MCQOPTIONS
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MCQOPTIONS
This section includes 1888 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
The bending moment diagram for an overhanging beam is shown in the given figure :The points of contraflexure would include |
| A. | and |
| B. | and |
| C. | and |
| D. | and |
| Answer» C. and | |
| 452. |
A mild steel bar is 40 cm long. The lengths of parts and of the bar are 20 cm each. It is loaded as shown in the given figure. The ratio of the stresses, σ in part to σ in part is |
| A. | 2 |
| B. | 1/2 |
| C. | 4 |
| D. | 1/4 |
| Answer» C. 4 | |
| 453. |
A mild steel bar of square cross-section 40 mm x 40 mm is 400 mm long. It is subjected to a longitudinal tensile stress of 440 N/mm and lateral compressive stress is 200 N/mm in perpendicular directions. = 2 x 10 N/mm, μ = 0.3. What is the approximate elongation of tht bar in the longitudinal direction ? |
| A. | 0.44 mm |
| B. | 088 mm |
| C. | 0.22 mm |
| D. | 1 mm |
| Answer» E. | |
| 454. |
Which one of the following statements is NOT correct ? |
| A. | In combined sewerage system, one set of sewers is laid for both sanitary sewage and storm water. |
| B. | In separate system, the design of sewage system is economical |
| C. | In separate system, self cleaning velocities are not available and occasional flushing is required. |
| D. | As the sewage is diluted by storm water in combined sewage system, cost of treatment is low. |
| Answer» D. As the sewage is diluted by storm water in combined sewage system, cost of treatment is low. | |
| 455. |
Consider the following statements regarding base-line measurements :1. Very precise measurement can be done only on densely cloudy days or at nights.2. Error due to application of non-standardised pull on the tape can be either cumulative or compensating type.3. Intermediate obstructions in the measurement of base-lines can be cleared by erecting towers.Of these statements : |
| A. | 1, 2 and 3 are correct |
| B. | 1 and 2 are correct |
| C. | 1 and 3 are correct |
| D. | 2 and 3 are correct |
| Answer» D. 2 and 3 are correct | |
| 456. |
Consider the following statements :1. In a fluid under motion, the pressure at a point is always perpendicular to the surface.2. Pascal's law states that the pressure at a point is same in all directions.3. Magnitude of pressure of a fluid at a point is obtained from hydrostatic law.4. Pascal's law is applicable in the operation of a hydraulic press.Which of these statements are correct ? |
| A. | 1, 2 and 3 |
| B. | 1, 3 and 4 |
| C. | 1, 2 and 4 |
| D. | 2, 3 and 4 |
| Answer» E. | |
| 457. |
Consider the following factors :1. Air traffic control measures2. Aircraft traffic composition3. VFR/IFR operation4. Runway configurationWhich of these factors affect the capacity of a runway ? |
| A. | 1, 2 and 3 |
| B. | 2 and 3 |
| C. | 1 and 4 |
| D. | 1, 2, 3 and 4 |
| Answer» D. 1, 2, 3 and 4 | |
| 458. |
Consider the following statements relating to hydraulic gradient line and energy gradient line1. In the case of a fluid flowing in a pipeline, hydraulic gradient line and energy gradient line may coincide.2. The line joining the points representing piezometric heads is known as hydraulic gradient line.3. In the case of ideal fluid, energy gradient line is always horizontal.4. Hydraulic gradient line has a downward slope in the case of flow through pipes.Of these statements : |
| A. | 1, 2 and 3 are correct |
| B. | 1, 3 and 4 are correct |
| C. | 2, 3 and 4 are correct |
| D. | 1, 2 and 4 are correct |
| Answer» D. 1, 2 and 4 are correct | |
| 459. |
Given for a soil sample :Degree of saturation = 90%Specific gravity of soil grains = 2.70Void ratio = 0.30The water content of the sample is |
| A. | 10% |
| B. | 13.5% |
| C. | 22.5% |
| D. | 35% |
| Answer» B. 13.5% | |
| 460. |
A bed of sand consists of three horizontal layers of equal thickness. The value of Darcy's k for the upper and lower layers is 1 x 10 cm/sec and that for the middle layer is 1 x 10 cm/sec. The ratio of the permeability of the bed in the horizontal direction to that in the vertical direction is |
| A. | 10.0 to 1 |
| B. | 2.8 to 1 |
| C. | 2.0 to 1 |
| D. | 1 to 10 |
| Answer» C. 2.0 to 1 | |
| 461. |
The effective depth of a singly reinforced rectangular beam is 30 cm. The section is over-rein-forced and the neutral axis is 12 cm below the top. If the maximum stress attained by concrete is 50 kg/cm and the modular ratio is 18, then the stress developed in steel would be |
| A. | 1800 kg/cm |
| B. | 1600 kg/cm |
| C. | 1350 kg/cm |
| D. | 1300 kg/cm |
| Answer» E. | |
| 462. |
Which of the following treatments reduce salinity of water1. Flash mixing and sedimentation2. Electrodialysis3. Reverse osmosis4. Freezing5. FiltrationSelect the correct answer using the codes given below: |
| A. | 1, 2, 3, 4 and 5 |
| B. | 2, 3 and 4 |
| C. | 1, 3 and 5 |
| D. | 1, 2 and 4 |
| Answer» C. 1, 3 and 5 | |
| 463. |
A concentrated load moves on the span of a three-hinged arch. The horizontal thrust at the supports is maximum when the load is at which one of the following ? |
| A. | The springing |
| B. | One-sixth of the span from one end |
| C. | Quarter span |
| D. | The crown |
| Answer» E. | |
| 464. |
A sample of ground water at a pH of 7.0 contains 122 mg/l of bicarbonates. What is the alkalinity of this water (in terms of CaC0 ) ? |
| A. | 120 mg/1 |
| B. | 60 mg/1 |
| C. | 100 mg/1 |
| D. | 200 mg/l |
| Answer» D. 200 mg/l | |
| 465. |
Consider the following statements in regard to aerobic and anaerobic treatment processes :1. Biomass production in the aerobic treatment process is more as compared to the anaerobic treatment process.2. Start-up period is more in the aerobic treatment process as compared to the anaerobic treatment process.3. Energy consumption and production is more in the aerobic treatment process as compared to the anaerobic treatment process.Which of the statements given above is/are correct ? |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | only 2 |
| D. | only 1 |
| Answer» E. | |
| 466. |
Earth pressure and resultant possibilities of wall movement are shown in the given diagram. The point marked '' in the diagram denotes |
| A. | earth pressure.at rest |
| B. | active earth pressure |
| C. | arching active pressure |
| D. | passive earth pressure |
| Answer» E. | |
| 467. |
Consider the following statements :For the -girder shown in the given figure, ILD for force in the member, is obtained by1. multiplying the ordinate of ILD for shear in the panel , by sec θ.2. dividing the ordinate of ILD for moment at by cos θ x 3. dividing the ordinate of ILD for moment at by Of these statements : |
| A. | only 3 is correct |
| B. | 1 and 3 are correct |
| C. | 1 and 2 are correct |
| D. | 1, 2 and 3 are correct |
| Answer» B. 1 and 3 are correct | |
| 468. |
Consider the following systems :1. Trusses and purlins2. Suspension system3. Flat grid roof 4. ShellsWhen these are used in single deck industrial structures, the correct sequence in increasing order of spans will be |
| A. | 3, 1, 2, 4 |
| B. | 1, 3, 2, 4 |
| C. | 3, 1, 4, 2 |
| D. | 2, 4, 1, 3 |
| Answer» B. 1, 3, 2, 4 | |
| 469. |
Consider for following statements :In an under-reinforced concrete beam, 1. actual depth of neutral axis is less than the critical depth of neutral axis.2. concrete reaches ultimate stress prior to steel reaching the ultimate stress.3. moment of resistance is less than that of balanced sections.4. lever arm of resisting couple is less than that of balanced sections.Which of the statements given above are correct ? |
| A. | 1 and 2 |
| B. | 1 and 3 |
| C. | 2, 3 and 4 |
| D. | 1 and 4 |
| Answer» C. 2, 3 and 4 | |
| 470. |
A steel rod, 100 mm long is held between two rigid supports. It is heated by 20°C. If the coefficient of thermal expansion of the material of the rod is 15 x 10 /° C and modulus of elasticity is 200 x 10 MN/m, what is the stress in the rod ? |
| A. | 20 MN/m |
| B. | 40 MN/m |
| C. | 60 MN/m |
| D. | 80 MN/m |
| Answer» D. 80 MN/m | |
| 471. |
Which type of light energy is effectively absorbed by CO in the lower boundary of the troposphere ? |
| A. | X - rays |
| B. | UV - rays |
| C. | Visible light |
| D. | Infra-red rays |
| Answer» E. | |
| 472. |
Consider the following statements :Sand in mortar is needed for1. decreasing the quantity of cement.2. reducing shrinkage.3. decreasing the surface area of the binding material.4. increasing the strength.Of these statements : |
| A. | 2, 3 and 4 are correct |
| B. | 1, 2 and 3 are correct |
| C. | 1, 3 and 4 are correct |
| D. | 1, 2 and 4 are correct |
| Answer» E. | |
| 473. |
Consider the following strengths of concrete :1. Cube strength2. Cylinder strength3. Split-tensile strength4. Modulus of ruptureThe correct sequence in decreasing order of these strengths is |
| A. | 3, 4, 2, 1 |
| B. | 3, 4, 1, 2 |
| C. | 4, 3, 2, 1 |
| D. | 4, 3, 1, 2 |
| Answer» E. | |
| 474. |
If the pressure carried by a CBR specimen at 2.5 mm penetration is 3.5 N/mm, the CBR of the soil is |
| A. | 10% |
| B. | 35% |
| C. | 50% |
| D. | 70% |
| Answer» D. 70% | |
| 475. |
For designing end bearing piles of square cross-section in clays having average unconfmed compressive strength of 6 t/m, the net ultimate bearing capacity may be taken as |
| A. | 15 t/m |
| B. | 18 t/m |
| C. | 20 t/m |
| D. | 27 t/m |
| Answer» C. 20 t/m | |
| 476. |
The side of the square block as shown in the given figure is fixed at the base and it is under a state of simple shear causing shear stress τ and shear strain π, where The distorted shape is . The diagonal strain (linear) will be |
| A. | φ |
| B. | φ |
| Answer» B. φ | |
| 477. |
Consider the following statements :Collision diagram is used to1. study accident pattern2. eliminate accidents3. determine remedial measures4. make statistical analysis of accidentsOf these statements : |
| A. | 1 and 2 are correct |
| B. | 1 and 3 are correct |
| C. | 3 and 4 are correct |
| D. | 2 and 4 are correct |
| Answer» E. | |
| 478. |
Consider the following statements :1. An ascending gradient of 1 in 100 meets an ascending gradient of 1 in 120 to form a Valley curve.2. A falling gradient of 1 in 25 meets a falling gradient of 1 in 50 to form a summit curve.3. The length of summit curve is determined on the basis of head light sight distance.Which one of the statements given above is/are correct ? |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | 2 only |
| Answer» C. 1 and 3 | |
| 479. |
In a PERT network, the activity durations are given as (optimistic), (pessimistic) and (most likely time). What is the variance of is activity ? |
| A. | None of the above |
| Answer» D. | |
| 480. |
A bar of circular cross-section of diameter is subjected to a torque at as shown in the figure given. What is the angle of twist at ? |
| A. | Same as that at B |
| B. | Zero |
| C. | Twice as that at B |
| D. | Half as that at B |
| Answer» B. Zero | |
| 481. |
Consider the following statements regarding Plane Table surveying : 1. It is less accurate than chain surveying. 2. It is not necessary to do accurate centering of plane table for small scale survey.3. Compass rule may be made use for adjusting the plane table transverse.4. From the instrument station, resectors are drawn to plot the position of object in the field. Of these statements : |
| A. | 1, 2 and 4 are correct |
| B. | 2, 3 and 4 are correct |
| C. | 1, 2 and 3 are correct |
| D. | 1, 3 and 4 are correct |
| Answer» B. 2, 3 and 4 are correct | |
| 482. |
A cold drawn seamless steel tubing subject to internal pressure, has a diameter of 6 cm and wall thickness of 0.2 cm. The ultimate strength of steel is 3600 kg/cm. The bursting pressure (in kg/cm) is |
| A. | 120 |
| B. | 240 |
| C. | 480 |
| D. | 960 |
| Answer» C. 480 | |
| 483. |
Which of the following factors are associated with the behaviour of sand mass during earthquake to cause liquefaction ?1. Number of stress cycles2. The frequency, and amplitude of vibration of waves generated by an earthquake3. Characteristics of sand4. Relative densitySelect the correct answer using the codes given below : |
| A. | 1, 2 and 3 |
| B. | 1, 2, 3 and 4 |
| C. | 2 and 4 |
| D. | 3 and 4 |
| Answer» C. 2 and 4 | |
| 484. |
The figure refers to a channel section of uniform thickness of 1 cm used as a beam with the cross-sectional dimensions shown in cm units. If the Moment of Inertia of channel be equal to 246 cm and be the shear centre, then the value of in cm is equal to |
| A. | 1.5 |
| B. | 2.5 |
| C. | 2.25 |
| D. | 1.67 |
| Answer» B. 2.5 | |
| 485. |
In the force system shown in the figure, the force should be |
| A. | 5 |
| B. | - 5 |
| C. | 4 |
| D. | - 4 |
| Answer» B. - 5 | |
| 486. |
A cylindrical shell made of mild steel plate of 100 cm diameter is to be subjected to an internal pressure of 10 kg/cm. If the material yields at 2000 kg/cm, assuming factor of safety as four and using maximum principal stress theory, thickness of the plate will be |
| A. | 5 mm |
| B. | 10 mm |
| C. | 15 mm |
| D. | 20 mm |
| Answer» C. 15 mm | |
| 487. |
The plastic modulus of a section is 5 x 10m. Its shape factor is 1.2 and the plastic moment capacity is 120 kNm. What is the value of the yield stress of the material ? |
| A. | 100 N/mm |
| B. | 200 N/mm |
| C. | 240 N/mm |
| D. | 288 N/mm |
| Answer» D. 288 N/mm | |
| 488. |
The absolute maximum Bending Moment in a simply supported beam of span 20 m due to moving of 4 t/m spanning over 5 m is |
| A. | 87.5 t-m at the support |
| B. | 87.5 t-m near the midpoint |
| C. | 3.5 t-m at the midpoint |
| D. | 87.5 t-m at the midpoint |
| Answer» E. | |
| 489. |
The following steps are involved in making a spigot and socket joint of cast iron pipes used in water supply systems :1. Tarred gasket or hemp yarn in wrapped around the spigot.2. The sipgot end is centered into the socket end of the preceding pipe.3. A joining ring end is placed around the barrel and against the face of the socket.4. The gasket or hemp yarn in caulked slightly.5. Molten pig lead is poured and then caulked.The correct sequence of these steps is |
| A. | 2, 1, 4, 3, 5 |
| B. | 2, 1, 3, 4, 5 |
| C. | 1, 2, 4, 5, 3 |
| D. | 1, 2, 3, 5, 4 |
| Answer» D. 1, 2, 3, 5, 4 | |
| 490. |
Consider the following methods of preservation of timber :1. Dipping2. Brushing or spraying3. Pressure impregnationThe correct sequence in decreasing order of the effectiveness of these methods of preservation is |
| A. | 1, 2, 3 |
| B. | 2, 1, 3 |
| C. | 3, 1, 2 |
| D. | 3, 2, 1 |
| Answer» D. 3, 2, 1 | |
| 491. |
The following steps are involved in laying a sewer in a trench :1. Transferring the center line of the sewer to the bottom trench.2. Setting sight rails over the trench.3. Driving pegs to the level of the invert line of the sewer.4. Placing the sewer of these steps is The correct sequence of these steps is |
| A. | 1, 2, 3, 4 |
| B. | 2, 3, 4, 1 |
| C. | 4, 2, 3, 1 |
| D. | 2, 3, 1, 4 |
| Answer» E. | |
| 492. |
A horizontal rod carries three loads of 3.0 kg, 7.0 kg and 10.0 kg at distances of 2.0 cm, 9.0 cm and 15 cm respectively from where it is hinged. Neglecting the weight of the rod, which is the point at which the rod will be balance ? |
| A. | 10.95 cm form |
| B. | 11.25 cm from |
| C. | 12.55 cm from |
| D. | 13.25 cm form |
| Answer» B. 11.25 cm from | |
| 493. |
Two simply supported beams and have spans and 2 respectively. Beam has a cross-section of 1 x 1 units and beam has a cross-section of 2 x 2 units. These beams are subjected to concentrated loads each at the centre of their spans. The ratio of the maximum flexural stress in these beams is |
| A. | 4 |
| B. | 2 |
| Answer» B. 2 | |
| 494. |
What is the steepest gradient permissible on a 2° curve for B.G. line having using gradient of 1 in 200 ? |
| A. | 1 in 250 |
| B. | 1 in 238 |
| C. | 1 in 209 |
| D. | 1 in 198 |
| Answer» C. 1 in 209 | |
| 495. |
A sailor, standing on the deck of a ship, just sees the light beam from a lighthouse on the shore. If the height of the sailor's eye and of the light beam at the lighthouse, above the sea level, are 9 m and 25 m respectively, what is the distance between the sailor and the lighthouse ? |
| A. | 29.8 km |
| B. | 31.1 km |
| C. | 31.9 km |
| D. | 33.2 km |
| Answer» C. 31.9 km | |
| 496. |
If the mean temperature of Sun's surface 6000 K and λm of its radiation is 0.5 what is the mean temperature of earth surface for which λm is 10.0 μm, according to Wien's Displacement Law in Remote Seniror Concept ? |
| A. | 25 °C |
| B. | 28 °C |
| C. | 27 °C |
| D. | 30 °C |
| Answer» D. 30 °C | |
| 497. |
Why are weep holes provided at the back of retaining walls ? |
| A. | To reduce the active earth pressure on the walls |
| B. | To reduce the build - up of hydrostatic pressure |
| C. | To provide better compaction |
| D. | To increase the passive earth pressure |
| Answer» C. To provide better compaction | |
| 498. |
There are ten instrument staions occupied in succession during a traverse survey. An observer makes equal error in each station, the magnitude of which is δ θ in each instance at all the stations. What is the probable error of the final bearing at the end of the traverse ? |
| A. | ± 10 δ θ |
| B. | ± 100(δ θ)2 |
| C. | ± 10 (δ θ) |
| D. | ± l0 δ θ |
| Answer» E. | |
| 499. |
Which one of the following treatments is economically effective in the control of guinea worm disease ? |
| A. | Chlorination |
| B. | Filtration |
| C. | Ozonation |
| D. | Sedimentation |
| Answer» C. Ozonation | |
| 500. |
Flow happens at a critical depth of 0.5 m in a rectangular channel of 4 m width. What is the value of discharge ? |
| A. | 5.4 m3/s |
| B. | 5.1 m3/s |
| C. | 4.9 m3/s |
| D. | 4.4 m3/s |
| Answer» E. | |