Q.1

A steel beam supporting loads from the floor slab as well as from wall is termed as

  • Stringer beam
  • Lintel beam
  • Spandrel beam
  • Header beam
Q.2

The centre of pressure of a liquid on a plane surface immersed vertically in a static body of liquid, always lies below the centroid of the surface area, because

  • in liquids the pressure acting is same in-all directions
  • there is no shear stress in liquids at rest
  • the liquid pressure is constant over depth
  • the liquid pressure increases linearly with depth
Q.3

Width of carriage way for a single lane is recommended to be

  • 7.5 m
  • 7.0 m
  • 3.75 m
  • 5.5 m
Q.4

Compaction by vibratory roller is the best method of compaction in case of

  • moist silty sand
  • well graded dry sand
  • clay of medium compressibility
  • silt of high compressibility
Q.5

Storage coefficient of a compressible confined aquifer is a function of

  • specific weight of water, thickness of the aquifer, compressibility of the aquifer and that of water
  • permeability, thickness and compressibility of aquifer and compressibility of water
  • transmissibility of the aquifer and compressibility of water
  • transmissibility of aquifer and specific yield of aquifer
Q.6

In a reinforced concrete beam-column, the increase in the flexural strength along with the increase in the axial strength occurs

  • beyond the elastic limit of the material
  • when the yield of the tension reinforcement governs the strength
  • when the crushing of the concrete in the compression zone governs the strength
  • never
Q.7

A linear relationship is observed between speed and density on a certain section of a highway. The free flow speed is observed to bekm per hour and the jam density is estimated asvehicles per km length. Based on the above relationship, the maximum flow expected on this section and the speed at the maximum flow will respectively be

  • 8000 vehicles per hour and 80 km per hour
  • 8000 vehicles per hour and 25 km per hour
  • 2000 vehicles per hour and 80 km per hour
  • 2000 vehicles per hour and 40 km per hour
Q.8

While deriving an expression for loss of head due to a sudden expansion in a pipe, in addition to the continuity and impulse-momentum equations, one of the following assumptions is made :

  • Head loss due to friction is equal to the head loss in eddying motion
  • The mean pressure in eddying fluid is equal to the downstream pressure
  • The mean pressure in eddying fluid is equal to the upstream pressure
  • Head lost in eddies is neglected
Q.9

The standard plate size in a plate bearing test for finding modulus of subgrade reaction (k) value is

  • 100 cm diameter.
  • 50 cm diameter.
  • 75 cm diameter.
  • 25 cm diameter.
Q.10

The sequent depth ratio of a hydraulic jump in a rectangular horizontal channel is 10.The Froude Number at the beginning of the jump is :

  • 5.64
  • 7.63
  • 8.05
  • 13.61
Q.11

The main constituents of gas generated during the anaerobic digestion of sewage sludge are :

  • carbon dioxide and methane
  • methane and ethane
  • carbon dioxide and carbon monoxide
  • carbon monoxide and nitrogen
Q.12

Mud pumping is commonly associated with

  • bituminous penetration mecadam construction
  • cement concrete pavement on granular subgrade
  • premixed bituminous construction
  • cement concrete pavement on clay sub-grade
Q.13

Biochemical oxygen demand (BOD) of waste water is a measure of

  • total concentration of a biochemicals
  • total concentration of organic matter
  • concentration of biodegradable organic matter
  • concentration of chemically oxidisable matter
Q.14

The penetration test for bitumen is conduced at a temperature of

  • 60°C
  • 37°C
  • 25°C
  • 50°C
Q.15

The unit weight of a soil at zero air voids depends on :

  • specific gravity
  • water content
  • unit weight of water
  • all the above
Q.16

For an anisotropic soil, permeabilities in x and y directions are kx and ky respectively in a two dimensional flow. The effective permeability keq for the soil is given by

  • kx + ky
  • kx/ky
  • (kx2 + ky2)1/2
  • (kxky)1/2
Q.17

The most commonly used sampler for obtaining a disturbed sample of the soil is

  • split spoon sampler
  • open drive sampler
  • piston sampler
  • thin wall shelby tube sampler
Q.18

The shape of the cross-section, which has the largest shape factor, is

  • rectangular
  • I-section
  • diamond
  • solid circular
Q.19

Factor of safety adopted by IS :-while arriving at the permissible stress in axial compression, is :

  • 2.00
  • 1.00
  • 1.67
  • 1.50
Q.20

The expression for the specific speed of a pump :

  • does not include the diameter of the impeller
  • yields larger values for radial pumps than for axial flow pump
  • is necessarily non dimensional
  • includes power as one of the variables
Q.21

The group efficiency of a pile group

  • will be always less than 100%.
  • will be always greater than 100%.
  • may be less than 100% or more than 100%.
  • will be more than 100% for pile groups in cohensionless soils and less than 100% for those in cohesive soils.
Q.22

The ratio of unconfined compressive strength of an undisturbed sample of soil to that of a remoulded sample, at the same water content, is known as :

  • activity
  • damping
  • plasticity
  • sensitivity
Q.23

Two samples of water A and B have pH values of 4.4 and 6.4 respectively. How many times more acidic sample A is than sample B ?

  • 0
  • 50
  • 100
  • 200
Q.24

The most important water quality parameter for domestic use of water is

  • carbonate hardness
  • non-carbonate hardness
  • coliform group of organisms
  • chlorides
Q.25

The BOD removal efficiency, in percentage, during primary treatmet under normal conditions is about

  • 65%
  • 85%
  • 30%
  • Zero
Q.26

Chemical oxygen Demand (COD) of a sample is always greater than Biochemical Oxygen Demand (BOD) since it represents :

  • biodegradable organic matter only
  • biodegradable and non-biodegradable organic matter
  • non-biodegradable organic matter
  • inorganic matter
Q.27

The unit of dynamic viscosity of a fluid is

  • m2/s
  • Ns/m2
  • Pa s/m2
  • kg s2/m2
Q.28

The temporary hardness of water, is caused by:

  • dissolved carbondioxide
  • bicarbonates and carbonates of calcium and magnesium
  • bicarbonates of sodium and potassium
  • carbonates of calucium and magnesium
Q.29

Well foundations are commonly used as foundations for the following structures :

  • Water tanks
  • Bridges
  • Buildings
  • Reciprocating machines
Q.30

The plan of stairs supported at each end by landings spanning parallel with risers is shown in the below figure. The effective span of staircase slab is

  • 3000 mm
  • 4600 mm
  • 4750 mm
  • 6400 mm
0 h : 0 m : 1 s