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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.
| 501. |
Which one of the following is the correct statement ? A streamlined body is one for which the |
| A. | skin friction is zero. |
| B. | thickness of the body is less than 1/100 of its length |
| C. | corners are rounded off. |
| D. | separation occurs, if at all, at the farthest downstream part of the body. |
| Answer» E. | |
| 502. |
If the stream function ψ = 3x2 - y3, what is the magnitude of velocity at point (2, 2) ? |
| A. | 9 |
| B. | 13 |
| C. | 15 |
| D. | 17 |
| Answer» E. | |
| 503. |
Which one of the following expresses the height of rise or fall of a liquid in a capillary tube ?(w = Specific weight of the liquid α = Angle of contact of the liquid surface σ = Surface tension) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 504. |
When power shovels are operated under different site conditions (in terms of material handled), what is the correct sequence in the increasing order of the ouput for the following materials ?1. Well - blasted rock2. Hard and tough clay3. Poorly blasted rock4. Moist loam or sandSelect the correct answer using the code given below : |
| A. | 1 - 2 - 3 - 4 |
| B. | 1 - 4 - 3 - 2 |
| C. | 4 - 2 - 3 - 1 |
| D. | 4 - 3 - 1 - 2 |
| Answer» D. 4 - 3 - 1 - 2 | |
| 505. |
Which one of the following shovel excavators is considered most efficient in loading carriers ? |
| A. | Dipper shovel |
| B. | Dragline |
| C. | Backhoe |
| D. | Clamshell |
| Answer» D. Clamshell | |
| 506. |
What are the bending moments at the ends A and B of a uniform beam AB fixed in direction and position at A and B when acted upon by two concentrated loads at l/3rd span as shown in the figure ? |
| A. | 2/9 WL |
| B. | 4/9 WL |
| C. | 6/9 WL |
| D. | 8/9 WL |
| Answer» B. 4/9 WL | |
| 507. |
Ultimate strength of cement is influenced by which one of the following ? |
| A. | Tricalcium silicate |
| B. | Dicalcium silicate |
| C. | Tricalcium aluminate |
| D. | Tetracalcium alumino-ferrite |
| Answer» C. Tricalcium aluminate | |
| 508. |
What is the time by which the completion of an activity can be delayed without affecting the start of succeeding activities, called ? |
| A. | Total float |
| B. | Interfering float |
| C. | Independent float |
| D. | Free float |
| Answer» E. | |
| 509. |
The optimistic, most likely and pessimistic time estimates of an activity are 5, 10 and 21 days respectively. What are the expected time and standard deviation ? |
| A. | 12, 3 |
| B. | 11, 4 |
| C. | 11, |
| D. | 10, 16 |
| Answer» D. 10, 16 | |
| 510. |
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 10-6 /° C and modulus of elasticity is 200 x 103 MN/m2, what is the stress in the rod ? |
| A. | 20 MN/m2 |
| B. | 40 MN/m2 |
| C. | 60 MN/m2 |
| D. | 80 MN/m2 |
| Answer» D. 80 MN/m2 | |
| 511. |
A close-coiled helical spring with n coils, mean radius R and diameter d is subjected to an axial load W. What is the compression in the spring ? |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 512. |
What are the magnitudes of horizontal and vertical support reactions, respectively at support. A of the frame shown in figure below ? |
| A. | 16 kN, 18 kN |
| B. | 16 kN, 6 kN |
| C. | 6 kN, 16 kN |
| D. | 8 kN, 6 kN |
| Answer» C. 6 kN, 16 kN | |
| 513. |
What is the magnitude of the force in the member BD in the figure given above ? |
| A. | 5 kN |
| B. | 7 kN (App) |
| C. | 42kN |
| D. | Zero |
| Answer» E. | |
| 514. |
What is the inclination of resultant reactions at A with the vertical for the frame shown in the given figure ? |
| A. | 60° |
| B. | 40° |
| C. | 30° |
| D. | 50° |
| Answer» D. 50° | |
| 515. |
Two shafts of same material and same length are connected in series and subjected to a torque 'T' as shown in the given figure. If , what is the value of the ratio ? (Where τ1 and τ2 are the extreme shear stresses in either of two segments) |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 16 |
| Answer» D. 16 | |
| 516. |
Which is the best sewer material to resist hydrogen sulphide corrosion ? |
| A. | Glazed stone ware |
| B. | Glazed earthen ware |
| C. | R.C.C. |
| D. | Brick masonry |
| Answer» B. Glazed earthen ware | |
| 517. |
What is the zone where fish life might tend to progressively dwindle when waste water, is discharged into a river, called ? |
| A. | zone of degradation |
| B. | zone of active decomporsition |
| C. | zone of mixing |
| D. | zone of recovery |
| Answer» C. zone of mixing | |
| 518. |
In a PERT network, the activity durations are given as to (optimistic), tp (pessimistic) and tm (most likely time). What is the variance of is activity ? |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | None of the above |
| Answer» D. None of the above | |
| 519. |
A 12 kg mass rests on a surface for which the coefficient of friction is μ= 0.15. What is the smallest force that can give the mass acceleration of 3 m/s2 ? (Take g = 10 m/s2). |
| A. | 120 N |
| B. | 100 N |
| C. | 65 N |
| D. | 54 N |
| Answer» C. 65 N | |
| 520. |
The given diagrams show the details of two simply supported beams B1 and B2. EI is constant throughout the length and same for both the beams. The beams have the same area of cross-section and the same depth. What is the ratio of maximum bending stress in B2 to that in B1 ? |
| A. | 4 |
| B. | 1 |
| C. | 2 |
| D. | [D]. |
| Answer» E. | |
| 521. |
A bar of length l is uniformly tapering from a diameter d1 at one and to a diameter d2 at the other end. The bar is subjected to an axial tensile loads. What is the total elongation (where E = Young's modulus of elasticity. ) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | 4 + |
| Answer» B. [B]. | |
| 522. |
For a laminated spring, l = length, n = number of plates, width of each plate = b, thickness of each plate = t, central point load = W, what is the expression for the maximum bending stores ? |
| A. | * 2 |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 523. |
A propped cantilever is acted upon by a moment M0 at the propped end, what is the prop reaction ? |
| A. | 0.5 M0 |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 524. |
What is the maximum bending moment at mid-span of the beam given below ? |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 525. |
In a three-dimensional incompressible flow, the velocity component in the X and Y directions are u = 2x2 + z2 + 6 and v = y2 + 2z2 + 7. What is the velocity component in the z-direction ? |
| A. | 2xz + 2yz + f(x, y) |
| B. | 2xz + 4yz + f(x, y) |
| C. | 4xz + 2yz + f(x, y) |
| D. | - 4xz - 2yz + f(x, y) |
| Answer» E. | |
| 526. |
If the velocity potential φ = 4 xy, what are the x and y components of velocity at the point(1, 4) ? |
| A. | u = - 16, v = - 4 |
| B. | u = - 4, v = - 16 |
| C. | u = 16, v = - 4 |
| D. | u = 16, v = 16 |
| Answer» B. u = - 4, v = - 16 | |
| 527. |
Which one of the following, measures the stiffness of a track ? |
| A. | Tractive effort |
| B. | Tractive resistance |
| C. | Track modulus |
| D. | Load capacity |
| Answer» D. Load capacity | |
| 528. |
Which of the following are the purposes for use of steel bars reinforcement in cement concrete pavements ?1. To increase the flexural strength of concrete2. To prevent the onset of cracks3. To allow wider spacing of joints.Select the correct answer using the code given below : |
| A. | 1 and 2 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 |
| Answer» C. 1 and 3 only | |
| 529. |
If the width of a carriageway is 5.5 m, then what is it called ? |
| A. | Single lane |
| B. | two lanes |
| C. | intermediate lane |
| D. | Multi-lane |
| Answer» D. Multi-lane | |
| 530. |
Which one of the following represents the basic capacity of a single lane road?(where V = speed in kmph, s = Average centre to centre spacing of vehicle in m, h = Average time headway between two vehicles in seconds.) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 531. |
In a hydraulic jump occurring in a horizontal rectangular channel, the sequent depths are 0.3 m and 1.2 m. What is the approximate value of energy loss in the jump ? |
| A. | 1.5 m |
| B. | 0.9 m |
| C. | 0.5 m |
| D. | 0.35 m |
| Answer» D. 0.35 m | |
| 532. |
In drawing AOA networks and making time computations, the following processes are involved :1. Activity listing2. Work breakdown structure3. Activity time allotment4. Consideration of available resources for each activity5. Activity dependencies6. Float computations7. Backward path computation8. Project duration9. Forward path computationWhat is the correct sequence of the processes given above ? |
| A. | 1, 2, 4, 3, 9, 7, 5, 6, 8 |
| B. | 2, 1, 4, 3, 5, 9, 8, 7, 6 |
| C. | 4, 1, 3, 2, 9, 5, 7, 8, 6 |
| D. | Any sequence can be followed but 6 and 7 will be the last two ones |
| Answer» B. 2, 1, 4, 3, 5, 9, 8, 7, 6 | |
| 533. |
Why is a proportional flow weir provided in a grit chamber ? |
| A. | To reduce the suspended solids entering into the grit chamber |
| B. | To maintain the constant flow depth in the grit chamber |
| C. | To take care of maintaining constant flow velocity in the grit chamber over a certain depth range |
| D. | To allow the sewage afresh into the grit chamber |
| Answer» D. To allow the sewage afresh into the grit chamber | |
| 534. |
What is the BOD5 at 20°C of a waste that yields an oxygen consumption of 2 mg/l from a 0.5% diluted sample ? |
| A. | 50 mg/l |
| B. | 400 mg/l |
| C. | 200 mgl |
| D. | 250 mgl |
| Answer» C. 200 mgl | |
| 535. |
Which one of the following is not biodegradable organic matter ? |
| A. | Carbohydrates |
| B. | Fats |
| C. | Alcohols |
| D. | Petrol |
| Answer» E. | |
| 536. |
Which one of the following is the appropriate field test for estimating the angle of shearing resistance φ of a sand deposit ? |
| A. | Field vane shear test |
| B. | Plate load test |
| C. | Standard penetration test |
| D. | Electrical resistivity test |
| Answer» D. Electrical resistivity test | |
| 537. |
Consider the following statements :1. In the laboratory consolidation test, initial compression is the result of displacement of soil particles.2. Primary consolidation is due to dissipation of pore water pressure.3. Secondary compression starts after complete dissipation of pore water pressure.4. Primary consolidation and secondary compression occur simultaneously.Which of the statements given above are correct ? |
| A. | 1 and 4 only |
| B. | 2 and 3 only |
| C. | 2 and 4 only |
| D. | 1 and 3 only |
| Answer» D. 1 and 3 only | |
| 538. |
In the cross-section of a rectangular beam, what is the ratio of the average shear stress to the maximum shear stress ? |
| A. | 3/2 |
| B. | 2/3 |
| C. | 4/3 |
| D. | 3/4 |
| Answer» C. 4/3 | |
| 539. |
A cantilever beam of span l carries a uniformly varying load of zero intensity at the free end and w per metre length at the fixed end. What does the integration of the ordinate of the load diagram between the limits of free and fixed ends of the beam give ? |
| A. | Bending moment at the fixed end |
| B. | Shear force at the fixed end |
| C. | Bending moment at the free end |
| D. | Shear force at the free end |
| Answer» B. Shear force at the fixed end | |
| 540. |
A shot of mass m penetrates a thickness t of a fixed plate of mass M. If the plate were free to move and the resistance supposed to be uniform, which one of the following is the thickness penetrated ? |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 541. |
The acceleration of a particle starting from rest varies with time according to the relation a = - sω2 sin ωtWhat is the displacement of this particle at a time t ? |
| A. | s sin ωt |
| B. | sω cos ωt |
| C. | sω sin ωt |
| D. | - 1/2 (sω2 sin ωt)t2 |
| Answer» B. sω cos ωt | |
| 542. |
If the magnitude of the resultant of two forces F and 2F acting at a point O is 50 N, and the included angle between F and 2F is 90°, then what is the magnitude of F ? |
| A. | F = 10 N |
| B. | F = 502 N |
| C. | F = 252 N |
| D. | F = 105 N |
| Answer» E. | |
| 543. |
Two forces P = 6 N and Q = 10 N act on a particle and their lines of action are inclined to each other at an angle of 60°. What is the magnitude of the third force R which will keep the particle in equilibrium ? |
| A. | 13.30 N |
| B. | 13.89 N |
| C. | 14.00 N |
| D. | 14.02 N |
| Answer» D. 14.02 N | |
| 544. |
Mercury (density = 13600 kg/m3, σ = 0.49N/mm internal diameter open-ended capillary tube is inserted in the middle of the beaker into the mercury. The meniscus in the tube will be below the external mercury surface by how much distance? |
| A. | 4.2 mm |
| B. | 5.7 mm |
| C. | 6.8 mm |
| D. | 7.3 mm |
| Answer» E. | |
| 545. |
Which one of the following represents the correct relationship between seepage pressure (ps), unit weight of water (γω) and hydraulic gradient (i), inside an earth dam ? |
| A. | ps = i/γω |
| B. | ps = i.γω |
| C. | ps = i2.γω |
| D. | ps = γω/i |
| Answer» C. ps = i2.γω | |
| 546. |
When a single point load W travels over a simply supported beam, what is shape of the graph for maximum positive or negative shear force ? |
| A. | A triangle with maximum ordinate W at centre and zero at two simple supports |
| B. | A triangle with maximum ordinate W at a support |
| C. | A rectangle with ordinate W |
| D. | A parabola with maximum ordinate W at centre of span and zero at supports |
| Answer» B. A triangle with maximum ordinate W at a support | |
| 547. |
Due to settlement of support at A of propped cantilever shown in the figure given below, what is the vertical reaction at B ? |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 548. |
A symmetrical circular arch of span 25 m with a central rise of 5 is hinged at crown and springings. It carries a point load on the arch in the span between the left hinge and central hinge. If the inclination of the thrust at the right hinge is θ measured from horizontal, then what is the value of tan θ ? |
| A. | 2.5 |
| B. | 1 |
| C. | 0.4 |
| D. | Not possible to calculate with given data |
| Answer» D. Not possible to calculate with given data | |
| 549. |
In the plane truss shown above, how many numbers have zero force? |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 9 |
| Answer» D. 9 | |
| 550. |
What is 5 days 20°C BOD equal to ? |
| A. | 3 days 27°C BOD |
| B. | 4 days 30°C BOD |
| C. | 6 days 32°C BOD |
| D. | 7 days 35°C BOD |
| Answer» B. 4 days 30°C BOD | |