Previous Year Questions
49 questions — organised by subject with solutions and explanations.
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The correct match of Column-I with Column-II is
The reference pressure used in the determination of sound pressure level is
An aerobic reactor receives wastewater at a flow rate of 500 having a COD of 2000 mg/L. The effluent COD is 400 mg/L. Assuming that wastewater contains 80% biodegradable waste, the daily volume of met
Particulate matter (fly ash) carried in effluent gases from the furnaces burning fossil fuels are better removed by
The relationship among specific yield ( ), specific retention ( ) and porosity ( ) of an aquifer is
Following chemical species were reported for water sample form a well : Total hardness in mg/L as is is
A horizontal flow primary clarifier treats wastewater in which 10%, 60% and 30% of particles have settling velocities of 0.1 mm/s, 0.2 mm/s and 0.1 mm/s respectively. What would be the total percentag
Following chemical species were reported for water sample form a well : Alkalinity present in the water in mg/L as is
The correct match of Column-I with Column-II is
Water ( ) flows with a flow rate of 0.3 through a pipe AB of 10 m length and of uniform cross-section. The end 'B' is above end 'A' and the pipe makes an angle of 30 to the horizontal. For a pressure
A rectangular open channel of width 4.5 m is carrying a discharge of 100 . The critical depth of the channel is
Direct step method of computation for gradually varied flow is
Water flows through a 100 mm diameter pipe with a velocity of 0.015 m/sec. If the kinematic viscosity of water is , the friction factor of the pipe material is
Determine the correctness or otherwise of the following Assertion[a] and the Reason[r]: Assertion[a]: Curvature correction must be applied when the sights are long. Reason[r]: Line of collimation is n
The magnetic bearing of a line AB was in the year 1967, when the declination was . If the present declination is , the whole circle bearing of the line is
In quadrantal bearing system, bearing of a line varies from
A precast concrete pile is driven with a 50 kN hammer railing through a height of 1.0 m with an efficiency of 0.6. The set value observed is 4 mm per below and the combined temporary compression of th
Examine the test arrangement and the soil properties given below : The maximum resistance offered by the soil through skin friction while pulling out the pile from the ground is
The laboratory test results of a soil sample are given below : Percentage finer than 4.75 mm= 60 Percentage finer than 0.075 mm= 30 Liquid Limit= 35% Plastic Limit27% The soil classification is
Using the properties of the clay layer derived from the above question, the consolidation settlement of the same clay layer under a square footing (neglecting its self weight) with additional data sho
Deposit with flocculated structure is formed when
A plate load test is carried out on a plate placed at 2 m below the ground level to determine the bearing capacity of a footing placed at same depth of 2 m on a homogeneous sand deposit extending 10 m
Examine the test arrangement and the soil properties given below : The maximum pressure that can be applied with a factor of safety of 3 through the concrete block, ensuring no bearing capacity failur
Dilatancy correction is required when a strata is
A saturated undisturbed sample from a clay strata has moisture content of 22.22% and specific weight of 2.7. Assuming , the void ratio and the saturated unit weight of the clay, respectively are
An agricultural land of 437 ha is to be irrigated for a particular crop. The base period of the crop is 90 days and the total depth of water required by the crop is 105 cm. If a rainfall of 15 cm occu
The depth of flow in an alluvial channel is 1.5 m. If critical velocity ratio is 1.1 and Manning's n is 0.018, the critical velocity of the channel as per Kenedy's method is
Column-I gives a list of test methods for evaluating properties of concrete and Column-II gives the list of properties. The correct match of the test with the property is
For limit state of collapse, the partial safety factors recommended by IS 456:2000 for estimating the design strength of concrete and reinforcing steel are respectively
A rectangular concrete beam of width 120 mm and depth 200 mm is prestressed by pretensioning to a force of 150 kN at an eccentricity of 20 mm. The crosssectional area of the prestressing steel is 187.
The modulus of rupture of concrete in terms of its characteristic cube compressive strength ( ) in MPa according to IS 456:2000 is
Consider the following statements : I. On a principal plane, only normal stress acts. II. On a principal plane, both normal and shear stresses act. III. On a principal plane, only shear stress acts IV
Group-I gives the shear force diagrams and Group-II gives the diagram of beams with supports and loading. Match the Group-I with Group-II.
The point within the cross sectional plane of a beam through which the resultant of the external loading on the beam has to pass through to ensure pure bending without twisting of the cross-section of
A hollow circular shaft has an outer diameter of 100 mm and a wall thickness of 25 mm. The allowable shear stress in the shaft is 125 MPa. The maximum torque the shaft can transmit is
A thin walled cylindrical pressure vessel having a radius of 0.5 m and wall thickness of 25 mm is subjected to an internal pressure of 700 kPa. The hoop stress developed is
In the cantilever beam PQR shown in figure below, the segment PQ has flexural rigidity EI and the segment QR has infinite flexural rigidity. The deflection of the beam at R is
Consider the following statements for a compression member: I. The elastic critical stress in compression increases with decrease in slenderness ratio II. The effective length depends on the boundary
The square root of the ratio of moment of inertia of the cross-section to its cross-sectional area is called
A 12 mm thick plate is connected to two 8 mm thick plates, on either side through a 16 mm diameter power driven field rivet as shown in the figure below. Assuming permissible shear stress as 90 MPa an
In the theory of plastic bending of beams, the ratio of plastic moment to yield moment is called
During a CBR test, the load sustained by a remolded soil specimen at 5.00 mm penetration is 50 kg. The CBR value of the soil will be
Which of the flowing stress combinations are appropriate in identifying the critical condition for the design of concrete pavements ?
A three-phase traffic signal at an intersection is designed for flows shown in the figure below. There are six groups of flows identified by the numbers 1 through 6. Among these 1, 3, 4 and 6 are thro
A crest vertical curve joins two gradients of +3% and -2% for a design speed of 80 km/h and the corresponding stopping sight distance of 120 m. The height of driver's eye and the object above the road
The value of lateral friction or side friction used in the design of horizontal curve as per Indian Roads Congress guidelines is
On a specific highway, the speed-density relationship follows the Greenbeg's model , where and are the free flew speed and jam density respectively. When the highway is operating at capacity, the dens