C

Linear stress to linear strain

D

Shear stress to shear strain

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ISRO Scientist or Engineer Civil 2017 - Question 6

Report

Two bars of different materials and same size are subjected to the same tensile force. If the bars have unit elongation in the ratio of 3:5, then the ratio of modulus of elasticity of the two materials will be

A

2:5

B

3:5

C

5:3

D

3:4

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 7

Report

Modular ratio of the two materials is the ratio of

A

Linear stress to linear strain

B

Shear stress to shear strain

C

Their modulus of elasticity’s

D

Their modulus of rigidities

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ISRO Scientist or Engineer Civil 2017 - Question 8

Report

The young’s modulus of a material is 150 GPa and Poisson’s ratio is 0.25, the modulus of rigidity of the material is

A

30 GPa

B

50 GPa

C

60 GPa

D

100 GPa

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 9

Report

A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum normal stress will be

A

-100 MPa

B

250 MPa

C

300 MPa

D

400 MPa

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 10

Report

vessel of 4 $$m^{3}$$ contains oil which weighs 30 kN. The specific weight of the oil is

A

4.5 $$\frac{K N}{m^{3}}$$

B

6 $$\frac{K N}{m^{3}}$$

C

7.5 $$\frac{K N}{m^{3}}$$

D

10 $$\frac{K N}{m^{3}}$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 11

Report

The variation in the volume of a liquid with the variation of pressure is called its

A

Surface tension

B

Compressibility

C

Capillarity

D

Viscosity

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 12

Report

The pressure of a liquid measured with the help of piezometer tube is

A

Vacuum pressure

B

Atmospheric pressure

C

Absolute pressure

D

Gauge pressure

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ISRO Scientist or Engineer Civil 2017 - Question 13

Report

A body floating in a liquid is said to be in a neutral equilibrium, if its metacentre

A

Coincides with its centre of gravity

B

Lies above its centre of gravity

C

Lies below its centre of gravity

D

Lies between the centre of buoyancy and centre of gravity

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 14

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A Pitot tube is used to measure the

A

Velocity of flow at the required point in a pipe

B

Pressure difference between two points in a pipe

C

Total pressure of liquid flowing in a pipe

D

Discharge through a pipe

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 15

Report

When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as

A

Narrow crested weir

B

Broadcrested weir

C

Ogee weir

D

Submerged weir

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 16

Report

In open channels, the specific energy is the

A

Total energy per unit discharge

B

Total energy measured with respect to the datum passing through the bottom of the channel

C

Total energy measured above the horizontal datum

D

Kinetic energy plotted above the free surface of water

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 17

Report

Newton’s law of viscosity is a relationship between

A

Pressure, velocity and temperature

B

Shear stress and rate of shear strain

C

Shear stress and velocity

D

Rate of shear strain and temperature

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 18

Report

The velocity at which the flow changes from laminar flow to turbulent flow is called

A

Critical velocity

B

Velocity of approach

C

Subsonic velocity

D

Supersonic velocity

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 19

Report

When the length of chain used in measuring distance is longer than the standard length, the error in measured distance will be

A

Positive error

B

Mean error

C

Compensating error

D

Negative error

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 20

Report

In a whole circle bearing system N $$20^\circ$$ 15’ W corresponds to

A

$$69^\circ$$ 45’

B

$$290^\circ$$ 45’

C

$$200^\circ$$ 45’

D

$$339^\circ$$ 45’

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 21

Report

The horizontal angle between the true meridian and a survey line is called

A

Magnetic bearing

B

Azimuth

C

Dip

D

Magnetic declination

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ISRO Scientist or Engineer Civil 2017 - Question 22

Report

The lines passing through points at which the magnetic declination is equal at a given time are called

A

Isogonic lines

B

Agonic lines

C

Isoclinic lines

D

Isochrite lines

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 23

Report

A

The latitude is positive and departure is negative

B

The departure is positive and latitude is negative

C

Both latitude and departure are positive

D

Both latitude and departure are negative

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ISRO Scientist or Engineer Civil 2017 - Question 24

Report

The method of plane tabling commonly used for establishing the instrument stations only, is a

A

Method of radiation

B

Method of intersection

C

Method of traversing

D

Method of resection

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 25

Report

The ratio between the area of a crop irrigated and the quantity of water required during its entire period of the growth, is known as

A

Delta

B

Duty

C

Base period

D

Crop period

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 26

Report

Irrigation canals are generally aligned along

A

Contour line

B

Valley line

C

Straight line

D

Water shed

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ISRO Scientist or Engineer Civil 2017 - Question 27

Report

The vertical wells provided along the banks of a river to draw ground water in dry season are called

A

Open wells

B

Tube wells

C

Artesian wells

D

Infiltration wells

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 28

Report

The desirable limit of chloride content as per BIS standards in water for domestic supplies should not exceed

A

250 ppm

B

350 ppm

C

450 ppm

D

550 ppm

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 29

Report

B-coli or E-coli are generally harmless organisms and their presence in water indicates the

A

Presence of pathogenic bacteria

B

Absence of pathogenic bacteria

C

Presence of non pathogenic bacteria

D

Absence of non pathogenic bacteria

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 30

Report

The most common coagulant used in water treatment plants is

A

Magnesium sulphate

B

Alum

C

Chlorine

D

Bleaching powder

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 31

Report

The permanent hardness of water can be removed by

A

Adding alum

B

Adding chlorine

C

Boiling

D

Zeolite process

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 32

Report

Laterite is chemically classified as

A

Calcareous rock

B

Metamorphic rock

C

Siliceous rock

D

Argillaceous rock

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 33

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Excess of alumina in the clay

A

Makes the brick brittle and weak

B

Makes the brick crack and warp on drying

C

Changes colour of the brick from red to yellow

D

Improves impermeability and durability of the brick

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 34

Report

The central part of a tree is called

A

Heart wood

B

Cambium

C

Sap wood

D

Pith

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 35

Report

Fender piles are

A

Used to function as retaining walls

B

Used to protect concrete deck or other water front structures from the abrasion or impact

C

Driven at an inclination to resist large horizontal inclined forces

D

Driven in granular soil with the aim of increasing the bearing capacity of the soil

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 36

Report

A brick which is cut in such a way that the width of its one end is half that of a full brick, is called

A

King closer

B

Mitred closer

C

Beveled closer

D

Queen closer

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 37

Report

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

A

Depth

B

Extrados

C

Haunch

D

Rise

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 38

Report

The super elevation is

A

Directly proportional to the velocity of vehicles

B

Inversely proportional to the velocity of vehicles

C

Directly proportional to the width of pavement

D

Inversely proportional to the width of pavement

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 39

Report

The minimum length of a valley curve should be such that the head light beam sight distance is equal to

A

Stopping sight distance

B

Passing sight distance

C

Braking distance

D

Chord distance

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 40

Report

Junction between the flange and web of a beam is known as

A

Lap joint

B

Butt joint

C

Fillet

D

Shear joint

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 41

Report

Rolled steel equal and unequal sections are designated as ISA followed by

A

Length and thickness of legs

B

Width of flange and depth of web

C

Depth of section

D

Weight per meter length

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 42

Report

A strut is a structural member subjected to

A

Tension in a direction parallel to its longitudinal axis

B

Tension in a direction perpendicular to its longitudinal axis

C

Compression in a direction parallel to its longitudinal axis

D

Compression in a direction perpendicular to its longitudinal axis

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 43

Report

Which of the following is a best compression member section?

A

Single angle section

B

Tubular section

C

Double angle section

D

I section

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 44

Report

The longitudinal movement of the rails in a track is technically known as

A

Buckling

B

Hogging

C

Creeping

D

Cracking

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 45

Report

When two tracks of same or different gauges cross each other at any angle, the crossing provided is

A

Diamond crossing

B

Scissors crossing

C

Level crossing

D

Tongue crossing

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 46

Report

An activity in a project management network is

A

The beginning or end of a specified job

B

An element of work entailed in the project

C

Represented by a circle in a network with a number in it

D

The progress of work up to a certain limit

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 47

Report

A critical activity in a project management network has

A

Maximum float

B

Minimum float

C

Zero float

D

Average float

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 48

Report

The relation between void ratio (e), degree of saturation (s), water content (w) and specific gravity of solids (G) is given by

A

$$e + s = w + G$$

B

$$e \times s = w \times G$$

C

$$\frac{e}{s}=\frac{W}{G}$$

D

$$s+ \frac{e}{w}=G+\frac{e}{s}$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 49

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The difference between maximum void ratio and minimum void ratio of a sand sample is 0.25. If relative density of this sample is 60% at a void ratio of 0.40, then the void ratio of this sample at its loosest state will be

A

0.40

B

0.75

C

0.70

D

0.55

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 50

Report

Which of the following clay mineral gives maximum swelling?

A

Kaolinite

B

Montmorillonite

C

Illite

D

Mica

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 51

Report

Toughness index of the soil is the ratio of

A

Flow index and plasticity index

B

Plasticity index and flow index

C

Liquidity index and flow index

D

Flow index and liquidity index

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 52

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A flow line in seepage through a soil medium is defined as the

A

Path of particles of water through saturated soil mass

B

Line connecting points of equal head of water

C

Flow of movement of fine particles of soil

D

Direction of the flow particle

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 53

Report

The ratio of decrease in voids ratio of soil due to increase in effective stress is called

A

Coefficient of permeability

B

Coefficient of curvature

C

Coefficient of volume compressibility

D

Coefficient of compressibility

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 54

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A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflection of the beams A and B will be

A

$$\frac{8}{5}$$

B

$$\frac{5}{8}$$

C

$$\frac{3}{5}$$

D

$$\frac{5}{3}$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 55

Report

A cantilever beam 2.5m long carries a uniformly distributed load 50 KN per meter over length of 1.5m from the free end. The value of maximum shear force and bending moment for the beam will be respectively;

A

15 KN & 150 KNm

B

10 KN & 131.25 KNm

C

15 KN & 131.25 KNm

D

10 KN & 150 KNm

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 56

Report

When the water table is close to the ground surface, the bearing capacity of a soil is reduced to

A

One fourth

B

One half

C

Two third

D

Three fourth

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 57

Report

Harsh mix of concrete

A

Lacks plasticity

B

Is cohesive

C

Has high cement content

D

Can be easily moulded

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 58

Report

The chemical ingredient of cement which provides quick setting property to the cement is

A

Lime

B

Silica

C

Alumina

D

Iron oxide

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 59

Report

Which of the following cements is expected to have the highest compressive strength after 3 days?

A

Ordinary Portland cement

B

Rapid hardening cement

C

High alumina cement

D

Sulphate resisting cement

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 60

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The phenomenon by virtue of which the cement does not undergo large change in volume when mixed with water, in known as

A

Fineness

B

Soundness

C

Setting time

D

Efflorescence

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 61

Report

A compaction factor of 0.88 indicates that the workability of concrete mix is

A

Very low

B

Low

C

Medium

D

High

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 62

Report

Vertical sides of concrete columns shuttering may be stripped after

A

1 to 2 days

B

7 days

C

14 days

D

21 days

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 63

Report

The section in which concrete is not fully stressed to its permissible value when stress in steel reaches its maximum value, is called

A

Under reinforced section

B

Over reinforced section

C

Critical section

D

Balanced section

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 64

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The effective depth of a singly reinforced rectangular beam is 400 mm. The section is over reinforced and the neutral axis is 180 mm below the top. If the maximum stress attained by concrete is 5 $$\frac{N}{mm^{2}}$$ and the modular ratio is 18, then the stress developed in the steel will be

A

110 $$\frac{N}{mm^{2}}$$

B

135 $$\frac{N}{mm^{2}}$$

C

160 $$\frac{N}{mm^{2}}$$

D

180 $$\frac{N}{mm^{2}}$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 65

Report

If the bond stress developed in a reinforced concrete beam is more than permissible value, it can be brought down by

A

Decreasing the depth of the beam

B

Decreasing the number of bars

C

Decreasing the diameter of the bars

D

Increasing the diameter of the bars

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 66

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A T beam behaves like a rectangular beam of width equal to its flange, if neutral axis

A

Remains outside the flange

B

Remains within the flange

C

Remains below the slab

D

Remains anywhere in the web

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 67

Report

The analysis of slab spanning in one direction is done by assuming it to be a beam of

A

1m length

B

$$1m^{2}$$ area

C

1m width

D

Least thickness

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 68

Report

A reinforced concrete slab is 75 mm thick. The maximum size of reinforcement bar that can be used is

A

6 mm dia

B

8 mm dia

C

10 mm dia

D

12 mm dia

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 69

Report

The drops are provided in flat slabs to resist

A

Torsion

B

Compression

C

Thrust

D

Shear

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 70

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In a reinforced concrete retaining wall, a shear key is provided if the

A

Shear stress in the vertical stem is excessive

B

Shear force in the toe slab is more than that in the heel slab

C

Retaining wall is not safe against sliding

D

Retaining wall is not safe against overturning

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 71

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The value of $$\lim_{x \rightarrow 0} (\tan x \log x)$$ is

A

1

B

$$\tan x$$

C

$$\log x$$

D

0

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 72

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The general solution of the differential equation $$9yy'+4x = 0$$ is, $$( y' = \frac{dy}{dx}$$, C= constant ) 

A

$$9x^{2}+4y^{2}$$=C

B

$$\frac{x^{2}}{9}+\frac{y^{2}}{4}=C$$

C

$$4x^{2}+9y^{2}$$=C

D

$$\frac{x^{2}}{4}-\frac{y^{2}}{9}=C$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 73

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The Laplace transform $$L(e^{at})$$ is, [Note : $$L(f(t)) = \overline f(s)$$]

A

$$\frac{1}{s}$$

B

$$\frac{a}{s+a}$$

C

$$\frac{1}{s-a}$$

D

$$\frac{s}{a}$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 74

Report

The number of sub matrices $$(1 \times 2)$$ of a matrix $$(2 \times 3)$$ is

A

Three

B

Four

C

Five

D

Six

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 75

Report

if $$A = \begin{bmatrix}3 & 2 & -1 \\0 & 4 & 6 \end{bmatrix}$$ and $$B = \begin{bmatrix}1 & 0 & 2 \\5 & 3 & 1\\ 6 &4 & 2 \end{bmatrix}$$ Then the product of the matrices $$AB$$ is

A

$$\begin{bmatrix}4 & 7 & 5 \\0 & 12 & 4 \end{bmatrix}$$

B

$$\begin{bmatrix}7 & 2 & 3 \\16 & 51 & 36 \end{bmatrix}$$

C

$$\begin{bmatrix}7 & 2 & 6 \\56 & 36 & 16 \end{bmatrix}$$

D

$$\begin{bmatrix}16 & 2 & 7 \\56 & 6 &36 \end{bmatrix}$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 76

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If 2 is root of the equation $$2X^{2}+X^{2}-13X+6=0$$, then the equation is exactly divisible by the factor

A

X − 2

B

2X

C

X + 6

D

X +13

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 77

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A determinant $$(\delta)$$ of 3 rows $$(R_{1}, R_{2},R_{3})$$ and 3 columns $$(C_{1}, C_{2},C_{3})$$ has a value $$\delta$$ = 15 . If two columns $$C_{2} and C_{3}$$ of the determinant $$(\delta)$$ are interchanged, then the value of determinant will be

A

15

B

-15

C

45

D

-45

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 78

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If $$u = \sin^{-1} \frac{x + y}{\sqrt{x} + \sqrt{y}}$$ then by Euler’s theorem, $$x. \frac{\partial u}{\partial x}+y .\frac{\partial u}{\partial y}$$ will be

A

$$\frac{1}{2} \sin u$$

B

$$\frac{1}{2} \tan u$$

C

$$x + y$$

D

$$\sin x + \sin y$$

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 79

Report

While calculating the cost of a pile of bricks measured as $$2 m \times 15 m \times 1.2 m$$, the tape is stretched 1% beyond the standard length. If the count is 450 bricks per cubic meter and cost of bricks is Rs. 5,000 per 1000 no’s, the approximate error in the cost is

A

Rs. 2,430

B

Rs. 1,215

C

Rs. 5,000

D

Rs. 1,000

View Solution

ISRO Scientist or Engineer Civil 2017 - Question 80

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The series $$1-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+..............$$ is

A

Convergent

B

Divergent

C

Conditionally Convergent

D

Oscillatory

View Solution