MCQOPTIONS
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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.
| 351. |
Shear stress develops on a fluid element, if : |
| A. | the fluid is at least |
| B. | the fluid-container is subject to uniform linear acceleration |
| C. | the fluid is inviscid |
| D. | the fluid is viscous and the flow is nonuniform |
| Answer» E. | |
| 352. |
The total active thrust on a vertical wall 3m high retaining a horizontal sand backfill (unit weight γt = 20 kN/m3, angle of shearing resistance φ' = 30°) when the water table is at the bottom of the wall, will be: |
| A. | 30 kN/m |
| B. | 35 kN/m |
| C. | 4 kN/m |
| D. | 45 kN/m |
| Answer» B. 35 kN/m | |
| 353. |
A point load of 700 kN is applied on the surface of thick layer of clay. Using Boussinesq's elastic analysis, the estimated vertical stress (σv) at a depth of 2 m and a radial distance of 1.0 m from the point of application of the load, is : |
| A. | 47.5 kPa |
| B. | 47.6 kPa |
| C. | 47.7 kPa |
| D. | 47.8 kPa |
| Answer» E. | |
| 354. |
The microbial quality of treated piped water supplies is monitored by |
| A. | Microscopic examination |
| B. | Plate count of heterotrophic bacteria |
| C. | Coliform MPN test |
| D. | Identification of all pathogens |
| Answer» D. Identification of all pathogens | |
| 355. |
A pre-tensioned concrete member of section 200 mm x 250 mm contains tendons of area 500 mm2 at centre of gravity of the section. The prestress in the tendons is 1000 N/mm2. Assuming modular ratio as 10, the stress (N/mm2) in concrete is |
| A. | 11 |
| B. | 9 |
| C. | 7 |
| D. | 5 |
| Answer» C. 7 | |
| 356. |
A parabolic curve is used to connect a 4% upgrade with a 2% downgrade as shown in the below figure. The highest point on the summit is at a distance of (measured horizontally from the first tangent point - (FTP) |
| A. | 50 m |
| B. | 60 m |
| C. | 75 m |
| D. | 100 m |
| Answer» D. 100 m | |
| 357. |
The capacities of "One-way 1.5 m wide sidewalk (persons per hour)" and "One-way 2-lane urban road (PCU per hour, with no frontage access, no standing vehicles and very little cross traffic)" are respectively. |
| A. | 1200 and 2400 |
| B. | 1800 and 2000 |
| C. | 1200 and 1500 |
| D. | 2000 and 1200 |
| Answer» B. 1800 and 2000 | |
| 358. |
The 5-day BOD of a wastewater sample is obtained as 190 mg/l (with k = 0.01 h-1). The ultimate oxygen demand (mg/l) of the sample will be |
| A. | 3800 |
| B. | 475 |
| C. | 271 |
| D. | 190 |
| Answer» D. 190 | |
| 359. |
The values of liquid limit and plasticity index for soils having common geological origin in a rectricted locality usually define |
| A. | A zone above A-line |
| B. | A straight line parallel to A-line |
| C. | A straight line perpendicular to A-line |
| D. | Points may be anywhere in the plasticity chart |
| Answer» C. A straight line perpendicular to A-line | |
| 360. |
A hyetograph is a graph representing |
| A. | rainfall volume with time |
| B. | rainfall intensity with time |
| C. | rainfall intensity with duration |
| D. | rainfall intensity over an area |
| Answer» C. rainfall intensity with duration | |
| 361. |
Storage coefficient of a compressible confined aquifer is a function of |
| A. | specific weight of water, thickness of the aquifer, compressibility of the aquifer and that of water |
| B. | permeability, thickness and compressibility of aquifer and compressibility of water |
| C. | transmissibility of the aquifer and compressibility of water |
| D. | transmissibility of aquifer and specific yield of aquifer |
| Answer» E. | |
| 362. |
At a rated capacity of 44 Cumecs, a centrifugal pump develops 36 m of head when operating at 1450 rpm. Its specific speed is : |
| A. | 654 |
| B. | 509 |
| C. | 700 |
| D. | 90 |
| Answer» B. 509 | |
| 363. |
The cylinder strength of the concrete is less than the cube strength because of |
| A. | the difference in the shape of the cross section of the specimens |
| B. | the difference in the slendeness ratio of the specimens |
| C. | the friction between the concrete specimens and the steel plate of the testing machine |
| D. | the cubes are tested without capping but the cylinders are tested with capping |
| Answer» C. the friction between the concrete specimens and the steel plate of the testing machine | |
| 364. |
Critical factors for the activated sludge treatment process are |
| A. | maximum hourly flow rate. |
| B. | maximum and minimum flow rate. |
| C. | maximum hourly flow rate and maximum daily organic load. |
| D. | minimum hourly flow rate and minimum daily organic load. |
| Answer» D. minimum hourly flow rate and minimum daily organic load. | |
| 365. |
Flexible pavements derive stability primarily from : |
| A. | aggregate interlock, particle friction and cohesion |
| B. | cohesion alone |
| C. | the binding power of bituminous materials |
| D. | the flexural strength of the surface course |
| Answer» B. cohesion alone | |
| 366. |
Consolidation in soils |
| A. | is a function of the effective stress |
| B. | does not depend on the present stress |
| C. | is a function of the pore water pressure |
| D. | is a function of the total stress |
| Answer» D. is a function of the total stress | |
| 367. |
The span (s) to be loaded uniformly for maximum positive (upward) reaction at support P, as shown in the figure below, is (are) |
| A. | PQ only |
| B. | PQ and QR |
| C. | QR and RS |
| D. | PQ and RS |
| Answer» E. | |
| 368. |
Water table drops by 3 m in an irrigable land of 50 hectare. If porosity and specific retention are 0.30 and 0.10 respectively, the change in storage in hectare-meter is : |
| A. | 15 |
| B. | 30 |
| C. | 45 |
| D. | 60 |
| Answer» C. 45 | |
| 369. |
The characteristic strength of concrete is defined as that compressive strength below which not more than |
| A. | 10% of results fall |
| B. | 5% of results fall |
| C. | 2% of results fall |
| D. | None of the above. |
| Answer» C. 2% of results fall | |
| 370. |
Is 459-1978 recommends to provide certain minimum steel in a RCC beam |
| A. | to ensure compression failure |
| B. | to avoid rupture of steel in case a flexural failure occurs |
| C. | to hold the stirrup steel in position |
| D. | to provide enough ductility to the beam |
| Answer» C. to hold the stirrup steel in position | |
| 371. |
In a reinforced concrete beam-column, the increase in the flexural strength along with the increase in the axial strength occurs |
| A. | beyond the elastic limit of the material |
| B. | when the yield of the tension reinforcement governs the strength |
| C. | when the crushing of the concrete in the compression zone governs the strength |
| D. | never |
| Answer» C. when the crushing of the concrete in the compression zone governs the strength | |
| 372. |
In reinforced concrete, pedestal is defined as compression member, whose effective length does not exceed its least dimension by |
| A. | 12 times |
| B. | 3 times |
| C. | 16 times |
| D. | 8 times |
| Answer» C. 16 times | |
| 373. |
On sag (or valley) curves the available sight distance is determined based on : |
| A. | design speed |
| B. | height of obstacle |
| C. | height of driver eye |
| D. | night-time driving conditions |
| Answer» D. night-time driving conditions | |
| 374. |
The wall shown in the below figure has failed. The cause of failure or the error made in the design of the failded wall is : |
| A. | deep slip surface failure |
| B. | overturning |
| C. | no proper drainage in the clay backfill |
| D. | translational failure |
| Answer» C. no proper drainage in the clay backfill | |
| 375. |
The value of bearing capacity factor for cohesion, Nc, for piles as per Meyerhof, is taken as : |
| A. | 6.2 |
| B. | 12 |
| C. | 9 |
| D. | 5.14 |
| Answer» E. | |
| 376. |
The treatment that should be given to the water from a deep tube well is : |
| A. | pre-settling only |
| B. | coagulation and flocculation only |
| C. | filtration only |
| D. | disinfection only |
| Answer» E. | |
| 377. |
The unit for coefficient of subgrade modulus is |
| A. | kN/m3 |
| B. | kN/m2 |
| C. | kN/m |
| D. | kN.m |
| Answer» B. kN/m2 | |
| 378. |
The kinetic energy correction factor for a full developed laminar flow through a circular pipe is |
| A. | 1 |
| B. | 1.33 |
| C. | 2 |
| D. | 1.5 |
| Answer» D. 1.5 | |
| 379. |
In a compaction test, as the compaction effort is increased, the optimum moisture content |
| A. | decreases |
| B. | remains same |
| C. | increases |
| D. | increases first and thereafter decreases |
| Answer» B. remains same | |
| 380. |
If the pump head is 75 m, discharge is 0.464 m3/s and the motor speed is 1440 rpm at rated condition, the specific speed of the pump is about |
| A. | 4 |
| B. | 26 |
| C. | 38 |
| D. | 1440 |
| Answer» D. 1440 | |
| 381. |
Maximum size of a fillet weld for a plate of square edge is |
| A. | 1.5 mm less than the thickness of the plate |
| B. | one half of the thickness of the plate |
| C. | thickness of the plate itself |
| D. | 1.5 mm more than the thickness of the plate |
| Answer» B. one half of the thickness of the plate | |
| 382. |
At the same mean velocity, the ratio of head loss per unit length for a sewer pipe flowing full to that for the same pipe flowing half full would be : |
| A. | 2 |
| B. | 1.63 |
| C. | 1 |
| D. | 0.61 |
| Answer» C. 1 | |
| 383. |
In a steady radial flow into an intake, the velocity is found to vary as (1/r2), where r is the radial distance. The acceleration of the flow is proportional to |
| A. | 1/r5 |
| B. | 1/r3 |
| C. | 1/r4 |
| D. | 1/r |
| Answer» B. 1/r3 | |
| 384. |
The Prandtl mixing length for turbulent flow through pipes is |
| A. | independent of shear stress |
| B. | a universal constant |
| C. | zero at the pipe wall |
| D. | independent of radial distance from pipe axis |
| Answer» B. a universal constant | |
| 385. |
A prestressed concrete rectangular beam of size 300 mm x 900 mm is prestressed with an initial prestressing force of 700 kN at an eccentricity of 350 mm at midspan. Stress at top of the beam due to prestress alone, in N/mm2 is |
| A. | 46 (tension) |
| B. | 2.59 (compression) |
| C. | zero |
| D. | 8.64 (compression) |
| Answer» B. 2.59 (compression) | |
| 386. |
The number of simultaneous equations to be solved in the slope deflection method, is equal to : |
| A. | the degree of statical indeterminacy |
| B. | the degree of kinematic indeterminacy |
| C. | the number of joints in the structure |
| D. | none of the above |
| Answer» D. none of the above | |