Q.1

On an immersed body in a flowing fluid the lift force is :

  • due to buoyant force
  • always in the opposite direction to gravity
  • due to Wake phenomenon
  • the dynamic fluid-force component normal to approach velocity
Q.2

The total active thrust on a vertical wallhigh retaining a horizontal sand backfill (unit weight γt =kN/m3, angle of shearing resistance φ' = 30°) when the water table is at the bottom of the wall, will be:

  • 30 kN/m
  • 35 kN/m
  • 4 kN/m
  • 45 kN/m
Q.3

In a section, shear centre is a point through which, if the resultant load passes, the section will not be subjected to any

  • Bending
  • Tension
  • Compression
  • Torsion
Q.4

For the determination of earth pressure, Coulomb's wedge theory assumes that:

  • the back of wall is smooth and vertical
  • the soil is non-homogeneous and anisotropic
  • the slip surface is circular
  • the wall surface is rough
Q.5

The two criteria for the determination of allowable bearing capacity of a foundation are

  • tensile failure and compression failure.
  • tensile failure and settlement.
  • bond failure and shear failure.
  • shear failure and settlement.
Q.6

A point load ofkN is applied on the surface of thick layer of clay. Using Boussinesq's elastic analysis, the estimated vertical stress (σv) at a depth of 2 m and a radial distance of 1.0 m from the point of application of the load, is :

  • 47.5 kPa
  • 47.6 kPa
  • 47.7 kPa
  • 47.8 kPa
Q.7

Which one of the following conditions, both elastic and plastic methods of analysis of indeterminate structures have to satisfy ?

  • yield condition
  • mechanism condition
  • equilibrium
  • compatibility of deformation
Q.8

The total length (in km) of the existing National Highways in India is in the range of

  • 15, 000 to 25, 000
  • 25, 000 to 35, 000
  • 35, 000 to 45, 000
  • 45, 000 to 55, 000
Q.9

The time for a clay layer to achieveconsolidation isyears. The time required to achieveconsolidation; if the layer were twice as thick, 3 times forr permeable and 4 times more compressible would be :

  • 70 years
  • 75 years
  • 80 years
  • 85 years
Q.10

Which one of the following set of values give the minimum clear cover (in mm) for the main reinforcements in the slab, beam, column and footing, respectively, according to IS : 456-?

  • 20, 25, 30, 75
  • 5, 15, 25, 50
  • 15, 25, 40, 75
  • none of the above
Q.11

The lateral ties in a reinforced concrete rectangular column uncle: axial compression are used to :

  • avoid the buckling of the longitudinal steel under compression
  • provide adequate shear capacity
  • provide adequate confinement to concrete
  • reduce the axial deformation of the column
Q.12

The liquid limit (LL), plastic limit (PL) and shrinkage limit (SL) of a cohesive soil satisfy the relation

  • LL > PL < SL
  • LL > PL > SL
  • LL < PL < SL
  • LL < PL > SL
Q.13

A deep cut of 7 m has to be made in a clay with unit weightkN/m3 and a cohesion ofkN/m2. What will be the factor of safety if one has to have a slope angle of? Stability number is given to be 0.(from Taylor's chart) for a depth factor of 3.

  • 0.80
  • 1.1
  • 1.25
  • 1.0
Q.14

The problem of lateral buckling can arise only in those steel beams which have

  • Moment of inertia about the bending axis larger than the other
  • Moment of inertia about the bending axis smaller than the other
  • Fully supported compression flange
  • None of the above.
Q.15

A pre-tensioned concrete member of sectionmm xmm contains tendons of areamm2 at centre of gravity of the section. The prestress in the tendons isN/mm2. Assuming modular ratio asthe stress (N/mm2) in concrete is

  • 11
  • 9
  • 7
  • 5
Q.16

Generally (fatigue life of welded steel structure/fatigue life of riveted steel structure) ratio is,

  • smaller than 1
  • equal to 1
  • greater than 1
  • greater than 2.1
Q.17

Alligator or map cracking is the common type of failure in

  • concrete pavements
  • bituminous surfacing
  • gravel roads
  • WBM construction
Q.18

The dimensions for the flexural rigidity of a beam element in mass (M), length (L) and time (T) is given by

  • MT-2
  • ML3T-2
  • ML-1T-2
  • M-1T2
Q.19

The plan of a survey plotted to a scale ofm to 1 cm is reduced in such a way that a line originallycm long now measures 9 cm. The area of the reduced plan is measured ascm2. The actual (m2) of the survey is

  • 10000
  • 6561
  • 1000
  • 656
Q.20

A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q. A weight W is dropped vertically from a height h(< L) on to the flange. The axial stress in the rod can be reduced by

  • increasing the length of the rod
  • decreasing the length of the rod
  • decreasing the area of cross-section of the rod
  • increasing the modulus of elasticity of the material
Q.21

If soil is dried beyond its shrinkage limit, it will show :

  • Large volume change
  • Moderate volume change
  • Low volume change
  • No volume change
Q.22

Two flow patterns are represented by their stream functions ψ1 and ψ2 as given below:
ψ1 = x2 + y2, ψ2 = 2xy
If these two patterns are superimposed on one another, the resulting streamline pattern can be represented by one of the following :

  • A family of parallel straight lines
  • A family of circles
  • A family of parabolas
  • A family of hyperbolas
Q.23

The specific gravity of paving bitumen as per IS:73-lies between

  • 1.10 and 1.06
  • 1.06 and 1.02
  • 1.02 and 0.97
  • 0.97 and 0.92
Q.24

In highway pavements emulsions are mainly used in :

  • surface dressing
  • patching and maintenance operation
  • bitumen macadam
  • asphaltic concrete
Q.25

The total thickness of pavement by CBR method depends on the CBR value of

  • base course
  • surface course
  • subgrade
  • all layers
Q.26

An inverted siphon is a

  • device for distributing septic tank effluent to a soil absorption system
  • device for preventing overflow from elevated water storage tank
  • device for preventing crown corrosion of sewer
  • section of sewer which is dropped below the hydraulic grade line in order to avoid an obstacle.
Q.27

Bituminous materials are used in highway construction primarily because of their :

  • cementing and water-proofing properties
  • load bearing capacity
  • high specific gravity
  • black colour which facilitates road markings
Q.28

A river 5 m deep consists of a sand bed with saturated unit weight ofkN/m3 . vw = 9.kN/m3. The effective vertical stress at 5 m from the top of sand bed is

  • 41 kN/m2
  • 51 kN/m2
  • 55 kN/m2
  • 53 kN/m2
Q.29

Delta (Δ) in cm. Duty (D) in hectare Cumec and Base period (B) in days are related as

  • Δ = 864 B/D
  • B = 864 D/Δ
  • B = 864 Δ/D
  • D = 8.64 B/Δ
Q.30

Cohesion in soil

  • decreases active pressure and increases passive resistance
  • decreases both active pressure and passive resistance
  • increases the active pressure and decreases the passive resistance
  • increases both active pressure and passive resistance.
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