Overseer (civil) Gr II / Drafts-man Gr.II Answer Key

Question 1

Geologically marble is known as

A

sedimentary rock

B

metamorphic rock

C

igneous rock

D

foliated rock

Question 2

The function of gypsum in cement is to

A

retard initial setting time

B

accelerate initial setting time

C

impart strength

D

increase workability

Question 3

The frog of brick is normally laid on its

A

top face

B

bottom face

C

side

D

longer face

Question 4

Linseed oil is used in paint as

A

base

B

vehicle

C

drier

D

thinner

Question 5

Brass is an alloy of

A

copper and zinc

B

zinc and lead

C

tin and silver

D

zinc and nickel

Question 6

The brick laid with its breadth parallel to the face of the wall is known as

A

stretcher

B

header

C

king closer

D

queen closer

Question 7

Flemish bond is a type of bond in which the masonry contains

A

headers and stretchers are laid alternately in the same course

B

headers and stretchers are laid in alternate courses

C

stretchers are laid in every course

D

headers are laid in every course

Question 8

The under surface of an arch is called

A

intrados

B

haunch

C

key

D

soffit

Question 9

The highest line of sloping roof where two opposite slopes meet is known as

A

ridge

B

rafter

C

eave

D

purlin

Question 10

The main principle of surveying is to work

A

from whole to part

B

from part to whole

C

from higher level to lower level

D

from lower level to higher level

Question 11

A well conditioned triangle does not have any angle less than

A

30 degree

B

20 degree

C

60 degree

D

90 degree

Question 12

An imaginary line joining points of equal elevation on the surface of the earth represents

A

level line

B

horizontal line

C

contour surface

D

contour line

Question 13

The zero of the graduated circle of a prismatic compass is located at

A

north end

B

south end

C

east end

D

west end

Question 14

A clinometers is used for

A

setting out right angles

B

measuring volume

C

measuring angle of slope

D

contour gradient

Question 15

The method of surveying in which field work and plotting work are done simultaneously is called

A

plane table survey

B

compass survey

C

chain survey

D

leveling

Question 16

Pantagraph is used for

A

measuring distances

B

measuring areas

C

setting out right angles

D

enlarging or reducing plans

Question 17

The centre of gravity of a plane lamina will not be at its geometrical centre if it is a

A

right angled triangle

B

equilateral triangle

C

circle

D

square

Question 18

The moment of inertia of a triangular section with base b, height h about centroidal axis parallel to base is

A

bh^3/12

B

bh^3/36

C

b^3h/36

D

bh^3/3

Question 19

Every material obeys the Hooke’s law within its

A

shrinkage limit

B

elastic limit

C

plastic limit

D

none of these

Question 20

Strain energy is the energy

A

energy stored in a body when strained within elastic limit

B

maximum strain energy stored in a body

C

energy stored in a body when strained up to breaking of a specimen

D

proof resilience per unit volume of a material

Question 21

The bending equation is

A

M/I=F/y=E/R

B

M/I=y/F=E/R

C

I/M=F/y=E/R

D

M/I=F/y=R/E

Question 22

When a cantilever beam is loaded at its free end, the maximum compressive stress develop at

A

bottom fibre

B

top fibre

C

neutral axis

D

centre of gravity

Question 23

The shear force at the free end of a cantilever beam of length l carrying a uniformly distributed load of w/unit length is

A

wl/4

B

wl/2

C

zero

D

wl

Question 24

Point of contraflexure occurs in

A

cantilever beam

B

simply supported beam

C

overhanging beam

D

fixed beam

Question 25

The maximum shear stress developed in a beam of rectangular section is

A

equal to average shear stress

B

4/3 times average shear stress

C

2 times average shear stress

D

1.5 times average shear stress

Question 26

Differential manometers are used to measure

A

pressure in water channels, pipes etc

B

difference in pressure at two points

C

atmospheric pressure

D

very low pressure

Question 27

If H is the depth of water retained by a vertical wall, the height of centre of pressure above the bottom is

A

H/2

B

H/3

C

H/4

D

2H/3

Question 28

An ideal fluid

A

is frictionless and incompressible

B

obeys Newton"s law of viscosity

C

is very viscous

D

similar to gas

Question 29

Critical depth h of a channel is

A

h = v^2/2g

B

h = v^2/g

C

h = v/2g

D

none of the above

Question 30

A piezometer tube is used only for measuring

A

high pressure

B

moderate pressure

C

vacuum pressure

D

low pressure

Question 31

Symon"s rain gauge is

A

tipping bucket gauge

B

weighing type gauge

C

float recording gauge

D

non recording gauge

Question 32

The rainfall cycle period in India is taken as

A

15 years

B

20 years

C

30 years

D

35 years

Question 33

The fall of moisture from atmosphere to the earth surface in any form is called

A

precipitation

B

evaporation

C

transpiration

D

condensation

Question 34

A canal aligned nearly parallel to the contours of a country is known as

A

side slope canal

B

watershed canal

C

contour canal

D

ridge canal

Question 35

A solid construction put across the river to raise its water level and divert into the canal is known as

A

marginal bund

B

weir

C

dam

D

barrage

Question 36

Permanent hardness of water can be removed by

A

adding alum

B

adding lime

C

boiling

D

zeolite process

Question 37

The maximum permissible chloride content in treated water of public water supplies should not exceed

A

5 ppm

B

100 ppm

C

250 ppm

D

150 ppm

Question 38

In rapid sand filter air binding is caused due to excessive

A

negative pressure

B

pressure

C

water pressure

D

turbidity

Question 39

The gas which may cause explosion in sewers is,

A

carbon dioxide

B

methane

C

ammonia

D

carbon monoxide

Question 40

Removal of oil and grease from sewage is known as

A

screening

B

skimming

C

filteration

D

oxidation

Question 41

Surge tanks are used to

A

for storage of water

B

to increase the velocity in a pipe line

C

as overflow valves

D

to guard against water hammer

Question 42

The level of underground water is called

A

water level

B

water table

C

negative level

D

invert level

Question 43

Talus is the soil transported by

A

wind

B

water

C

gravitational force

D

glacier

Question 44

Minimum size of the particles of silt soil is

A

0.002 mm

B

0.04 mm

C

0.06 mm

D

0.08 mm

Question 45

The portion of road surface used for vehicular traffic only is known as

A

permanent way

B

carriage way

C

shoulder

D

expressway

Question 46

The rate of rise or fall of a road surface along its alignment is called

A

gradient

B

super elevation

C

camber

D

banking

Question 47

The width of top portion of flat footed rail is

A

66.67 mm

B

69.80 mm

C

73.25 mm

D

75.88 mm

Question 48

The track from which train divert is known as

A

turn out

B

main line

C

crossing

D

point

Question 49

Which one of the following is used to fix flat footed rails on wooden sleepers ?

A

fish plate

B

ballast

C

bearing plate

D

fish bolt

Question 50

A camber consisting of two straight slopes joining at the centre is called

A

barrel camber

B

composite camber

C

elliptical camber

D

sloped camber

Question 51

The diameter of longitudinal bars in a column should not be less than

A

6 mm

B

16 mm

C

20 mm

D

12 mm

Question 52

In a doubly reinforced beam, steel reinforcement is provided in

A

tension zone

B

compression zone

C

either tension or compression

D

none of the above

Question 53

CPm is

A

activity oriented

B

event oriented

C

time oriented

D

resource oriented

Question 54

A bar chart is drawn by

A

time versus activity

B

activity versus resource

C

resource versus time

D

progress versus time

Question 55

Bulk density of a soil is defined as the ratio of

A

Total mass of soil to the total volume of soil

B

Weight of water to the weight of solid

C

Unit weight of solid to unit weight of water

D

Weight of solid to volume of solid

Question 56

If w is the water content and y is the unit weight of soil mass, then total unit weight of dry soil yd is equal to

A

w/Y + 1

B

Y/w + 1

C

Y/(1 + w)

D

(1 + w)/Y

Question 57

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

A

balanced section

B

over reinforced section

C

under reinforced section

D

critical section

Question 58

The longitudinal shearing stress acting on the surface between the steel and concrete are called

A

tensile stresses

B

compressive stresses

C

bond stresses

D

hoop stress

Question 59

The spacing of vertical stirrups in a rectangular beam is

A

minimum near the supports

B

maximum near the centre

C

minimum near the centre

D

maximum near the supports

Question 60

The section of a beam having greater width at the top in comparison to the width below neutral axis is known as

A

Critical section

B

T section

C

L section

D

None of these

Question 61

The most reliable estimate is

A

detailed estimate

B

preliminary estimate

C

plinth area estimate

D

cube rate estimate

Question 62

According to ISI method of measurement the order is in the sequence

A

length, breadth, height

B

breadth, length, height

C

height, length, breadth

D

none of the above

Question 63

The minimum width of septic tank is taken as

A

70 cm

B

75 cm

C

80 cm

D

90 cm

Question 64

The height of sink of wash basin above floor level kept

A

60 cm

B

70 cm

C

75 to 80 cm

D

90 cm

Question 65

Pick up the sedimentary rock from the following.

A

slate

B

gneiss

C

marble

D

limestone

Question 66

In living trees the growth is due to

A

pith

B

heart wood

C

cambium

D

sapwood

Question 67

The percentage of silica in the composition of Portland cement is

A

64

B

22

C

6

D

5

Question 68

The external corner of wall surface is known as

A

corner

B

stretcher

C

perpend

D

quoin

Question 69

Line ranger is used for

A

prolongation of the chain line

B

setting right angles to the chain line

C

bisecting the chain line

D

fixing intermediate points on the chain line

Question 70

If the degree of a curve is 4.5, the radius of the curve is

A

372 m

B

376 m

C

382 m

D

390 m

Question 71

The vertical distance between total energy line and hydraulic gradient line represents

A

static head

B

velocity head

C

pressure head

D

datum

Question 72

Which is the rigid pavement from the following ?

A

water bound macadam pavement

B

bituminous pavement

C

gravel pavement

D

cement concrete pavement

Question 73

The artificial barrier constructed in sea for making the enclosed area safe for the anchorage of ships

A

Dock wall

B

Break water

C

Quay

D

Harbour

Question 74

Lime obtained from stones containing high percentage of aluminium silicate is called

A

eminently hydraulic lime

B

semi hydraulic lime

C

fat lime

D

kankar lime

Question 75

The material which possesses elastic properties in all directions at any point is called

A

Homogeneous material 1

B

Anisotropic material

C

Aeolotropic material

D

Isotropic material

Question 76

At the equator the amount of dip in degrees

A

zero

B

45

C

90

D

60

Question 77

The lines passing through the points of equal magnetic declination

A

isogonic line

B

agonic line

C

isoclinic line

D

none of these

Question 78

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 well

Question 79

As per Indian standards water consumption per capita per day for domestic purpose is

A

85 litres

B

100 litres

C

135 litres

D

110 litres

Question 80

In a shunting signal if the red band is horizontal it indicates

A

stop

B

proceed cautiously

C

proceed

D

none of these

Question 81

A track assembly used for diverting train from one track to another is known as

A

turn out

B

crossing

C

junction

D

point

Question 82

A defined area of the airport to accommodate aircrafts for loading and unloading of cargo and passengers, parking, refueling etc. are known as

A

runway

B

taxiway

C

apron

D

hangar

Question 83

The intermediate supports for the superstructure of a multi span bridge are known as

A

abutment

B

piers

C

wing wall

D

retaining wall

Question 84

A small bridge having total length of 6 m or less between the faces of the abutment is known as

A

culvert

B

sluice

C

wing wall

D

coffer dam

Question 85

The granular material spread on the formation of a railway track for the sleeper to rest upon is known as

A

sleeper

B

rail

C

ballast

D

none of these

Question 86

Road alignment is

A

position occupied by the centre line of a road

B

position occupied by cross section

C

position occupied by the cross slope

D

none of these

Question 87

The vertical side member of a shutter frame is called

A

style

B

rail

C

reveal

D

post

Question 88

Couple roof is used for spans

A

3.5 m or less

B

3.5 m to 5 m

C

5 m to 6.5 m

D

6.5 m to 8 m

Question 89

In chain surveying a tie line is provided

A

to check the accuracy of survey

B

to take offsets

C

to avoid long offset from chain line

D

to increase number of chain lines

Question 90

Two contour lines having the same elevation

A

cannot cross each other

B

can cross each other

C

cannot unite together

D

can unite together

Question 91

For most economical rectangular section of a channel the depth is kept

A

one fourth of the width

B

three times the hydraulic radius

C

half the width

D

hydraulic mean depth

Question 92

If H is the depth of water retained by a vertical wall, the height of centre of pressure above the bottom is

A

H/3

B

H/2

C

H/5

D

H

Question 93

Absolute humidity in air

A

decreases at higher altitudes

B

increases at higher altitudes

C

remains constant

D

none of these

Question 94

Dicken"s formula for high flood estimate is useful only for the catchment in

A

Southern India

B

Northern India

C

Eastern India

D

Western India

Question 95

The detention period for plain sedimentation water tank is usually

A

4 to 8 hours

B

8 to 16 hours

C

16 to 24 hours

D

24 to 36 hours

Question 96

The soil which contain finest grain particles

A

coarse sand

B

fine sand

C

silt

D

clay

Question 97

Reynold"s number is the ratio of inertia force to

A

viscous force

B

gravity force

C

surface tension

D

friction

Question 98

The theodolite is an instrument for measuring

A

horizontal angles only

B

vertical angles only

C

linear measurement

D

horizontal and vertical angle

Question 99

The anti-siphonage pipe is not required in

A

one pipe system

B

two pipe system

C

single stack system

D

none of these

Question 100

The construction of a temporary structure required to support an unsafe structure is called

A

underpinning

B

scaffolding

C

shoring

D

none of these

101/2021 - Overseer Gr.II/Gr I (civil), Drafts-man Gr.II/Gr I