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MCQOPTIONS
This section includes 244 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. |
If the length of a cantilever carrying an isolated load at its free end is doubled, the deflection of the free end will increase by |
| A. | 8 |
| B. | 1/8 |
| C. | 1/3 |
| D. | 2 |
| Answer» C. 1/3 | |
| 2. |
Every material obeys the Hooke's law within its |
| A. | Elastic limit |
| B. | Plastic point |
| C. | Limit of proportionality |
| D. | None of these |
| Answer» D. None of these | |
| 3. |
A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be |
| A. | 5 tonnes metre |
| B. | 10 tonnes metre |
| C. | 15 tonnes metre |
| D. | 20 tonnes metre |
| Answer» E. | |
| 4. |
To ascertain the maximum permissible eccentricity of loads on circular columns, the rule generally followed, is |
| A. | Middle half rule of columns |
| B. | Middle third rule of columns |
| C. | Middle fourth rule of columns |
| D. | None of these |
| Answer» D. None of these | |
| 5. |
For a cantilever with a uniformly distributed load W over its entire length L, the maximum bending moment is |
| A. | WL |
| B. | ½ WL |
| C. | 1/2 WL |
| D. | ½ WL2 |
| Answer» C. 1/2 WL | |
| 6. |
A simply supported beam carries two equal concentrated loads W at distances L/3 from either support. The maximum bending moment |
| A. | WL/3 |
| B. | WL/4 |
| C. | 5WL/4 |
| D. | 3WL/12 |
| Answer» B. WL/4 | |
| 7. |
In a three hinged arch, the bending moment will be zero |
| A. | At right hinge only |
| B. | At left hinge only |
| C. | At both right and left hinges |
| D. | At all the three hinges |
| Answer» E. | |
| 8. |
The maximum deflection of a simply supported beam of length L with a central load W, is |
| A. | WL²/48EI |
| B. | W²L/24EI |
| C. | WL3 /48EI |
| D. | WL²/8EI |
| Answer» D. WL²/8EI | |
| 9. |
Maximum deflection of a cantilever due to pure bending moment M at its free end, is |
| A. | ML²/3EI |
| B. | ML²/4EI |
| C. | ML²/6EI |
| D. | ML²/2EI |
| Answer» E. | |
| 10. |
If the stress in each cross-section of a pillar is equal to its working stress, it is called |
| A. | Body of equal |
| B. | Body of equal section |
| C. | Body of equal strength |
| D. | None of these |
| Answer» D. None of these | |
| 11. |
The phenomenon of slow growth of strain under a steady tensile stress, is called |
| A. | Yielding |
| B. | Creeping |
| C. | Breaking |
| D. | None of these |
| Answer» C. Breaking | |
| 12. |
Reactions at the supports of a structure can be determined by equating the algebraic sum of |
| A. | Horizontal forces to zero |
| B. | Vertical forces to zero |
| C. | Moment about any point to zero |
| D. | All the above |
| Answer» E. | |
| 13. |
In a square beam loaded longitudinally, shear develops |
| A. | On middle fibre along horizontal plane |
| B. | On lower fibre along horizontal plane |
| C. | On top fibre along vertical plane |
| D. | Equally on each fibre along horizontal plane |
| Answer» E. | |
| 14. |
At either end of a plane frame, maximum number of possible transverse shear forces, are |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» B. Two | |
| 15. |
The maximum compressive stress at the top of a beam is 1600 kg/cm2 and the corresponding tensile stress at its bottom is 400 kg/cm2 . If the depth of the beam is 10 cm, the neutral axis from the top, is |
| A. | 2 cm |
| B. | 4 cm |
| C. | 6 cm |
| D. | 8 cm |
| Answer» C. 6 cm | |
| 16. |
A rectangular log of wood is floating in water with a load of 100 N at its centre. The maximum shear force in the wooden log is |
| A. | 50 N at each end |
| B. | 50 N at the centre |
| C. | 100 N at the centre |
| D. | None of these |
| Answer» D. None of these | |
| 17. |
A steel rod of 2 cm diameter and 5 metres long is subjected to an axial pull of 3000 kg. If E = 2.1 × 106 , the elongation of the rod will be |
| A. | 2.275 mm |
| B. | 0.2275 mm |
| C. | 0.02275 mm |
| D. | 2.02275 mm |
| Answer» C. 0.02275 mm | |
| 18. |
The slenderness ratio of a vertical column of square cross- section of 10 cm side and 500 cm long, is |
| A. | 117.2 |
| B. | 17.3 |
| C. | 173.2 |
| D. | 137.2 |
| Answer» D. 137.2 | |
| 19. |
The ratio of the maximum deflection of a cantilever beam with an isolated load at its free end and with a uniformly distributed load over its entire length, is |
| A. | 1 |
| B. | 24/15 |
| C. | 3/8 |
| D. | 8/3 |
| Answer» E. | |
| 20. |
A short masonry pillar is 60 cm x 60 cm in cross-section, the core of the pillar is a square whose side is |
| A. | 17.32 cm |
| B. | 14.14 cm |
| C. | 20.00 cm |
| D. | 22.36 cm |
| Answer» C. 20.00 cm | |
| 21. |
For a given material, if E, C, K and m are Young's modulus, shearing modulus, bulk modulus and Poisson ratio, the following relation does not hold good |
| A. | E = 9KC/3K + C |
| B. | E = 2K (1 + 2/m) |
| C. | E = 2C (1 + 1/m) |
| D. | E = 3C (1 - 1/m) |
| Answer» D. E = 3C (1 - 1/m) | |
| 22. |
The equivalent length of a column fixed at one end and free at the other end, is |
| A. | 0.5 l |
| B. | 0.7 l |
| C. | 2 l |
| D. | 1.5 l |
| Answer» D. 1.5 l | |
| 23. |
In a continuous bending moment curve the point where it changes sign, is called |
| A. | Point of inflexion |
| B. | Point of contraflexure |
| C. | Point of virtual hinge |
| D. | All the above |
| Answer» E. | |
| 24. |
The neutral axis of a beam cross-section must |
| A. | Pass through the centroid of the section |
| B. | Be equidistant from the top of bottom films |
| C. | Be an axis of symmetry of the section |
| D. | None of these |
| Answer» B. Be equidistant from the top of bottom films | |
| 25. |
Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to |
| A. | Very long columns |
| B. | Long columns |
| C. | Short columns |
| D. | Intermediate columns |
| Answer» E. | |
| 26. |
The tension coefficient of any member is |
| A. | Force divided by the length |
| B. | Tension divided by the length |
| C. | Tension per unit area |
| D. | Tension in the member |
| Answer» C. Tension per unit area | |
| 27. |
For a beam, if fundamental equations of statics are not sufficient to determine all the reactive forces at the supports, the structure is said to be |
| A. | Determinate |
| B. | Statically determinate |
| C. | Statically indeterminate |
| D. | None of these |
| Answer» D. None of these | |
| 28. |
Hooke's law states that stress and strain are |
| A. | Directly proportional |
| B. | Inversely proportional |
| C. | Curvilinearly related |
| D. | None of these |
| Answer» B. Inversely proportional | |
| 29. |
The distance between the centres of adjacent rivets in the same row, is called |
| A. | Pitch |
| B. | Lap |
| C. | Gauge |
| D. | Staggered pitch |
| Answer» B. Lap | |
| 30. |
The width of a beam of uniform strength having a constant depth d length L, simply supported at the ends with a central load W is |
| A. | 2WL/3fd² |
| B. | 3WL/2fd² |
| C. | 2fL/3Wd 4 |
| D. | 3fL²/2Wd |
| Answer» C. 2fL/3Wd 4 | |
| 31. |
Along the principal plan subjected to maximum principal stress |
| A. | Maximum shear stress acts |
| B. | Minimum shear stress acts |
| C. | No shear stress acts |
| D. | None of these |
| Answer» D. None of these | |
| 32. |
For a simply supported beam carrying uniformly distributed load W on it entire length L, the maximum bending moment is |
| A. | WL/4 |
| B. | WL/8 |
| C. | WL/2 |
| D. | WL/3 |
| Answer» C. WL/2 | |
| 33. |
When a rectangular beam is loaded longitudinally, shear develops on |
| A. | Bottom fibre |
| B. | Top fibre |
| C. | Middle fibre |
| D. | Every-horizontal plane |
| Answer» E. | |
| 34. |
The moment diagram for a cantilever carrying linearly varying load from zero at its free end and to maximum at the fixed end will be a |
| A. | Triangle |
| B. | Rectangle |
| C. | Parabola |
| D. | Cubic parabola |
| Answer» E. | |
| 35. |
When two plates butt together and are riveted with two cover plates with two rows of rivets, the joint is known as |
| A. | Lap joint |
| B. | Butt joint |
| C. | Single riveted single cover butt joint |
| D. | Double riveted double cover butt joint |
| Answer» E. | |
| 36. |
The number of points of contraflexure in a simple supported beam carrying uniformly distributed load, is |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 37. |
The rise of a parabolic arch at quarter points, is equal to |
| A. | 1/3 times the rise of the crown |
| B. | 1/4 times the rise of the crown |
| C. | 1/2 times the rise of the crown |
| D. | 3/4 times the rise of the crown |
| Answer» E. | |
| 38. |
For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2 . The value of Poisson's ratio is |
| A. | 0.15 |
| B. | 0.20 |
| C. | 0.25 |
| D. | 0.30 |
| Answer» D. 0.30 | |
| 39. |
As the elastic limit reaches, tensile strain |
| A. | Increases more rapidly |
| B. | Decreases more rapidly |
| C. | Increases in proportion to the stress |
| D. | Decreases in proportion to the stress |
| Answer» B. Decreases more rapidly | |
| 40. |
A cylinder is said to be thin if the ratio of its thickness and diameter, is less than |
| A. | 1/25 |
| B. | 1/20 |
| C. | 1/15 |
| D. | 1/10 |
| Answer» E. | |
| 41. |
If the width of a simply supported beam carrying an isolated load at its centre is doubled, the deflection of the beam at the centre is changed by |
| A. | 2 times |
| B. | 4 times |
| C. | 8 times |
| D. | 1/2 times |
| Answer» D. 1/2 times | |
| 42. |
The region of the cross-section of a column in which compressive load may be applied without producing any tensile stress, is known as the core of the cross-section. In circular columns the radius of the core, is |
| A. | One-half of the radius |
| B. | One-third of the radius |
| C. | One-quarter of the radius |
| D. | One-fifth of the radius |
| Answer» D. One-fifth of the radius | |
| 43. |
The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known |
| A. | Buckling factor |
| B. | Slenderness ratio |
| C. | Crippling factor |
| D. | None of these |
| Answer» C. Crippling factor | |
| 44. |
If a shaft is simultaneously subjected to a toque T and a bending moment M, the ratio of maximum bending stress and maximum shearing stress is |
| A. | M/T |
| B. | T/M |
| C. | 2M/T |
| D. | 2T/M |
| Answer» D. 2T/M | |
| 45. |
A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10,000 kg, the corresponding maximum shearing stress being 30 kg/cm2 . The depth of the beam is |
| A. | 15 cm |
| B. | 20 cm |
| C. | 25 cm |
| D. | 30 cm |
| Answer» D. 30 cm | |
| 46. |
The point of contraflexure occurs in |
| A. | Cantilever beams only |
| B. | Continuous beams only |
| C. | Over hanging beams only |
| D. | All types of beams |
| Answer» D. All types of beams | |
| 47. |
Stress in members of statically determinate simple frames, can be determined by |
| A. | Method of joints |
| B. | Method of sections |
| C. | Graphical solution |
| D. | All the above |
| Answer» E. | |
| 48. |
The section modulus of a rectangular light beam 25 metres long is 12.500 cm3 . The beam is simply supported at its ends and carries a longitudinal axial tensile load of 10 tonnes in addition to a point load of 4 tonnes at the centre. The maximum stress in the bottom most fibre at the mid span section, is |
| A. | 13.33 kg/cm2 tensile |
| B. | 13.33 kg/cm2 compressive |
| C. | 26.67 kg/cm2 tensile |
| D. | 26.67 kg/cm2 compressive |
| Answer» D. 26.67 kg/cm2 compressive | |
| 49. |
The cross sections of the beams of equal length are a circle and a square whose permissible bending stress is same under same maximum bending. The ratio of their flexural weights is, |
| A. | 1.118 |
| B. | 1.338 |
| C. | 1.228 |
| D. | 1.108 |
| Answer» B. 1.338 | |
| 50. |
The minimum number of rivets for the connection of a gusset plate, is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |