MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 104 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. |
In a shaft, the shear stress is not directly proportional to%! |
| A. | Radius of the shaft |
| B. | Angle of twist |
| C. | Length of the shaft |
| D. | Modulus of rigidity |
| Answer» D. Modulus of rigidity | |
| 2. |
Pick up the incorrect statement from the following: The torsional resistance of a shaft is directly proportional to%! |
| A. | Modulus of rigidity |
| B. | Angle of twist |
| C. | Reciprocal of the length of the shaft |
| D. | Moment of inertia of the shaft section |
| Answer» E. | |
| 3. |
The general expression for the B.M. of a beam of length l is the beam carries M = (wl/2) x – (wx²/2)%! |
| A. | A uniformly distributed load w/unit length |
| B. | A load varying linearly from zero at one end to w at the other end |
| C. | An isolated load at mid span |
| D. | None of these |
| Answer» B. A load varying linearly from zero at one end to w at the other end | |
| 4. |
The maximum bending moment for a simply supported beam with a uniformly distributed load w/unit length, is%! |
| A. | WI/2 |
| B. | WI²/4 |
| C. | WI²/8 |
| D. | WI²/12 |
| Answer» D. WI¬¨‚â§/12 | |
| 5. |
*$_Inertia of a rectangular section of width and depth about an axis passing the moment of through C.G. and parallel to its width is? |
| A. | BD²/6 |
| B. | BD³/6 |
| C. | BD³/12 |
| D. | B²D/6 |
| Answer» D. B¬¨‚â§D/6 | |
| 6. |
*$_A simply supported beam carries varying load from zero at one end and w at the other end. If the length of the beam is a, the maximum bending moment will be? |
| A. | wa/27 |
| B. | wa²/27 |
| C. | w²a |
| D. | wa² |
| Answer» E. | |
| 7. |
*$_For the close coil helical spring of the maximum deflection is? |
| A. | WD3n/d4N |
| B. | 2WD3n/d4N |
| C. | 4W²D3n/d4N |
| D. | 8WD3n/d4N |
| Answer» E. | |
| 8. |
*$_A bar L metre long and having its area of cross-section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is? |
| A. | WL/2AE |
| B. | WL/AE |
| C. | W²L/AE |
| D. | W²L/2AE |
| Answer» E. | |
| 9. |
*$_For determining the support reactions at A and B of a three hinged arch, points B and Care joined and produced to intersect the load line at D and a line parallel to the load line through A at D’. Distances AD, DD’ and AD’ when measured were 4 cm, 3 cm and 5 cm respectively. The angle between the reactions at A and B is? |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 90° |
| Answer» E. | |
| 10. |
*$_A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm²), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is? |
| A. | 25 N |
| B. | 30 N |
| C. | 35 N |
| D. | 40 N |
| Answer» D. 40 N | |
| 11. |
*$_A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is? |
| A. | [W (1 + f/ G)]/ A |
| B. | (1 – g/f)/A |
| C. | [W (2 + f/G)]/A |
| D. | [W (2 + g/f)]/A |
| Answer» B. (1 ‚Äö√Ñ√¨ g/f)/A | |
| 12. |
*$_The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called? |
| A. | Stiffness |
| B. | Proof resilience |
| C. | Proof stress |
| D. | Proof load |
| Answer» C. Proof stress | |
| 13. |
*$_A body is said to be in equilibrium if? |
| A. | It moves horizontally |
| B. | It moves vertically |
| C. | It rotates about its C.G. |
| D. | None of these |
| Answer» E. | |
| 14. |
*$_The strain energy due to volumetric strain? |
| A. | Is directly proportional to the volume |
| B. | Is directly proportional to the square of exerted pressure |
| C. | Is inversely proportional to Bulk modulus |
| D. | All the above |
| Answer» E. | |
| 15. |
*$_A masonry dam (density = 20,000 N/m³) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be? |
| A. | 75 N/m² |
| B. | 750 N/m² |
| C. | 7500 N/m² |
| D. | 75000 N/m² |
| Answer» D. 75000 N/m¬¨‚⧠| |
| 16. |
*$_The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘R’ carrying? |
| A. | A uniformly distributed load ? per unit run over its right half span, is ? ?R/? |
| B. | A uniformly distributed load ? per unit run over its entire span is 4/3 ?R/? |
| C. | A distributed load varying from zero at the left end to ? per unit horizontal run at the right end, is ? ?R/? |
| D. | All the above |
| Answer» E. | |
| 17. |
*$_A compound truss may be formed by connecting two simple rigid frames, by? |
| A. | Two bars |
| B. | Three bars |
| C. | Three parallel bars |
| D. | Three bars intersecting at a point |
| Answer» C. Three parallel bars | |
| 18. |
*$_In the truss, the force in the member AC is? |
| A. | 6.25 t compressive |
| B. | 8.75 t tensile |
| C. | t tensile |
| D. | t compressive |
| Answer» E. | |
| 19. |
*$_A three hinged arch is generally hinged at its supports and? |
| A. | At one quarter span |
| B. | At the crown |
| C. | Anywhere in the rib |
| D. | None of these |
| Answer» D. None of these | |
| 20. |
*$_Maximum principal stress theory for the failure of a material at elastic point, is known? |
| A. | Guest's or Trecas' theory |
| B. | St. Venant's theory |
| C. | Rankine's theory |
| D. | Von Mises' theory |
| Answer» D. Von Mises' theory | |
| 21. |
*$_In plastic analysis, the shape factor for a circular section, is? |
| A. | 1.5 |
| B. | 1.6 |
| C. | 1.7 |
| D. | 1.75 |
| Answer» D. 1.75 | |
| 22. |
*$_For beams breadth is constant,? |
| A. | Depth d M |
| B. | Depth d 3 |
| C. | Depth d |
| D. | Depth d 1/M |
| Answer» C. Depth d | |
| 23. |
*$_A close coil helical spring when subjected to a moment M having its axis along the axis of the helix? |
| A. | It is subjected to pure bending |
| B. | Its mean diameter will decrease |
| C. | Its number of coils will increase |
| D. | All the above |
| Answer» B. Its mean diameter will decrease | |
| 24. |
*$_The equivalent length is of a column of length having both the ends fixed, is? |
| A. | 2 L |
| B. | L |
| C. | L/2 |
| D. | L |
| Answer» D. L | |
| 25. |
*$_A compound bar consists of two bars of equal length. Steel bar cross -section is 3500 mm²and that of brass bar is 3000 mm². These are subjected to a compressive load 100,000 N. If Eb = 0.2 MN/mm² and Eb = 0.1 MN/mm², the stresses developed are:? |
| A. | b = 10 N/mm² s = 20 N/mm 2 |
| B. | b = 8 N/mm² s = 16 N/mm² |
| C. | b = 6 N/mm² s = 12 N/mm² |
| D. | b = 5 N/mm² s = 10 N/mm² |
| Answer» B. b = 8 N/mm¬¨‚⧠s = 16 N/mm¬¨‚⧠| |
| 26. |
*$_In plastic analysis, the shape factor for rectangular section, is? |
| A. | 1.4 |
| B. | 1.5 |
| C. | 1.6 |
| D. | 1.7 |
| Answer» C. 1.6 | |
| 27. |
*$_There are two hinged semicircular arches A, B and C of radii 5 m, 7.5 m and 10 m respectively and each carries a concentrated load W at their crowns. The horizontal thrust at their supports will be in the ratio of? |
| A. | 1 : 1¬Ω : 2 |
| B. | 2 : 1¬Ω : 1 |
| C. | 1 : 1 : 2 |
| D. | None of these |
| Answer» D. None of these | |
| 28. |
*$_The load on a spring per unit deflection, is called? |
| A. | Stiffness |
| B. | Proof resilience |
| C. | Proof stress |
| D. | Proof load |
| Answer» B. Proof resilience | |
| 29. |
%_The ratio of moments of inertia of a triangular section about its base and about a centroidal axis parallel to its base, is_% |
| A. | 1.0 |
| B. | 1.5 |
| C. | 2.0 |
| D. | 3.0 |
| Answer» E. | |
| 30. |
%_The locus of the end point of the resultant of the normal and tangential components of the stress on an inclined plane, is_% |
| A. | Circle |
| B. | Parabola |
| C. | Ellipse |
| D. | Straight line |
| Answer» D. Straight line | |
| 31. |
%_A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm² and Poisson’s ratio is 0.25, the change in the volume of the bar is:_% |
| A. | 1.125 cm³ |
| B. | 2.125 cm³ |
| C. | 3.125 cm³ |
| D. | 4.125 cm² |
| Answer» D. 4.125 cm¬¨‚⧠| |
| 32. |
%_In case of a simply supported I-section beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is_% |
| A. | L/2 |
| B. | L/3 |
| C. | L/4 |
| D. | L/5 |
| Answer» E. | |
| 33. |
%_An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of span 2l and rise h hinged at the crown, the horizontal reaction at the support, is_% |
| A. | Wa/h |
| B. | Wa/2h |
| C. | 2W/ha |
| D. | 2h/Wa |
| Answer» C. 2W/ha | |
| 34. |
%_The point of contraflexure is the point where_% |
| A. | B.M. changes sign |
| B. | B.M. is maximum |
| C. | B.M. is minimum |
| D. | S.F. is zero |
| Answer» B. B.M. is maximum | |
| 35. |
%_The area of the core of a column of cross sectional area A, is_% |
| A. | (1/3) A |
| B. | (1/6) A |
| C. | (1/12) A |
| D. | (1/18) A |
| Answer» E. | |
| 36. |
%_Maximum strain theory for the failure of a material at the elastic limit, is known as_% |
| A. | Guest's or Trecas' theory |
| B. | St. Venant's theory |
| C. | Rankine's theory |
| D. | Haig's theory |
| Answer» C. Rankine's theory | |
| 37. |
%_A shaft subjected to a bending moment M and a torque T, experiences_% |
| A. | Maximum bending stress = 32M/πd³ |
| B. | Maximum shear stress = 16 T/πd³ |
| C. | Both A and B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 38. |
_ A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the maximum bending stress to maximum shear stress developed in the shaft, is$? |
| A. | M/T |
| B. | T/M |
| C. | 2M/ T |
| D. | 2T/M |
| Answer» D. 2T/M | |
| 39. |
_ The maximum deflection of a simply supported beam of span L, carrying an isolated load at the centre of the span; flexural rigidity being EI, is$? |
| A. | WL3/3EL |
| B. | WL3/8EL |
| C. | WL3/24EL |
| D. | WL3/48EL |
| Answer» E. | |
| 40. |
_ A short column (30 cm √ó 20 cm) carries a load P 1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be$? |
| A. | 2/3 |
| B. | 3/2 |
| C. | 8/5 |
| D. | 5/8 |
| Answer» D. 5/8 | |
| 41. |
_ A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm², the deflection of the free end, is$? |
| A. | 2 mm |
| B. | 3 mm |
| C. | 4 mm |
| D. | 5 mm |
| Answer» E. | |
| 42. |
_ a uniform circular bar of diameter d and length , which extends by an The deflection of amount under a tensile pull , when it carries the same load at its mid-span, is$? |
| A. | el/2d |
| B. | e²l/3d² |
| C. | el²/3d² |
| D. | e²l²/3d² |
| Answer» D. e¬¨‚â§l¬¨‚â§/3d¬¨‚⧠| |
| 43. |
_ The shape factor of standard rolled beam section varies from$? |
| A. | 1.10 to 1.20 |
| B. | 1.20 to 1.30 |
| C. | 1.30 to 1.40 |
| D. | 1.40 to 1.50 |
| Answer» B. 1.20 to 1.30 | |
| 44. |
_ A truss containing j joints and m members, will be a simple truss if$? |
| A. | m = 2j – 3 |
| B. | j = 2m – 3 |
| C. | m = 3j – 2 |
| D. | j = 3m – 2 |
| Answer» B. j = 2m ‚Äö√Ñ√¨ 3 | |
| 45. |
_ In case of principal axes of a section$? |
| A. | Sum of moment of inertia is zero |
| B. | Difference of moment inertia is zero |
| C. | Product of moment of inertia is zero |
| D. | None of these |
| Answer» D. None of these | |
| 46. |
_ A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid-span. The same bar experiences an extension e under same tensile load. The ratio of the maximum deflection to the elongation, is$? |
| A. | L/d |
| B. | L/2d |
| C. | (L/2d)² |
| D. | (L/3d)² |
| Answer» D. (L/3d)¬¨‚⧠| |
| 47. |
_ A composite beam is composed of two equal strips one of brass and other of steel. If the temperature is raised$? |
| A. | Steel experiences tensile force |
| B. | Brass experiences compressive force |
| C. | Composite beam gets subjected to a couple |
| D. | All the above |
| Answer» E. | |
| 48. |
_ The ratio of maximum and average shear stresses on a rectangular section, is$? |
| A. | 1 |
| B. | 1.25 |
| C. | 1.5 |
| D. | 2.5 |
| Answer» D. 2.5 | |
| 49. |
_ The equivalent length of a column of length L, having both the ends hinged, is$? |
| A. | 2L |
| B. | L |
| C. | L/2 |
| D. | L |
| Answer» C. L/2 | |
| 50. |
_ At yield point of a test piece, the material$? |
| A. | Obeys Hooke’s law |
| B. | Behaves in an elastic manner |
| C. | Regains its original shape on removal of the load |
| D. | Undergoes plastic deformation |
| Answer» E. | |