Previous Year Questions
73 questions — organised by subject with solutions and explanations.
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The plan area of a reservoir is 1 . The water level in the reservoir is observed to decline by 20 cm in certain period. During this period the reservoir receives a surface inflow of 10 hectare-meters,
Match the following:
While applying the Rational formula for computing the design discharge, the rainfall duration is stipulated as the time of concentration because
An average rainfall of 16 cm occurs over a catchment during a period of 12 hours with a uniform intensity. The unit hydrograph (unit depth = 1cm, duration = 6 hours) of the catchment rises linearly fr
The vertical hydraulic conductivity of the top soil at certain stage is 0.2 cm/hr. A storm of intensity 0.5 cm/hr occurs over the soil for an indefinite period. Assuming the surfaces drainage to be ad
From amongst the following sewage treatment options, largest land requirements for a given discharge will be needed for
Settling test on a sample drawn from Aeration Tank liquor of ASP ( MLSS = 2800 mg/L) was carried out with 1 litre sample. The test yielded a settled volume of 200 mL. The value of Sludge Volume Index
Water is pumped from a well tapping an unconfined aquifer at a certain discharge rate and the steady state draw down (X) in an observation well is monitored. Subsequently, the pumping discharge is dou
Which of the following sewage treatment methods has inherent problems of odour, ponding and fly nuisance ?
An ideal horizontal flow settling basing is 3 m deep having surface area 900 . Water flows at the rate of 8000 , at water temperature 20 C (m= kg/m.s and ). Assuming Stoke's law to be valid, the propo
Match Group-I (Type of water impurity) with Group-II (Method of treatment)
A water treatment plant treating 10 MLD of water requires 20 mg/L of filter Alum, . The water has 6 mg/L of alkalinity as (Al = 26.97, S = 32, O = 16, H = 1, Ca = 40 and C = 12). Quantity of Quick Lim
Match Group-I (Characteristics of sewage discharged into inland waters ) with Group-II (Allowable limit, mg/L).
Results of a water sample analysis are as follows : (milliequivalent weight of =50 mg/meq). Hardness of the water sample in mg/L as is
Zero hardness of water is achieved by
The results of analysis of raw water sample are given below : Turbidity : 5 mg/L pH : 7.4 Fluorides : 2.5 mg/L Total Hardness : 300 mg/L Iron : 3.0 mg/L MPN : 50 per 100 mL From the data given above,
A pipeline (diameter 0.3 m, length 3 km) carries water form point P to point R (see figure). The piezometric heads at P and R are to be maintained at 100 m and 80 m, respectively. To increase the disc
A horizontal jet strikes a frictionless vertical plate (the plan view is shown in the figure). It is then divided into two parts, as shown in the figure. If the impact loss is neglected, what is the v
Two pipelines, one carrying oil (mass density 900 kg/ ) and the other water, are connected to a manometer as shown in figure. By what amount the pressure in the water pipe should be increased so that
For a two-dimensional irrotational flow, the velocity potential defined as . Which of the following is a possible stream function, for this flow ?
A very wide rectangular channel carries a discharge of 8 per m width. The channel has a bed slope of 0.004 and Manning's roughness coefficient, n = 0.015. At a certain section of the channel, the flow
A solid sphere (diameter 6 mm) is rising through oil (mass density 900 , dynamic viscosity 0.7 kg/ms) at a constant velocity of 1 cm/s. What is the specific weight of the material form which the spher
A hydraulic jump takes place in a triangular channel of vertex angle 90 , as shown in figure. The discharge is 1 and the pre-jump depth is 0.5 m. What will be the post-jump depth ? (Take g = 981 )
A flat plate is kept in an infinite fluid medium. The fluid has a uniform free-stream velocity parallel to the plate. For the laminar boundary layer formed on the plate, pick the correct option matchi
A laboratory model of a river is built to a geometric scale of 1:100. The fluid used in the model is oil of mass density 900 kg/ . The highest flood in the river is 10,000 /s. The corresponding discha
Compaction of an embankment is carried out in 500 mm thick layers. The rammer used for compaction has a foot area of 0.05 and the energy imparted in every drop of rammer is 400 Nm. Assuming 50% more e
A masonry dam is founded on previous sand having porosity equal to 45% and specific gravity of sand particles is 2.65. For a desired factor of safety of 3 against sand boiling, the maximum permissible
Figure shows the geometry of a strip footing supporting the load bearing walls of a three storied building and the properties of clay layer. If the elastic modulus and the Poisson's ratio of the clay
A double draining clay layer, 6 m thick, settles by 30 mm in three years under influence of certain loads. Its final consolidation settlement has been estimated to be 120 mm. If a thin layer of sand h
At a reclamation site for which the soil strata is shown in figure, a 3 m thick layer of a fill material is to be laid instantaneously on the top surface. If the coefficient of volume compressibility,
A braced cut, 5 m wide and 7.5 m deep is proposed in a cohesionless soil deposit having effective cohesion c'=0 and effective friction angle, . The first row of struts is to be installed at a depth of
In a plate load test conducted on cohesion less soil, a 600 mm square test plate settles by 15 mm under a load intensity of 0.2 . All conditions remaining the same, settlement of a 1 m square footing
A granular soil possesses saturated density of 20 . Its effective angle of internal friction is 35 degrees. If the desired factor of safety is 1.5, the safe angle of slope for this soil, when seepage
A canal having side slopes 1:1 is proposed to be constructed in a cohesive soil to a depth of 10 m below the ground surface. The soil properties are: , =12kPa, e=1.0, =2.65. If there is a sudden draw
For the pile group shown in the figure, the settlement of pile group, in a normally consolidated clay stratum having properties as shown in the figure, will be
A 25 kN point load acts on the surface of an infinite elastic medium. The vertical pressure intensity in at a point 6.0 m below and 4.0 m away from the load will be
Match the items of List-I with List-II and select the correct answer.
For the soil strata shown in figure, the water tables is lowered by drainage by 2 m and if the top 2 m thick silty sand stratum remains saturated by capillary action even after lowering of water table
Match the List-I (Boring methods) with List-II (Field conditions) and select the correct answer.
The moisture content of soil in the root zone of an agricultural crop at certain stage is found to be 0.05. The field capacity of the soil is 0.15. The root zone depth is 1.1 m. The consumptive use of
The total irrigation depth of water, required by a certain crop in its entire growing period (150 days), is 25.92 cm. The culturable command area for a distributary channel is 100,000 hectares. The di
While designing a hydraulic structure, the piezometric head at bottom of the floor is computed as 10 m. The datum is 3m below floor bottom. The assured standing water depth above the floor is 2 m. The
Top ring beam of an Intze tank carries a hoop tension of 120 kN. The beam cross-section is 250 mm wide and 400 mm deep and it is reinforced with 4 bars of 20 mm diameter of Fe-415 grade. Molular ratio
A concrete column carries an axial load of 450 kN and a bending moment of 60 kNm at its base. An isolated footing of size 2mx3m, with 3m side along the plane of the bending moment, is provided under t
A reinforced concrete beam, size 200 mm wide and 300 mm deep overall is simply supported over a span of 3 m. It is subjected to two point loads P of equal magnitude placed at middle third points. The
The effective length of a column in a reinforced concrete building frame, as per IS:456-2000, is independent of the
The working stress method of design specifies the value of modular ratio, m=280/( 3 ), where is the allowable stress in bending compression in concrete. To what extent does the above value of 'm' make
Maximum strains in an extreme fibre in concrete and in the tension reinforcement (Fe-415 grade and Es= 200 ) in a balanced section at limit state of flexure are respectively
Group-I contain some properties of concrete/cement and Group-II contain list of some tests on concrete/cement. Match the property with the corresponding test.
The state of two dimensional stresses acting on a concrete lamina consists of a direct tensile stress, =1.5 , and shear stress, = 1.20 , which cause cracking of concrete. Then the tensile strength of
Group-I shows different loads acting on a beam and Group-II shows different bending moment distributions. Match the load with the corresponding bending moment diagram.
A long structural column (length= L) with both ends hinged is acted upon by an axial compressive load, P. The differential equation governing the bending of column is given by : Where y is the structu
A "H" shaped frame of uniform flexural rigidity EI is loaded as shown in the figure. The relative outward displacement between points K and O is
A bar of varying square cross-section is loaded symmetrically as shown in the figure. Loads shown are placed on one of the axes of symmetry of cross-section. Ignoring self weight, the maximum tensile
A curved member with a straight vertical leg is carrying a vertical load at Z , as shown in the figure. The stress resultants in the XY segment are
A simply supported beam of uniform rectangular cross-section of width b and depth h is subjected to linear temperature gradient 0 at the top and T at the bottom, as shown in the figure. The coefficien
A truss tie consisting of 2 ISA 75x75x8 mm carries a pull of 150 kN. At ends the two angels are connected, one each on either side of a 10 mm thick gusset plate, by 18 mm diameter rivets arranged in o
Group-I contains some elements in design of a simply supported plate girder and Group-II give some qualitative locations on the girder. Match the items of two lists as per good design practice and rel
In the design of lacing system for a built-up steel column, the maximum allowable slenderness ratio of a lacing bar is
A steel portal frame has dimensions, plastic moment capacities and applied loads as shown in the figure. The vertical load is always twice of the horizontal load. The collapse load P required for the
Which of the following elements of a pitched roof industrial steel building primarily resists lateral load parallel to the ridge ?
In a redundant joint model, three bar members are pin connected at Q as shown in the figure. Under some load placed at Q, the elongation of the members MQ and OQ are found to be 48 mm and 35 mm respec
A truss, as shown in the figure, is carrying 180 kN load at node . The force in the diagonal member will be
A beam PQRS is 18 m long and is simply supported at points Q and R, 10 m apart. Overhangs PQ and RS are 3 m and 5 m respectively. A train of two point loads of 150 kN and 100kN, 5 m apart, crosses thi
Muller Breslau's principle in structural analysis is used for
The stiffness K of a beam deflecting in a symmetric mode, as shown in the figure, is
The plate load test conducted with a 75 cm diameter plat on soil subgrade yielded a deflection of 2.5 mm under a stress of 800 . The modulus of elasticity of the subgrade soil, in is
The speed and delay studies on a defined section of highway are conducted by
Group-I below gives a list of physical properties of aggregates which should be determined to judge their suitability in road construction. Group-II gives a list of laboratory tests which are conducte
In the Marshall method of mix design, the coarse aggregates, fine aggregates, filler and bitumen, having respective specific gravities of 2.62, 2.72, 2.70 and 1.02 are mixed in the ratio of 55, 34.6,
Temperature stresses in concrete pavements may cause the slab to crack. If a slab cools uniformly then the crack will develop at the which of the following locations of the slab ?
The design speed for a National Highway is 100 kmph. If the maximum permissible superelevation is 0.10 and the coefficient of lateral friction is 0.15, the ruling minimum radius of horizontal curve on
A traffic stream in a particular direction of a two lane roads is moving with a constant speed of 50 kmph, with an average headway of 2.52 seconds . The longitudinal distance between the two consecuti