Previous Year Questions
92 questions — organised by subject with solutions and explanations.
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Group I given a list of test methods and test apparatus for evaluating some of the properties of ordinary Portland cement (OPC) and concrete. Group II gives the list of these properties. The correct m
Consider the following statements: P. Walls of one brick thick are measured in square meters. Q. Walls of one brick thick are measured in cubic meters. R. No deduction in the brickwork quantity is mad
Given that the scope of the construction work is well-defined with all its drawings, specifications, quantities and estimates, which one of the following types of contract would be most preferred?
The activity details of a project are given below: The estimated minimum time (in days) for the completion of the project will be________
For a construction project, the mean and standard deviation of the completion time are 200 days and 6.1 days, respectively. Assume normal distribution and use the value of standard normal deviate Z =
The ordinates of a 2-hour unit hydrograph for a catchment are given as The ordinate (in ) of a 4-hour unit hydrograph for this catchment at the time of 3 h would be ______
During a storm event in a certain period, the rainfall intensity is 3.5 cm/hour and the -index is 1.5 cm/hour. The intensity of effective rainfall (in cm/hour, up to one decimal place) for this period
A catchment is idealized as a 25 km x 25 km square. It has five rain gauges, one at each corner and one at the center, as shown in the figure. During a month, the precipitation at these gauges is meas
An effective rainfall of 2-hour duration produced a flood hydrograph peak of 200 . The flood hydrograph has a base flow of 20 . If the spatial average rainfall in the watershed for the duration of sto
The infiltration capacity of a soil follows the Horton's exponential model, . During and experiment, the initial infiltration capacity was observed to be 200 mm/h. After a long time, the infiltration
As per Noise Pollution (Regulation and Control) Rules 2000 of India, the day time noise limit for a residential zone, expressed in dB(A) , is
The most important type of species involved in the degradation of organic matter in the case of activated sludge process is
The wastewater form a city, containing a high concentration of biodegradable organics, is beingsteadily discharged into a flowing river at a location S. If the rate of aeration of the river water islo
Following observations have been made for the elevation and temperature to ascertain the stability of the atmosphere: The atmosphere is classified as
Which one of the following is NOT present in the acid rain?
For a given water sample, the ratio between and the ultimate BOD is 0.68. The value of the reaction rate constant k (on base e) (in up to two decimal places) is_____
The composition of a municipal solid waste sample is given below: The difference between the energy content of the waste sample calculated on dry basis and asdiscarded basis (in kJ/kg) would be
Two wastewater streams A and B, having an identical ultimate BOD are getting mixed to form the stream C. The temperature of the stream A is 20 C and the temperature of the stream C is 10 C. It is give
The analysis of a water sample produces the following results: The total hardness (in mg/L as ) of the water sample is _____
The wastewater having an organic concentration of 54 mg/l is flowing at a steady rate of 0.8 through a detention tank of dimensions . If the contents of the tankare well mixed and the decay constant i
The spherical grit particles, having a radius of 0.01mm and specific gravity of 3.0, need to beseparated in a settling chamber. It is given that the density of the liquid in the settling chamber the k
The equivalent sound power level (in dB) of the four sources with the noise levels of 60 dB, 69 dB, 70 dB and 79 dB is_______
A municipal corporation is required to treat 1000 of water. It is found that an overflow rate of 20 m/day will produce a satisfactory removal of the discrete suspended particles at a depth of 3 m. The
For a steady incompressible laminar flow between two infinite parallel stationary plates, the shear stress variation is
The figure shows a U-tube having a 5 mmx5 mm square cross-section filled with mercury (specific gravity = 13.6) up to a height of 20 cm in each limb (open to the atmosphere). If 5 of water is added to
A 1 m wide rectangular channel carries a discharge of 2 . The specific energy-depth diagram is prepared for the channel. It is observed in this diagram that corresponding to a particular specific ener
If a centrifugal pump has an impeller speed of N (in rpm), discharge Q (in ) and the total head H (in m), the expression for the specific speed of the pump is given by
Water is pumped at a steady uniform flow rate of 0.01 through a horizontal smooth circular pipe of 100 mm diameter. Given that the Reynolds number is 800 and g is 9.81 , the head loss (in meters, up t
At two point 1 and 2 in a pipeline the velocities are V and 2V, respectively. Both the points are at the same elevation. The fluid density is . The flow can be assumed to be incompressible, inviscid,
A triangular pipe network is shown in the figure. The head loss in each pipe is given by with the variables expressed in a consistent set of units. The value of r for the pipe AB is 1 and for the pipe
Water flows through a 90 bend in a horizontal plane as depicted in the figure. A pressure of 140 kPa is measured at section 1-1. The inlet diameter marked at section 1-1 is , while the nozzle diameter
A sluice gate used to control the flow in a horizontal channel of unit width is shown in the figure. It is observed that the depth of flow is 1.0 m upstream of the gate, while the depth is 0.2 m downs
A 1 m wide rectangular channel has a bed slope of 0.0016 and the Manning's roughness coefficient is 0.04. Uniform flow takes place in the channel at a flow depth of 0.5 m. At a particular section, gra
The accuracy of an Electronic Distance Measuring Instrument (EDMI) is specified as ( a mm + b ppm). Which one of the following statements is correct?
An observer standing on the deck of a ship just sees the top of a lighthouse. The top of the lighthouse is 40 m above the sea level and the height of the observer's eye is 5 m above the sea level. The
The method of orientation used, when the plane table occupies a position not yet located on the map, is called as
Two towers A and B, standing vertically on a horizontal ground, appear in a vertical aerial photograph as shown in the figure. The length of the image of the tower A on the photograph is1.5 cm and of
The VPI (vertical point of intersection) is 100 m away (when measured along the horizontal) from the VPC (vertical point of curvature). If the vertical curve is parabolic, the length of the curve (in
The number of spectral bands in the Enhanced Thematic Mapper sensor on the remote sensing satellite Landsat-7 is
The observed bearings of a traverse are given below: The stations(s) most likely to be affected by the local attraction is/are
Group I lists the type of gain or loss of strength in soils. Group II lists the property or process responsible for the loss or gain of strength in soils. The correct match between Group I and Group I
A consolidated undrained triaxial compression test is conducted on a normally consolidated clay at a confining pressure of 100 kPa. The deviator stress at failure is 80 kPa, and the pore-water pressur
A sheet pile has an embedment depth of 12 m in a homogeneous soil stratum. The coefficient of permeability of soil is . Difference in the water levels between the two sides of the sheet pile is 4 m. T
Consider the following statements related to the pore pressure parameters, A and B: P. A always lies between 0 and 1.0 Q. A can be less than 0 or greater than 1.0 R. B always lies between 0 and 1.0 S.
Two identical concrete piles having the plan dimensions 50 cm x 50 cm are driven into a homogeneous sandy layer as shown in the figures. Consider the bearing capacity factor , for as 24 If and represe
Consider a square-shaped area ABCD on the ground with its Centre at M as shown in the figure. Four concentrated vertical load of P=5000 kN are applied on this area, at each corner. The vertical stress
Consider a rigid retaining wall with partially submerged cohesionless backfill with a surcharge. Which one of the following diagrams closely represents the Rankine's active earth pressure distribution
A soil sample is subjected to a hydrostatic pressure, . The Mohr circle for any point in the soil sample would be
Let G be the specific gravity of soil solids, w the water content in the soil sample, the unit weight of water, and the dry unit weight of the soil. The equation for the zero air voids line in a compa
The plate load test was conducted on clayey strata by using a plate of 0.3mx0.3 m dimensions, and the ultimate load per unit area for the plate was found to be 180 kPa. The ultimate bearing capacity (
It is proposed to drive H-piles up to a depth of 7 m at a construction site. The average surfacearea of the H-pile is 3 per meter length. The soil at the site is homogeneous sand, havingan effective f
For the construction of a highway. A cut is to be made as shown in the figure. The soil exhibits and the undrained shear strength = 80 kPa. The unit weight of water is 9.81 . The unit weights of the s
Following are the statements related to the stress paths in a triaxial testing of soils: P. If , the stress point lies at the origin of the p-q plot. Q. If, the stress point lies on the p-axis of the
A 3 m thick clay layer is subjected to an initial uniform pore pressure of 145 kPa as shown in the figure. For the given ground conditions, the time (in days, rounded to the nearest integer) required
The infinite sand slope shown in the figure is on theverge of sliding failure. The ground water tablecoincides with the ground surface. Unit weight of water . The value of the effective angle of inter
A uniformly distributed line load of 500 kN/m is acting on the ground surface. Based on Boussinesq's theory, the ratio of vertical stress at a depth 2 m to that at 4 m, right below the line of loading
A strip footing is resting on the ground surface of a pure clay bed having an undrainedcohesion . The ultimate bearing capacity of the footing is equal to
The laboratory test on a soil sample yields the following results: natural moisture content = 18%, liquid limit = 60%, plastic limit = 25%, percentage of clay sized fraction = 25%. The liquidity index
The culturable command area of a canal is 10,000 ha. The area grows only two crops-rice in the Kharif season and wheat in the Rabi season. The design discharge of the canal is based on the rice requir
Group I contains three broad classes of irrigation supply canal outlets. Group II presents hydraulic performance attributes. The correct match of the items in Group I with the items in Group II is
A pre-tensioned rectangular concrete beam 150 mm wide and 300 mm depth is prestressed with three straight tendons, each having a cross-sectional area of 50 , to an initial stress of 1200 . The tendons
Let the characteristic strength be defined as that value, below which not more than 50% of the results are expected to fall. Assuming a standard deviation of 4 MPa, the target mean strength (in MPa) t
A simply supported rectangular concrete beam of span 8m has to be prestressed with a force of 1600 kN. The tendon is of parabolic profile having zero eccentricity at the supports. The beam has to carr
According to IS 456-2000, which one of the following statements about the depth of neutral axis for a balanced reinforced concrete section is correct?
A simply supported beam is subjected to uniformly distributed load. Which one of the following statements is true?
An elastic bar of length L, uniform cross sectional area A, coefficient of thermal expansion , and Young's modulus E is fixed at the two ends. The temperature of the bar is increased by T, resulting i
Consider the stepped bar made with a linear elastic material and subjected to an axial load of 1 kN, as shown in the figure. Segments 1 and 2 have cross-sectional are of and , Young's modulus of MPa a
Consider two axially loaded columns, namely, 1 and 2, made of a linear elastic material with Young's modulus MPa, square cross- section with side 10 mm, and length 1 m. For Column 1, one end is fixed
Two prismatic beams having the same flexural rigidity of 1000 are shown in the figures. If the mid-span deflections of these beams are denoted by (as indicated in the figures). The correct option is
A 2 m long, axially loaded mild steel rod of 8 mm diameter exhibits the load-displacement behavior as shown in the figure. Assume the yield stress of steel as 250 Mpa. The complementary energy (in N-m
In a material under a state of plane strain, a 10x10 mm square centered at a point gets deformed as shown in the figure. If the Shear strain at this point is expressed as 0.001k(in rad),the value of k
Consider the three prismatic beamwith the clamped supports P, Q and R as shown in the figures Given that modulus of Elasticity, E is and the moment of inertia, is , the correct Comparison of the magni
A hollow circular shaft has an outer diameter of 100 mm and inner diameter of 50 mm. If the allowable shear stress is 125 MPa, the maximum torque (in kN-m) that the shaft can resist is____
A column is subjected to a load through a bracket as shown in the figure. The resultant force (in kN, up to one decimal place) in the bolt 1 is_____
Two plates of 8 mm thickness each are connected by a fillet weld of 6 mm thickness as shown in the figure. The permissible stresses in the plate and the weld are 150 MPa and 110 MPa, respectively. Ass
The value of M in the beam ABC shown in the figure is such that the joint B does not rotate. The value of support reaction (in kN) at B should be equal to ______
Consider the portal frame shown in the figure and assume the modulus of elasticity MPa and the moment of inertial, for all the members of the frame. The rotations (in degrees, up to decimal place) at
A Planar truss tower structure is shown in the figure. Consider the following statements about the external and internal determinacies of the truss. (P) Externally Determinate (Q) External Static Inde
Consider the frame shown in the figure: If the axial and Shear deformation in different members of the frame are assumed to be negligible. The reduction in the degree of Kinematical indeterminacy woul
The figure shows a two-hinged parabolic arch of span L subjected to a uniformly distributed load of intensity q per unit length The maximum bending moment in the arch is equal to
Consider the beam ABCD shown in the figure. For a moving concentrated load of 50 kN on the beam, the magnitude of the maximum bending moment (in kN-m) obtained at the support C will be equal to _____
For a broad gauge railway track on a horizontal curve of radius R (in m), the equilibrium cant e required for a train moving at a speed of V (in km per hour) is
The radii of relative stiffness of the rigid pavements P and Q are denoted by and , respectively. The geometric and material properties of the concrete slab and underlying soil are given below: The ra
The following observations are made while testing aggregate for its suitability in pavement construction: i. Mass of oven-dry aggregate in air = 1000 g ii. Mass of saturated surface-dry aggregate in a
While aligning a hill road with a ruling gradient of 6 %, a horizontal curve of radius 50 m is encountered. The grade compensation (in percentage, up to two decimal places) to be provided for this cas
Two cars P and Q are moving in a racing track continuously for two hour. Assume that no other vehicles are using the track during this time. The expressions relating the distance travelled d (in km) a
Vehicles arriving at an intersection from one of the approach road follow the Poisson distribution. The mean rate of arrival is 900 vehicles per hour. If a gap is defined as the time difference betwee
The safety within a roundabout and the efficiency of a roundabout can be increased, respectively, by
A runway is being constructed in a new airport as per the International Civil Aviation Organization (ICAO) recommendations. The elevation and the airport reference temperature of this airport are 535
The queue length (in number of vehicles) versus time (in seconds) plot for an approach to a signalized intersection with the cycle length of 96 seconds is shown in the figure. At time t = 0, the light
A super-elevation e is provided on a circular horizontal curve such that a vehicle can be stopped on the curve without sliding. Assuming a design speed v and maximum coefficient of side friction , whi
The radius of a horizontal circular curve on a highway is 120 m. The design speed is 60 km/hour, and the design coefficient of lateral friction between the tyre and the road surface is 0.15. The estim