MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 386 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
Lysimeter and Tensiometer are used to measure respectively, one of the following groups of quantities : |
| A. | Capillary potential and permeability |
| B. | Evapotranspiration and capillary potential |
| C. | Velocity in channels and vapour pressure |
| D. | Velocity in pipes and pressure head |
| Answer» C. Velocity in channels and vapour pressure | |
| 302. |
A tube well having a capacity of 4 m3/hour operates for 20 hours each day during the irrigation season. How much area can be commanded if the irrigation interval is 20 days and depth of irrigation is 7 cm ? |
| A. | 1.71 x 104 m2 |
| B. | 1.14 x 104 m2 |
| C. | 22.9 x 104 m2 |
| D. | 2.29 x 104 m2 |
| Answer» E. | |
| 303. |
For the determination of earth pressure, Coulomb's wedge theory assumes that: |
| A. | the back of wall is smooth and vertical |
| B. | the soil is non-homogeneous and anisotropic |
| C. | the slip surface is circular |
| D. | the wall surface is rough |
| Answer» E. | |
| 304. |
The maximum permissible deflection for a gantry girder, spanning over 6 m, on which an EOT (electric overhead travelling) crane of capacity 200 kN is operating, is |
| A. | 8 mm |
| B. | 10 mm |
| C. | 12 mm |
| D. | 18 mm |
| Answer» B. 10 mm | |
| 305. |
The reaction time for calculation of stopping distance may be assumed as |
| A. | 5 secs |
| B. | 2.5 secs |
| C. | 0.5 secs |
| D. | 10.0 secs |
| Answer» C. 0.5 secs | |
| 306. |
A wastewater sample contains 10-5.6 mmol/l of OH ions at 25° C. The pH of this sample is |
| A. | 8.6 |
| B. | 8.4 |
| C. | 5.6 |
| D. | 5.4 |
| Answer» E. | |
| 307. |
The downstream end of a long prismatic channel of mild slope, ends in a pool created by a dam. The resulting non-uniform water surface profile can be described as one of the following : |
| A. | M3 profile ending in a hydraulic jump |
| B. | M1 profile that lies above normal depth line |
| C. | M2 profile that lies between critical and normal depth lines |
| D. | M3 profile that lies between critical and normal depth lines |
| Answer» E. | |
| 308. |
For a highway with design speed of 100 kmph, the safe overtaking sight distance is (assume accelerations as 0.53 m/sec2) |
| A. | 300 m |
| B. | 750 m |
| C. | 320 m |
| D. | 470 m |
| Answer» C. 320 m | |
| 309. |
Vane tester is normally used for determining in situ shear strength of : |
| A. | soft clays |
| B. | sand |
| C. | stiff clays |
| D. | gravel |
| Answer» B. sand | |
| 310. |
In highway pavements emulsions are mainly used in : |
| A. | surface dressing |
| B. | patching and maintenance operation |
| C. | bitumen macadam |
| D. | asphaltic concrete |
| Answer» C. bitumen macadam | |
| 311. |
To have zero active pressure intensity at the tip of a wall in cohesive soil, one should apply a uniform surcharge intensity of |
| A. | 2c tan α |
| B. | 2c cot α |
| C. | - 2c cot α |
| D. | - 2c tan α |
| Answer» C. - 2c cot Œ± | |
| 312. |
The span to depth ratio limit is specified in IS : 456-1978 for the reinforced concrete beams, in order to ensure that the |
| A. | tensile crack width is below a limit |
| B. | shear failure is avoided |
| C. | stress in the tension reinforcement is less than the allowable value |
| D. | deflection of the beam is below a limiting value |
| Answer» E. | |
| 313. |
The effective length of a circular electric pole of length L and constant diameters erected on ground is, |
| A. | 0.80 L |
| B. | 1.20 L |
| C. | 1.50 L |
| D. | 2.00 L |
| Answer» E. | |
| 314. |
Un-factored maximum bending moments at a section of a reinforced concrete beam resulting from a frame analysis are 50, 80, 120 and 180 kNm under dead, live, wind and earthquake loads respectively. The design moment (kNm) as per IS: 456-2000 for the limit state of collapse (flexure) is |
| A. | 195 |
| B. | 250 |
| C. | 345 |
| D. | 372 |
| Answer» E. | |
| 315. |
A single rapid test to determine the pollu-tional status of river water is : |
| A. | biochemical oxygen demand |
| B. | chemical oxygen demand |
| C. | total organic solids |
| D. | dissolved oxygen |
| Answer» D. dissolved oxygen | |
| 316. |
The stress-strain diagram for two materials A and B is shown below. The following statements are made based on this diagram : Mateiral A is more brittle than material B.The ultimate strength of material B is more than that of A. With reference to the above statements, which of the following applies ? |
| A. | Both the statements are false. |
| B. | Both the statements are true. |
| C. | I is true but II is false. |
| D. | I is false but II is true. |
| Answer» E. | |
| 317. |
The water surface profile resulting from flow underneath the gate in the below figure is : |
| A. | H3 |
| B. | M1 |
| C. | H2 |
| D. | S2 |
| Answer» C. H2 | |
| 318. |
The group efficiency of a pile group |
| A. | will be always less than 100%. |
| B. | will be always greater than 100%. |
| C. | may be less than 100% or more than 100%. |
| D. | will be more than 100% for pile groups in cohensionless soils and less than 100% for those in cohesive soils. |
| Answer» E. | |
| 319. |
The permissible bending tensile stress in concrete for the vertical wall of an R.C. water tank made of M 25 concrete is : |
| A. | 8.5 N/mm2 |
| B. | 6.0 N/mm3 |
| C. | 2.5 N/mm2 |
| D. | 1.8 N/mm2 |
| Answer» E. | |
| 320. |
The focal length of the object glass of a tacheometer is 200 mm, the distance between the vertical axis of the tachometer and the optical centre of the object glass is 100 mm and the spacing between the upper and lower line of the diaphragm axis is 4 mm. With the line of collima-tion perfectly horizontal, the staff intercepts are 1 m (top), 2 m (middle), and 3 m (bottom). The horizontal distance (m) between the staff and the instrument station is |
| A. | 100.3 |
| B. | 103 |
| C. | 150 |
| D. | 153 |
| Answer» B. 103 | |
| 321. |
The particle size distribution curves are extremely useful for the classification of |
| A. | fine grained soils |
| B. | coarse grained soils |
| C. | both coarse grained and fine grained soils |
| D. | silts and clays |
| Answer» D. silts and clays | |
| 322. |
Horizontal stiffness coefficient, K11 of bar ab is given by : |
| A. | A E/l 2 |
| B. | A E/2 1 |
| C. | A E/l |
| D. | 2 A E/l |
| Answer» B. A E/2 1 | |
| 323. |
In an iceberg, 15% of the volume projects above the sea surface. If the specific weight of sea water is 10.5 kN/m3 , the specific weight of iceberg ir kN/m3 is |
| A. | 12.52 |
| B. | 9.81 |
| C. | 8.93 |
| D. | 7.83 |
| Answer» D. 7.83 | |
| 324. |
A borrow pit soil has a dry density of 17 kN/m3. How many cubic meters of this soil will be required to construct an embankment of 100 m3 volume with a dry density of 16 kN/m3. |
| A. | 94 m3 |
| B. | 106 m3 |
| C. | 100 m3 |
| D. | 90 m3 |
| Answer» B. 106 m3 | |
| 325. |
The comparison between pumps operating in series and in parallel is : |
| A. | Pumps operating in series boost the discharge, whereas pumps operating in parallel boost the head. |
| B. | Pumps operating in parallel boost the discharge, whereas pumps operating in series boost the head. |
| C. | In both cases there would be a boost in discharge only. |
| D. | In both cases there would be a boost in head only. |
| Answer» C. In both cases there would be a boost in discharge only. | |
| 326. |
The lateral ties in a reinforced concrete rectangular column uncle: axial compression are used to : |
| A. | avoid the buckling of the longitudinal steel under compression |
| B. | provide adequate shear capacity |
| C. | provide adequate confinement to concrete |
| D. | reduce the axial deformation of the column |
| Answer» B. provide adequate shear capacity | |
| 327. |
A nozzle discharging water under head H has an outlet area "a" and discharge coefficient cd = 1.0. A vertical plate is acted upon by the fluid force Fj when held across the free jet and by the fluid force Fn when held against the nozzle to stop the flow, the ratio Fj/Fn is |
| A. | 43497 |
| B. | 1 |
| C. | 2 |
| D. | 2 |
| Answer» C. 2 | |
| 328. |
A test plate 30 cm x 30 cm resting on a sand deposit settles by 10 mm under a certain loading intensity. A footing 150 cm x 200 cm resting on the same sand deposit and loaded to the same load intensity settles by |
| A. | 2.0 mm |
| B. | 27.8 mm |
| C. | 3.02 mm |
| D. | 50.0 mm |
| Answer» C. 3.02 mm | |
| 329. |
In the plate bearing test, if the load applied is in the form of an inflated type of wheel, then this mechanism corresponds to : |
| A. | rigid plate |
| B. | flexible plate |
| C. | semi-rigid plate |
| D. | semi-elastic plate |
| Answer» D. semi-elastic plate | |
| 330. |
The percentage error in the computed discharge over a triangular notch corresponding to an error of 1% in the measurement of the head over the notch, would be |
| A. | 1 |
| B. | 1.5 |
| C. | 2 |
| D. | 2.5 |
| Answer» E. | |
| 331. |
The ideal form of curve for the summit curve is : |
| A. | spiral |
| B. | parabola |
| C. | circle |
| D. | lemniscate |
| Answer» C. circle | |
| 332. |
A stable channel is to be designed for a discharge of Q m3 /s with silt factor f as per Lacey's method. The mean flow velocity (m/s) in the channel is obtained by |
| A. | (Qf2/140)1/6 |
| B. | (Qf/140)1/3 |
| C. | (Q2f2/140)1/6 |
| D. | 0.48 (Q/f)1/3 |
| Answer» B. (Qf/140)1/3 | |
| 333. |
An outlet irrigates an area of 20 ha. The discharge (l/s) required at this outlet to meet the evapotranspiration requirement of 20 mm occurring uniformly in 20 days neglecting other field losses is |
| A. | 2.52 |
| B. | 2.31 |
| C. | 2.01 |
| D. | 1.52 |
| Answer» C. 2.01 | |
| 334. |
The net effective cross sectional area calculated in the steel angle tension member design, accounts for: |
| A. | the tensile force and bolt holes |
| B. | the eccentricity of the end connections and the bolt holes |
| C. | the effectiveness of the tack connection along the length |
| D. | the effectiveness of the end connection |
| Answer» B. the eccentricity of the end connections and the bolt holes | |
| 335. |
Some of the structural strength of a clayey material that is lost by remoulding is slowly recovered with time. This property of soils to undergo an isothermal gel-to-soil-to-gel transformation upon agitation and subsequent rest is termed : |
| A. | Isotropy |
| B. | Anisotropy |
| C. | Thixotropy |
| D. | Allotropy |
| Answer» D. Allotropy | |
| 336. |
For the frame shown in the below figure, the maximum bending moment in the column is, |
| A. | zero |
| B. | 400 kNm |
| C. | 100 kNm |
| D. | 200 kNm |
| Answer» C. 100 kNm | |
| 337. |
A water treatment plant is required to process 28800 m3/d of raw water (density = 1000 kg/m3, kinematic viscosity = 10-6 m2/s). The rapid mixing tank imparts tank a velocity gradient of 900s-1 to blend 35 mg/l of alum with the flow for a detention time of 2 minutes. The power input (W) required for rapid mixing is |
| A. | 32.4 |
| B. | 36 |
| C. | 324 |
| D. | 32400 |
| Answer» E. | |
| 338. |
Sewage treatment in an oxidation pond is accomplished primarily by : |
| A. | alga-bacterial symbiosis |
| B. | algal photosynthesis only |
| C. | bacterial oxidation only |
| D. | chemical oxidation only |
| Answer» C. bacterial oxidation only | |
| 339. |
The function of ballast in railaway tracks is to |
| A. | facilitate drainage |
| B. | serve as an elastic support for the track structure |
| C. | provide the necessary resilience against the dynamic effect of the loads |
| D. | all the above |
| Answer» E. | |
| 340. |
The total thickness of pavement by CBR method depends on the CBR value of |
| A. | base course |
| B. | surface course |
| C. | subgrade |
| D. | all layers |
| Answer» E. | |
| 341. |
X-component of velocity in a 2-D incompressible flow is given by u = y2 + 4 xy. If Y-com-ponent of velocity 'v' equals zero at y = 0, the expression for 'v' is given by |
| A. | 4y |
| B. | 2y2 |
| C. | -2y2 |
| D. | 2xy |
| Answer» D. 2xy | |
| 342. |
A hydraulic turbine has a discharge of 5 m3/s, when operating under a head of 20 m with a speed of 500 rpm. If it is to operate under a head of 15 m, for the same discharge, the rotational speed in rpm will approximately be |
| A. | 433 |
| B. | 403 |
| C. | 627 |
| D. | 388 |
| Answer» B. 403 | |
| 343. |
The dimension of a pressure gradient in a fluid flow are : |
| A. | ML-1T2 |
| B. | ML-3T-2 |
| C. | ML-2T-2 |
| D. | M-1L-1T-2 |
| Answer» D. M-1L-1T-2 | |
| 344. |
A saturated clay stratum draining both at the top and bottom undergoes 50 percent consolidation in 16 years under an applied load. If an additional drainage layer were present at the middle of the clay stratum, 50 percent consolidation would occur in |
| A. | 2 years |
| B. | 4 years |
| C. | 8 years |
| D. | 16 years |
| Answer» C. 8 years | |
| 345. |
The slope of the e-log p curve for a soil mass gives : |
| A. | coefficient of permeability, k |
| B. | coefficient of consolidation Cv |
| C. | compression index, Cc |
| D. | coefficient of volume compressibility, mv |
| Answer» C. compression index, Cc | |
| 346. |
The minimum area of tension reinforcement in a beam shall be greater than |
| A. | 0.85 bd/fy |
| B. | 0.87 fy/bd |
| C. | 0.04 bd |
| D. | 0.4 bd/y |
| Answer» B. 0.87 fy/bd | |
| 347. |
On an immersed body in a flowing fluid the lift force is : |
| A. | due to buoyant force |
| B. | always in the opposite direction to gravity |
| C. | due to Wake phenomenon |
| D. | the dynamic fluid-force component normal to approach velocity |
| Answer» C. due to Wake phenomenon | |
| 348. |
For a 'best' symmetrical trapezoidal section of an open channel with a given area of section and side slopes, one of the following statements holds true : |
| A. | Half the top width is equal to one of the side slopes |
| B. | Half the top width plus the bottom width is equal to both the side slopes put together |
| C. | Water depth is equal to half bottom width |
| D. | Hydraulic mean depth is equal to half the top width |
| Answer» B. Half the top width plus the bottom width is equal to both the side slopes put together | |
| 349. |
The modulus of subgrade reaction is obtained from the plate bearing test in the form of load-deformation curve. The pressure corresponding to the following settlement value should be used for computing modulus of subgrade reaction |
| A. | 0.375 cm |
| B. | 0.175 cm |
| C. | 0.125 cm |
| D. | 0.250 cm |
| Answer» D. 0.250 cm | |
| 350. |
Generally (fatigue life of welded steel structure/fatigue life of riveted steel structure) ratio is, |
| A. | smaller than 1 |
| B. | equal to 1 |
| C. | greater than 1 |
| D. | greater than 2.1 |
| Answer» B. equal to 1 | |