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.
| 1. |
A borrow pit soil has a dry density of 17 kN/m. How many cubic meters of this soil will be required to construct an embankment of 100 m volume with a dry density of 16 kN/m. |
| A. | 94 m |
| B. | 106 m |
| C. | 100 m |
| D. | 90 m |
| Answer» B. 106 m | |
| 2. |
The ultimate bearing capacity of a soil is 300 kN/m. The depth of foundation is 1 m and unit weight of soil is 20 kN/m. Choosing a factor of safety of 2.5, the net safe bearing cacpacity is |
| A. | 100 kN/m |
| B. | 112 kN/m |
| C. | 800 kN/m |
| D. | 100.5 kN/m |
| Answer» E. | |
| 3. |
The flow of water (mass density = 1000 kg/m and kinematic viscosity = 10 m/s) in a commercial pipe, having equivalent roughness as 0.12 mm, yields an average shear stress at the pipe boundary = 600 N/m. The value of /δ' (δ' being the thickness of laminar sub-layer) for this pipe is |
| A. | 0.25 |
| B. | 0.50 |
| C. | 6.0 |
| D. | 8.0 |
| Answer» E. | |
| 4. |
Water flows at a rate of 10 m/s in a rectangular channel 3 m wide. The critical depth of flow is |
| A. | 1.13 m |
| B. | 2 m |
| C. | 1.45 m |
| D. | 1.04 m |
| Answer» E. | |
| 5. |
The span () to be loaded uniformly for maximum positive (upward) reaction at support , as shown in the figure below, is (are) |
| A. | only |
| B. | and |
| C. | and |
| D. | and |
| Answer» E. | |
| 6. |
The deflection of a cantilever beam at free end applied with a moment at the same point is : |
| A. | / |
| B. | /2 |
| C. | /3 |
| D. | /4 |
| Answer» C. /3 | |
| 7. |
A circular sewer 2 m diameter has to carry a discharge of 2 m/s when flowing nearly full. What is the minmum required slope to initiate the flow ? (Assume Manning's = 0.015) |
| A. | 0.00023 |
| B. | 0.000036 |
| C. | 0.000091 |
| D. | 0.000014 |
| Answer» D. 0.000014 | |
| 8. |
For a highway with design speed of 100 kmph, the safe overtaking sight distance is (assume accelerations as 0.53 m/sec) |
| A. | 300 m |
| B. | 750 m |
| C. | 320 m |
| D. | 470 m |
| Answer» C. 320 m | |
| 9. |
An isolated beam is used as a walkway. The beam is simply supported with an effective span of 6 m. The effective width of flange, for the cross-section shown in the below figure is |
| A. | 900 mm |
| B. | 1000 mm |
| C. | 1259 mm |
| D. | 2200 mm |
| Answer» B. 1000 mm | |
| 10. |
The stress-strain diagram for two materials A and B is shown below. The following statements are made based on this diagram : 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. | |
| 11. |
The relationship between the length () and radius () of an ideal transition curve is given by |
| A. | ∝ |
| B. | ∝ |
| C. | ∝ 1/ |
| D. | ∝ 1/ |
| Answer» D. ∝ 1/ | |
| 12. |
The width of expansion joint gap is 2.5 cm in a cement concrete pavement. The spacing between expansion joints for a maximum rise in temperature of 25°C is, (assuming coefficient of thermal expansion of concrete as 10 x 10 per degree C), |
| A. | 5 m |
| B. | 50 m |
| C. | 100 m |
| D. | 25 M |
| Answer» B. 50 m | |
| 13. |
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/mm is |
| A. | 46 (tension) |
| B. | 2.59 (compression) |
| C. | zero |
| D. | 8.64 (compression) |
| Answer» B. 2.59 (compression) | |
| 14. |
A pile of 0.50 m diameter and of length 10 m is embedded in a deposit of clay. The un-drained strength parameters of the clay are cohesion = 60 kN/m and the angle in internal friction = 0. The skin friction capacity (kN) of the pile for an adhesion factor of 0.6, is |
| A. | 671 |
| B. | 565 |
| C. | 283 |
| D. | 106 |
| Answer» C. 283 | |
| 15. |
A frame ABCD is supported by a roller at A and is on a hinge at C as shown below The reaction at the roller end A is given by |
| A. | P |
| B. | 2P |
| C. | P/2 |
| D. | Zero. |
| Answer» E. | |
| 16. |
The force in the member of the truss shown in the below figure is, |
| A. | 100.0 kN |
| B. | zero |
| C. | 35.5 kN |
| D. | 25.0 kN |
| Answer» C. 35.5 kN | |
| 17. |
The proposed dam shown in the below figure is 90 m long and coefficient of permeability of the soil is 0.0013 mm/second. The quantity of water (m) that will be lost per day, by seepage is (rounded to the nearest number): |
| A. | 55 |
| B. | 57 |
| C. | 59 |
| D. | 61 |
| Answer» E. | |
| 18. |
A 1 : 30 model of an ogee spillway crest records an acceleration of 1.3 m/s at a certain location. The homologous value of the acceleration in the prototype in m/s , is |
| A. | 0.043 |
| B. | 0.237 |
| C. | 1.300 |
| D. | 7.120 |
| Answer» D. 7.120 | |
| 19. |
A mild steel specimen is under uni-axial tensile stress. Young's modulus and yield stress for mild steel are 2 x 10 MPa and 250 MPa respectively. The maximum amount of strain energy per unit volume that can be stored in this speciment without permanent set, is |
| A. | 156 Nmm/mm |
| B. | 15.6 Nmm/mm |
| C. | 1.56 Nmm/mm |
| D. | 0.156 Nmm/mm |
| Answer» E. | |
| 20. |
Allowable average shear stress in an un-stiffened web for beams made of steel of grade 250 N/mm is : |
| A. | 250 N/mm |
| B. | 165 N/mm |
| C. | 150 N/mm |
| D. | 100 N/mm |
| Answer» E. | |
| 21. |
The plastic modulus of a section is 4.8 x 10 m. The shape factor is 1.2. The plastic moment capacity of the section is 120 kN.m. The yield stress of the material is |
| A. | 100 MPa |
| B. | 240 MPa |
| C. | 250 MPa |
| D. | 300 MPa |
| Answer» D. 300 MPa | |
| 22. |
For the strip footing on a saturated clay, for the given failure surface as shown in the below figure, the bearing capacity equation takes the form : (where - undrained shear strength φ - angle of internal friction - width of strip footing - ultimate bearing capacity of soil) |
| A. | 5.7 |
| B. | 5.14 |
| C. | 4π |
| D. | 2π |
| Answer» C. 4π | |
| 23. |
The total active thrust on a vertical wall 3m high retaining a horizontal sand backfill (unit weight γ = 20 kN/m, 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 | |
| 24. |
A vertical rod of length is fixed at its top end and has a flange fixed to the bottom end . A weight is dropped vertically from a height (< ) on to the flange. The axial stress in the rod can be reduced by |
| A. | increasing the length of the rod |
| B. | decreasing the length of the rod |
| C. | decreasing the area of cross-section of the rod |
| D. | increasing the modulus of elasticity of the material |
| Answer» B. decreasing the length of the rod | |
| 25. |
Rivets and bolts subjected to both shear stress (τ) and axial tensile stress (σ) shall be so proportioned that the stresses do not exceed the respective allowable stresses τ and σ and the value of exceed does not exceed |
| A. | 1.0 |
| B. | 1.2 |
| C. | 1.4 |
| D. | 1.8 |
| Answer» D. 1.8 | |
| 26. |
Standard 5-day BOD of a waste water sample is nearly % of the ultimate BOD, where is |
| A. | 48 |
| B. | 58 |
| C. | 68 |
| D. | 78 |
| Answer» D. 78 | |
| 27. |
The value of bearing capacity factor for cohesion, , for piles as per Meyerhof, is taken as : |
| A. | 6.2 |
| B. | 12.0 |
| C. | 9.0 |
| D. | 5.14 |
| Answer» E. | |
| 28. |
Permissible bending tensile stress in high yield strength deformed bars of grade 415 N/mm in a beam is : |
| A. | 190 N/mm |
| B. | 230 N/mm |
| C. | 140 N/mm |
| D. | None of the above |
| Answer» C. 140 N/mm | |
| 29. |
The equation along a stream line holds true for : |
| A. | steady, frictionless, compressible fluid |
| B. | steady, uniform, incompressible fluid |
| C. | steady, frictionless, incompressible fluid |
| D. | unsteady incompressible fluid |
| Answer» C. steady, frictionless, incompressible fluid | |
| 30. |
An outlet irrigates an area of 20 ha. The discharge (/) 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 | |
| 31. |
If the pump head is 75 m, discharge is 0.464 m/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 | |
| 32. |
The effective length of a circular electric pole of length and constant diameters erected on ground is, |
| A. | 0.80 |
| B. | 1.20 |
| C. | 1.50 |
| D. | 2.00 |
| Answer» E. | |
| 33. |
A wastewater sample contains 10 mmol/l of O ions at 25° C. The pH of this sample is |
| A. | 8.6 |
| B. | 8.4 |
| C. | 5.6 |
| D. | 5.4 |
| Answer» E. | |
| 34. |
If an element of a stressed body is in a state of pure shear with a magnitude of 80 N/mm , the magnitude of maximum principal stress at that location is |
| A. | 80 N/mm |
| B. | 113.14 N/mm |
| C. | 120 N/mm |
| D. | 56.57 N/mm |
| Answer» B. 113.14 N/mm | |
| 35. |
The following characteristics pertain to the sand filters used in water industry. Which of the above characteristics pertain to slow sand filters ? |
| A. | I, II and III |
| B. | I and II |
| C. | II and III |
| D. | I and III |
| Answer» E. | |
| 36. |
Effective length of a rafter member between two nodes at a distance , perpendicular to the plane of the truss, is : . |
| A. | 2.00 |
| B. | 0.85 |
| C. | 1.50 |
| D. | 1.00 |
| Answer» C. 1.50 | |
| 37. |
Consistency Index for a clayer soil is [ = Liquid Limit, = Plastic Limit, = Plas-ticity Index, - natural moisture content] |
| A. | - |
| B. | 0.5 |
| Answer» B. 0.5 | |
| 38. |
The slope of the elastic curve at the free end of a cantilever beam of span , and with fluxural rigidity , subjected to uniformly distributed load of intensity is |
| A. | /6 |
| B. | /3 |
| C. | /8 |
| D. | /2 |
| Answer» B. /3 | |
| 39. |
The maximum shear stress in a solid shaft of circular cross-section having diameter subjected to a torque is τ. If the torque is increased by four times and the diameter of the shaft is increased by two times, the maximum shear stress in the shaft will be |
| A. | 2τ |
| B. | τ |
| C. | τ/2 |
| D. | τ/4 |
| Answer» D. τ/4 | |
| 40. |
In a drained triaixal compression test, a saturated specimen of a cohesionless sand fails under a deviatoric stress of 3 kgf/cm when the cell pressure is 1 kgf/cm . The effective angle of shearing resistance of sand is about |
| A. | 37° |
| B. | 45° |
| C. | 53° |
| D. | 20° |
| Answer» B. 45° | |
| 41. |
A direct shear test was conducted on a cohesionless soil ( = 0) specimen under a normal stress of 200 kN/m. The specimen failed at a shear stress of 100 kN/m. The angle of internal friction of the soil (degrees) is |
| A. | 26.6 |
| B. | 29.5 |
| C. | 30.0 |
| D. | 32.6 |
| Answer» B. 29.5 | |
| 42. |
The following two statements are made with reference to a simply supported under-reinforced RCC beam : With reference to the above statements, which of the following applies ? |
| A. | Both the statements are false. |
| B. | I is true but II is false. |
| C. | Both the statements are true. |
| D. | I is false but II is true. |
| Answer» D. I is false but II is true. | |
| 43. |
The members and of steel truss shown in the figure below are subjected to a temperature rise of 30° C. The coefficient of thermal expansion of steel is 0.000012 per °C per unit length. The displacement (mm) of joint relative to joint along the direction of the truss, is |
| A. | 0.255 |
| B. | 0.589 |
| C. | 0.764 |
| D. | 1.026 |
| Answer» D. 1.026 | |
| 44. |
A footing 2 m x 1 m exerts a uniform pressure of 150 kN/m on the soil. Assuming a load dispersion of 2 vertical to 1 horizontal the average vertical stress (kN/m) at 1.0 m below the footing is |
| A. | 50 |
| B. | 75 |
| C. | 80 |
| D. | 100 |
| Answer» B. 75 | |
| 45. |
Two completely penetrating wells are located (in metres) apart, in homogeneous confined aquifer. The drawdown measured at the mid point between the two wells (at a distance of 0.5 from both the wells) is 2.0 m when only the first well is being pumped at the steady rate of m/sec. When both the wells are being pumped at identical steady rate of m/sec, the drawdown measured at the same location is 8, 0 m. It may be assumed that the drawdown at the wells always remains at 10.0 m when being pumped and the radius of influence is larger than 0.5 / is equal to |
| A. | 8/5 |
| B. | 4/3 |
| C. | 5/8 |
| D. | ln ( |
| E. | /2) |
| Answer» E. /2) | |
| 46. |
The stepped cantilever is subjected to moments, as shown in the figure below. The vertical deflection at the free end (neglecting the self weight) is |
| A. | Zero |
| Answer» D. | |
| 47. |
A road is provided with a horizontal circular curve having deflection angle of 55° and centre line radius of 250 m. A transition curve is to be provided at each end of the circular curve of such a length that the rate of gain of radial acceleration is 0.3 m/s at a speed of 50 km per hour. Length of the transition curve required at each of the ends is |
| A. | 2.57 m |
| B. | 33.33 m |
| C. | 35.73 m |
| D. | 1666.67 m |
| Answer» D. 1666.67 m | |
| 48. |
A deep cut of 7 m has to be made in a clay with unit weight 16 kN/m and a cohesion of 25 kN/m. What will be the factor of safety if one has to have a slope angle of 30° ? Stability number is given to be 0.178 (from Taylor's chart) for a depth factor of 3. |
| A. | 0.80 |
| B. | 1.1 |
| C. | 1.25 |
| D. | 1.0 |
| Answer» D. 1.0 | |
| 49. |
Two samples of water and have pH values of 4.4 and 6.4 respectively. How many times more acidic sample is than sample ? |
| A. | 0 |
| B. | 50 |
| C. | 100 |
| D. | 200 |
| Answer» D. 200 | |
| 50. |
A volume of 3.0 x 10 m of ground water was pumped out from an unconfined aquifer, uniformly from an area of 5 km. The pumping lowered the water table from initial level of 102 m to 99 m. The specific yield of the aquifier is |
| A. | 0.20 |
| B. | 0.30 |
| C. | 0.40 |
| D. | 0.50 |
| Answer» B. 0.30 | |