Previous Year Questions
41 questions — organised by subject with solutions and explanations.
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The ratio of actual evapo-transpiration to potential evapo-transpiration is in the range
The top width and the depth of flow in a triangular channel were measured as 4 m and 1 m, respectively. The measured velocities on the centre line at the water surface, 0.2 m and 0.8 m below the surfa
Group I contains parameters and Group II lists methods/instruments. The CORRECT match of Group I with Group II is
The drainage area of a watershed is 50 . The index is 0.5 cm/hour and the base flow at the outlet is 10 /s. One hour unit hydrograph (unit depth = 1 cm) of the watershed is triangular in shape with a
A sample of domestic sewage is digested with silver sulphate, sulphuric acid, potassium dichromate and mercuric sulphate in chemical oxygen demand (COD) test. The digested sample is then titrated with
A town is required to treat 4.2 /min of raw water for daily domestic supply. Flocculating particles are to be produced by chemical coagulation. A column analysis indicated that an overflow rate of 0.2
An activated sludge system (sketched below) is operating at equilibrium with the following information. Wastewater related data:flow rate = 500 /hour, influent BOD = 150 mg/L, effluent BOD = 10 mg/L.
A water sample has a pH of 9.25. The concentration of hydroxyl ions in the water sample is
Assertion [a]: At a manhole, the crown of the outgoing sewer should not be higher than the crown of the incoming sewer. Reason [r]: Transition from a larger diameter incoming sewer to a smaller diamet
A rectangular open channel of width 5.0 m is carrying a discharge of 100 /s. The Froude number of the flow is 0.8. The depth of flow (in m) in the channel is
The circular water pipes shown in the sketch are flowing full. The velocity of flow (in m/s) in the branch pipe "R" is
A trapezoidal channel is 10.0 m wide at the base and has a side slope of 4 horizontal to 3 vertical. The bed slope is 0.002. The channel is lined with smooth concrete (Manning's n = 0.012). The hydrau
The horizontal distance between two stations P and Q is 100 m. The vertical angles from P and Q to the top of a vertical tower at T are 3 and 5 above horizontal, respectively. The vertical angles from
Which of the following errors can be eliminated by reciprocal measurements in differential leveling? I Error due to earth's curvature II Error due to atmospheric refraction
Two soil specimens with identical geometric dimensions were subjected to falling head permeability tests in the laboratory under identical conditions. The fall of water head was measured after an iden
A layer of normally consolidated, saturated silty clay of 1 m thickness is subjected to one dimensional consolidation under a pressure increment of 20 kPa. The properties of the soil are: specific gra
The flow net around a sheet pile wall is shown in the sketch. The properties of the soil are: permeability coefficient = 0.09 m/day (isotropic), specific gravity = 2.70 and void ratio = 0.85. The shee
A smooth rigid retaining wall moves as shown in the sketch causing the backfill material to fail. The backfill material is homogeneous and isotropic, and obeys the Mohr-Coulomb failure criterion. The
The effective stress friction angle of a saturated, cohesionless soil is 38 . The ratio of shear stress to normal effective stress on the failure plane is
As per the Indian Standard soil classification system, a sample of silty clay with liquid limit of 40% and plasticity index of 28% is classified as
Two series of compaction tests were performed in the laboratory on an inorganic clayey soil employing two different levels of compaction energy per unit volume of soil. With regard to the above tests,
An embankment is to be constructed with a granular soil (bulk unit weight = 20 kN/ ) on a saturated clayey silt deposit (undrained shear strength = 25 kPa). Assuming undrained general shear failure an
Steady state seepage is taking place through a soil element at Q, 2 m below the ground surface immediately downstream of the toe of an earthen dam as shown in the sketch. The water level in a piezomet
Which one of the following is categorised as a long-term loss of prestress in a prestressed concrete member?
A concrete beam prestressed with a parabolic tendon is shown in the sketch. The eccentricity of the tendon is measured from the centroid of the cross-section. The applied prestressing force at service
As per IS 456:2000, in the Limit State Design of a flexural member, the strain in reinforcing bars under tension at ultimate state should not be less than
The cross-section at mid-span of a beam at the edge of a slab is shown in the sketch. A portion of the slab is considered as the effective flange width for the beam. The grades of concrete and reinfor
The ratio of the theoretical critical buckling load for a column with fixed ends to that of another column with the same dimensions and material, but with pinned ends, is equal to
A simply supported beam is subjected to a uniformly distributed load of intensity w per unit length, on half of the span from one end. The length of the span and the flexural stiffness are denoted as
If a small concrete cube is submerged deep in still water in such a way that the pressure exerted on all faces of the cube is p, then the maximum shear stress developed inside the cube is
The Poisson's ratio is defined as
The following statements are related to bending of beams: I The slope of the bending moment diagram is equal to the shear force. II The slope of the shear force diagram is equal to the load intensity.
The sketch shows a column with a pin at the base and rollers at the top. It is subjected to an axial force P and a moment M at mid-height. The reaction(s) at R is/are
A two-lane urban road with one-way traffic has a maximum capacity of 1800 vehicles/hour. Under the jam condition, the average length occupied by the vehicles is 5.0 m. The speed versus density relatio
Two bitumen samples "X" and "Y" have softening points 45 C and 60 C, respectively. Consider the following statements: I Viscosity of "X" will be higher than that of "Y" at the same temperature. II Pen
A pavement designer has arrived at a design traffic of 100 million standard axles for a newly developing national highway as per IRC:37 guidelines using the following data: design life = 15 years, com
Road roughness is measured using
The following data are related to a horizontal curved portion of a two-lane highway: length of curve = 200 m, radius of curve = 300 m and width of pavement = 7.5 m. In order to provide a stopping sigh
Two major roads with two lanes each are crossing in an urban area to form an un-controlled intersection. The number of conflict points when both roads are one-way is "X" and when both roads are two-wa