Previous Year Questions
92 questions — organised by subject with solutions and explanations.
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In the context of construction project management, which of the following statements is/are true:
Consider the following statements (P) and (Q): (P): Fly ash and ground granulated blast furnace slag can be used as mineral admixtures in concrete. (Q): As per IS 456:2000, the minimum moist curing pe
In the context of construction materials, which of the following statements is/are CORRECT ?
The figure shows a network diagram for a construction project. The activities A, B, C, D, E, and F are represented by arrows and their durations are in the figure. The total float available for the ac
Identify the FALSE statement from the following options:
In the context of the effect of drainage density on the run-off generation and the hydrograph at the catchment outlet, all other factors remaining the same, pick one or more CORRECT statement(s) from
The mean rainfall over a catchment has to be estimated. The data for four rain gauges located in and around the catchment is listed in the table. Which one of the following statements is correct:
The peak of flood hydrograph due to a 3-hour duration storm in a catchment is 180 . The total rainfall depth is 6.6 cm. It can be assumed that the average infiltration loss is 0.2 cm/h. There are no o
A water resources project with an expected life of 25 years has to be designed for an acceptable risk of against a design flood. The return period for the design flood (in years) is _________ (rounded
To derive the total flood hydrograph at a catchment outlet from an isolated storm, the order in which the following methods are applied, from the first method to the last method, is P. Obtaining the h
A hydrocarbon is burnt in air . The stoichiometric fuel to air mass ratio for this process is Note: Atomic Weight: C(12), H(1) Effective Molecular Weight: Air(28.8) Ignore any conversion of in air to
A compound has a general formula and molecular weight 187. A 935 mg/l solution of the compound is prepared in distilled deionized water. The Total Organic Carbon (TOC) is measured as 360 mg/l (as C).
A facultative pond system is employed for wastewater treatment. Which of the following statements is/are true:
The analyses results of a water sample are given below. The non-carbonate hardness of the water (in mg/L) as is ______ (in integer). ; Other anions were not analysed.
The bacteria mainly responsible for crown corrosion in a sewer is ______.
Aeration is employed as a treatment option for the removal of several pollutants from contaminated water. Identify the pollutant(s), where aeration is employed as a part of their removal:
A settling chamber is used for the removal of discrete particulate matter from air with the following conditions: Horizontal velocity of air = Temperature of air stream = Specific gravity of particle
A community generates 1 million litres/day (MLD) of wastewater. This wastewater is treated using an activated sludge process (ASP). The working volume of the aeration tank of the ASP is , and the biom
and salts are added to 1 litre of distilled deionized water and mixed until completely dissolved. Total Dissolved Solids (TDS) concentration is , and Total Hardness (TH) is (as ). The amounts of and a
Identify the treatment technology/technologies NOT recommended for highly biodegradable organic solid wastes.
A 60 cm diameter well completely penetrates a confined aquifer of permeability . The length of the strainer (spanning the entire thickness of the aquifer) is 10 m. The drawdown at the well under stead
Organic fraction of municipal solid waste (OFMSW) with bulk density of and water content of is mixed with municipal sludge of bulk density and water content of , such that the water content of the mix
Fecal Coliform (FC) concentration in river water was measured as . The FC concentration after the conventional water treatment, but before chlorination, was measured as . The 'Log Kill' (inactivation)
The Surface Overflow Rate (SOR) in a rectangular sedimentation tank is . Minimum diameters of spherical inorganic and organic particles expected to be completely removed in this tank are calculated. A
Free residual chlorine concentration in water was measured to be (as ). The pH of water is 8.5. By using the chemical equation given below, the concentration (in ) in water is ________________ (round
The drag force, , on a sphere due to a fluid flowing past the sphere is a function of viscosity, , the mass density, , the velocity of flow, , and the diameter of the sphere, . Pick the relevant (one
Consider flow in a long and very wide rectangular open channel. Width of the channel can be considered as infinity compared to the depth of flow. Uniform flow depth is 1.0 m. The bed slope of the chan
For a flowing fluid, a dimensionless combination of velocity ( ), length scale ( ), and acceleration due to gravity ( ) would be
The shaft of a 6 m wide gate in the figure will fail at a moment of 3924 kN.m about the hinge P. The maximum value of water depth (in m) that the gate can hold is __________ (round off to the nearest
A hydraulic jump occurs in an open channel when the slope of the channel changes from ______.
Consider steady flow of water in the series pipe system shown below, with specified discharge. The diameters of Pipes A and B are 2 m and 1 m, respectively. The lengths of Pipes A and B are 100 m and
A 5.0 m wide rectangular channel carries a discharge of at a depth of 1.5 m under uniform flow. To produce critical flow conditions without aflecting the upstream conditions, the channel bottom elevat
A hydraulic jump is formed in a 5 m wide rectangular channel, which has a horizontal bed and is carrying a discharge of . The depth of water upstream of the jump is 0.5 m . The power dissipated by the
Consider a velocity vector, in coordinates given below. Pick one or more CORRECT statement(s) from the choices given below.
For the Bernoulli's equation to be applicable in a fluid flow situation, which of the following conditions is/are to be satisfied:
If the quadrantal bearing of a line is , then the whole circle bearing of the line is
If the horizontal distance between a staff point and the point of observation is , the error due to the curvature of earth is proportional to
A surveyor measured the distance between two points on the plan drawn to a scale of and the result was 468 m. Later, it was discovered that the scale used was . The true distance between the points (i
In levelling between two points A and B on the opposite banks of a river, the readings are taken by setting the instrument both at and , as shown in the table. It the RL of A is 150.000 m, the RL of B
The results of a consolidated drained triaxial test on a normally consolidated clay are shown in the figure. The angle of internal friction is
A clayey soil has a moisture content of , a specific gravity of soil solids of 2.74 , and a degree of saturation of . The soil soaks up water during a rain event, and the degree of saturation increase
Which of the following statements is/are INCORRECT ?
From a flow-net diagram drawn under a concrete dam, following information are obtained: (i) The head difference between upstream and downstream side of the dam is . (ii) The total number of equipotent
A single pile with 450 mm diameter has been driven into a homogeneous clay layer, which has an undrained cohesion ( ) of 20 kPa and unit weight of . The ground water table is found to be at the surfac
The most suitable test for measuring the permeability of clayey soils in the laboratory is ______.
In the context of shear strength of soil, which of the following statements is/are CORRECT?
A group pile, with each pile long and in diameter, is installed in a square pattern in a clayey soil, as shown in the figure. The average unconfined compressive strength of the soil is , and the adhes
A designer used plate load test to obtain the value of the bearing capacity factor . A circular plate of diameter was placed on the surface of a dry sand layer extending very deep beneath the ground.
A 6 m thick clay stratum has drainage at both its top and bottom surface due to the presence of sand strata. The time to complete 50% consolidation is 2 years. The coefficient of volume change ( ) is
Two soils of permeabilities and are placed in a horizontal flow apparatus, as shown in the figure. For Soil , and ; for Soil , and . The cross sectional area of the horizontal pipe is , and the head d
The bank of a canal has the profile shown in the figure. The material is a homogeneous clay with a bulk unit weight of , undrained cohesion of and it is fully saturated ( ). For the trial slip circle
A square footing constructed in clay is subjected to a vertical load of 2500 kN at its centre. The base of the footing is 2 m below the ground surface, as shown in the figure. The footing is made of 2
A cut slope is made in a silty clay soil for a new road project, as shown in the figure. The locations of ground water table (GWT) and potential failure surface are shown in the figure. After the cut
The standard plasticity chart for the classification of a fine-grained soil is shown in the figure. As per the Indian standard soil classification system, X represents
For a partially saturated soil deposit at a construction site, water content (w) is 15%, degree of saturation (S) is 67%, void ratio (e) is 0.6 and specific gravity of solids in the soil ( ) is 2.67.
In an oedometer apparatus a specimen of fully saturated clay has been consolidated under a vertical pressure of 100 kPa and is at equilibrium state. Immediately on increasing the vertical pressure to
Pick one or more CORRECT statement(s) from the choices given below, in the context of upstream and downstream cut-offs provided below the concrete apron of weirs / barrages constructed across alluvial
Lacey's regime equations, followed in India for making scour calculations while designing hydraulic structures across alluvial channels, are given below. Regarding these equations, which of the follow
A symmetrical trapezoidal canal is 100 km long. The bottom width is 10 m and the side slope is 1 Horizontal : 1 Vertical. The average flow depth in the canal is 2.5 m throughout the month of April. Th
Consider a reinforced concrete beam section of 350 mm width and 600 mm depth. The beam is reinforced with the tension steel of area at an effective cover of 40 mm. Consider M20 concrete and Fe415 stee
If the weights retained on the , and sieves are , , and , respectively, of the total weight of an aggregate sample, then the fineness modulus of the sample is _________ (rounded off to 2 decimal place
As per IS 456:2000 provisions for two-way slabs with continuous edges, the longitudinal steel reinforcement to be provided in the edge strip is based on
Consider a reinforced concrete beam section of 300 mm width and 700 mm depth. The beam is reinforced with the tension steel of area at an effective cover of 50 mm . Concrete in the tension zone is ass
A reinforced concrete beam has a support section with width of 300 mm and effective depth of 500 mm. The support section is reinforced with 3 bars of 20 mm diameter at the tension side. Two-legged ver
The design shear strength of a reinforced concrete rectangular beam with a width of and an effective depth of , is . The torsional moment capacity of the section (in kN.m) under pure torsion, as per I
For the beam and loading shown in the figure, the second derivative of the deflection curve of the beam at the mid-point of is given by . The value of is _________ (rounded off to the nearest integer)
Let the state of stress at a point in a body be the difference of two plane states of stress shown in the figure. Consider all the possible planes perpendicular to the x-y plane and passing through th
Consider the beam given in the figure. Which of the following statements is/ are correct:
Consider the beam section shown in the figure, with indicating the depth of neutral axis (NA). The section is only subjected to an increasing bending moment. It is given that , when the section has no
Consider the built-up column made of two I-sections as shown in the figure, with each batten plate bolted to a component I-section of the column through 6 black bolts. Each connection of the batten pl
A circular tube of thickness 10 mm and diameter 250 mm is welded to a flat plate using 5 mm fillet weld along the circumference. Assume Fe410 steel and shop welding. As per IS 800:2007, the torque tha
A steel beam supported by three parallel pin-jointed steel rods is shown in the figure. The moment of inertia of the beam is . Take modulus of elasticity of steel as . The beam is subjected to a unifo
Consider the frame shown in the figure under the loading of couples at the joints and . Considering only the effects of flexural deformations, which of the following statements is/are true:
In the rigid-jointed frame shown in the figure, the distribution factor of the member is closest to
In the pin-jointed truss shown in the figure, the members that carry zero force are identified. Which of the following options is/are zero-force members?
Consider the pin-jointed truss shown in the figure. Influence line is drawn for the axial force in the member G-L when a unit load travels on the bottom chord of the truss. Identify the CORRECT influe
The figure shows a propped cantilever with uniform flexural rigidity (in ) and subjected to a moment (in ). Consider forces and displacements in the upward direction as positive. Find the upward react
The point where the road alignment changes from a tangent to a curve is known as ______
During determination of the bulk specific gravity of compacted bituminous specimen, the mass in air of the specimen is 1260 at and volume is . The density of water is . The theoretical maximum specifi
The free flow speed of a highway is 100 km/h and its capacity is 4000 vehicle/h. Assume speed-density relation is linear. For a traffic volume of 2000 vehicle/h, choose all the possible speeds (in km/
If the Fore Bearing of the lines and are and , respectively, then the interior angle (in degrees) is ______ (round off to the nearest integer).
Road and Road are joined by a circular horizontal curve of radius 200 m as shown in the figure. Road and Road are tangential to the curve at the points and , respectively. Had the curve not been there
In the context of testing bitumen, which one of the following statements is FALSE:
After applying the correction for elevation and temperature, the runway length is 700 m. The corrected runway length (in m) for an effective gradient of 1% is ______ (round off to the nearest integer)
Which of the following statements is/are INCORRECT?
A one-way, single lane road has traffic that consists of trucks and cars. The speed of trucks (in kmh) is a uniform random variable on the interval ( 30,60 ), and the speed of cars (in kmh) is a unfor
On a two-lane highway, a horizontal curve of radius is provided. The design speed is . If the longest wheelbase of the vehicle expected on this highway is , then the extra widening required (in m) is
All the vehicles that come during a particular peak hour come during a 10-minute period within this hour. The 15-minute peak hour factor for this peak hour is
Match the following in Column I with Column II.
The maximum degree of the curve that can be used for railways in a mountainous region is
The speed-density relation on a one-way, single lane road is shown in the figure, where speed is in hour and density is in vehicles/km. The maximum flow (in vehicles/hour) on this road is
The recommended minimum traffic growth rate and design period considered for structural design of flexible pavements for national highways in India as per IRC 37:2018 is ______ percentage and ______ y