Q.1

Presence of excess nitrates in river water indicates :

  • recent pollution of water with sewage
  • past pollution of water with sewage
  • immediate pollution of water with sewage
  • no pollution of water with sewage
Q.2

The number of revolutions of a current meter inseconds were found to beandcorresponding to the velocities of 0.and 0.m/s respectively. What velocity (in m/s) would be indicated byrevolutions of that current meter in one minute ?

  • 0.42
  • 0.50
  • 0.60
  • 0.73
Q.3

One of the probable causes of rutting on flexible pavements is

  • excessive stripping of binder material from the wearing course
  • use of flaky aggregates in the wearing course
  • inadequate compaction of pavement layers
  • high wind speeds
Q.4

Both Reynolds and Froude numbers assume significance in one of following examples :

  • Motion of submarine at large depths
  • Motion of ship in deep seas
  • Cruising of a missile in air
  • Flow over spillways
Q.5

Stopping sight distance is the minimum distance available on a highway which is the

  • distance of sufficient length to stop the vehicle wihtout collision.
  • distance visible to a driver during night driving.
  • height of the object above the road surface.
  • distance equal to the height of the driver's eye above the road surface.
Q.6

Determine the correctness of otherwise of the following Assertion [A] and the Reason [R].

Assertion [A] : The crown of the outgoing larger diameter sewer is always matched with the crown of incoming smaller diameter sewer.

Reason [R] : It eliminates backing up of sewage in the incoming smaller diameter sewer.

  • Both [A] and [R] are true and [R] is the correct reason for [A]
  • Both [A] and [R] are true and [R] is not the correct reason for [A]
  • Both [A] and [R] are false
  • [A] is true but [R] is false
Q.7

The toughness index of clayey soils is given by

  • Plasticity index/Flow index
  • Liquid limit/Plastic limit
  • Liquidity index/Plastic limit
  • Plastic limit/Liquidity index
Q.8

Two footings, one circular and the other square, are founded on the surface of a purely cohesionless soil. The diameter of the circular footing is same as that of the side of the square footing. The ratio of their ultimate bearing capcities is

  • 3/4
  • 4/3
  • 1.0
  • 1.3
Q.9

A mild steel specimen is under uni-axial tensile stress. Young's modulus and yield stress for mild steel are 2 x 105 MPa andMPa respectively. The maximum amount of strain energy per unit volume that can be stored in this speciment without permanent set, is

  • 156 Nmm/mm3
  • 15.6 Nmm/mm3
  • 1.56 Nmm/mm3
  • 0.156 Nmm/mm3
Q.10

At highway stretches where the required overtaking sight distance cannot be provided, it is necessary to incorporate in such sections the following :

  • at least twice the stopping sight distance
  • half of the required overtaking sight distance
  • one third of the required overtaking sight distance
  • three times the stopping sight distance.
Q.11

A waste water sample diluted totimes with aeration water had an initial dissolved oxygen (DO) of 7.0 mg/l and after 5 days of incubation at 20°C, the DO was zero. The BOD of waste water is :

  • 700 mg/l
  • 100 mg/l
  • cannot be determined
  • 7mg/l
Q.12

A trickling filter is primarily a :

  • straining process to remove suspended solids from sewage
  • biological oxidation process to remove BOD from sewage
  • straining process to remove turbidity from water
  • straining process to remove bacteria from water
Q.13

The focal length of the object glass of a tacheometer ismm, the distance between the vertical axis of the tachometer and the optical centre of the object glass ismm and the spacing between the upper and lower line of the diaphragm axis is 4 mm. With the line of collima-tion perfectly horizontal, the staff intercepts are 1 m (top), 2 m (middle), and 3 m (bottom). The horizontal distance (m) between the staff and the instrument station is

  • 100.3
  • 103.0
  • 150.0
  • 153.0
Q.14

At highway stretches where the required overtaking sight distance cannot be provided, it is necessary to incorporate :

  • at least twice the stopping sight distance
  • half the required overtaking sight distance
  • one-third the required overtaking sight distance
  • three times the stopping sight distance
Q.15

Two steel plates each of widthmm and thicknessmm are connected with threemm diameter rivets placed in a zig-zag pattern. The pitch of the rivets ismm and gauge ismm. If the allowable tensile stress isMPa, the maximum tensile force that the joint can withstand is

  • 195.66 kN
  • 195.00 kN
  • 192.75 kN
  • 225.00 kN
Q.16

A lysimeter is used to measure :

  • infiltration
  • evaporation
  • evapotranspiration
  • radiation
Q.17

The basic assumption of plane sections normal to the neutral axis before bending, remaining plane and normal to the neutral axis after bending, leads to :

  • uniform strain over the beam cross section
  • uniform stress over the cross section
  • linearly varying strain over the cross section
  • stresses which are proportional to strains at all cross sections
Q.18

A direct shear test was conducted on a cohesionless soil (c =specimen under a normal stress ofkN/m2. The specimen failed at a shear stress ofkN/m2. The angle of internal friction of the soil (degrees) is

  • 26.6
  • 29.5
  • 30.0
  • 32.6
Q.19

A body moving through still water at 6 m/sec produces a water velocity of 4 m/sec at a point 1 m ahead. The difference in pressure between the nose and the point 1 m ahead would be

  • 2, 000 N/m2
  • 10, 000 N/m2
  • 19, 620 N/m2
  • 98, 100 N/m2
Q.20

An isochrone is a line on the basin map

  • Joining raingauge stations having equal rainfall-duration
  • Joining points having equal rainfall depth in a given time interval
  • Joining points having equal time of travel of surface runoff to the catchment outlet
  • Joining points which are at equal distance from the catchment outlet
Q.21

A pile of 0.m diameter and of lengthm is embedded in a deposit of clay. The un-drained strength parameters of the clay are cohesion =kN/m2 and the angle in internal friction =The skin friction capacity (kN) of the pile for an adhesion factor of 0.is

  • 671
  • 565
  • 283
  • 106
Q.22

A soil having particles of nearly the same size is known as

  • well graded
  • uniformly graded
  • poorly graded
  • gap graded
Q.23

The slope of the elastic curve at the free end of a cantilever beam of span L, and with fluxural rigidity EI, subjected to uniformly distributed load of intensity w is

  • wL3/6EI
  • wL3/3EI
  • wL4/8EI
  • wL3/2EI
Q.24

Allowable average shear stress in an un-stiffened web for beams made of steel of gradeN/mm2 is :

  • 250 N/mm2
  • 165 N/mm2
  • 150 N/mm2
  • 100 N/mm2
Q.25

The maximum shear stress in a solid shaft of circular cross-section having diameter d subjected to a torque T is τ. If the torque is increased by four times and the diameter of the shaft is increased by two times, the maximum shear stress in the shaft will be

  • 2τ
  • τ
  • τ/2
  • τ/4
Q.26

In IS :(the permissible compressive stress in column is based on :

  • Euler formula
  • Secant formula
  • Rankine-Gordan formula
  • Rankine-Merchant formula
Q.27

Negative skin friction occurs when :

  • an upward drag exists in the pile
  • the surrounding soil settles more than the pile
  • the pile passes continuously through a firm soil
  • the driving operation begins
Q.28

The order or the flexibility matrix for a structure is,

  • equal to the number of redundant forces
  • more than the number of redundant forces
  • less than the number of redundant forces
  • equal to the number of redundant forces plus three
Q.29

As per IS : 800-the maximum allowable slenderness ratio of compression members carrying forces resulting from dead load and superimposed load is

  • 180
  • 250
  • 300
  • 400
Q.30

Muskingum method for routing of flood

  • is used for routing floods through reservoirs
  • is a method of routing that uses continuity the momentum equations
  • is a hydrologic method of routing floods through streams
  • is one in which only energy equation is used
0 h : 0 m : 1 s