Strength of Materials MCQ

1. What is the result of compression?

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2. What is shear?

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3. What is Torsion?

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4. What is the definition of toughness?

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5. What is hardness?

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6. What is the definition of elasticity?

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7. What is the Rupture Stress?

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8. What is the result of direct shear stress?

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9. What does a stress strain diagram show?

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10. Strain is defined as the ratio of the _____.

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11. What is the formula for transverse strain?

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12. What is the SI unit for Stress?

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13. What is Axial Strain?

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14. What is the opposite of ductility?

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15. What does ductility refer to?

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16. What is the ability of a material to return to its previous shape after stress is released called?

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17. What is the intensity of the internal resisting force called?

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18. What is the deformation of the material called?

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19. What is the strength of a material?

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20. Which of the following is NOT a type of stress?

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21. What is the highest stress that a material is capable of developing?

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22. Which of the following is not a characteristic of a force in compression?

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23. A force in tension will cause the member to ___________.

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24. What is Strain?

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25. What does STRAIN represent?

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26. What is the study of forces that act on bodies in motion and forces that are applied extremely rapidly called?

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27. What is the study of forces that act on bodies at REST called?

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28. If is the internal pressure in a thin cylinder of diameter and thickness , the developed hoop stress, is

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29. 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

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30. Every material obeys the Hooke's law within its

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31. 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

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32. To ascertain the maximum permissible eccentricity of loads on circular columns, the rule generally followed, is

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33. For a cantilever with a uniformly distributed load W over its entire length L, the maximum bending moment is

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34. If the beam is supported so that there are only three unknown reactive elements at the supports. These can be determined by using the following fundamental equation of statics

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35. A simply supported beam carries two equal concentrated loads W at distances L/3 from either support. The maximum bending moment

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36. In a three hinged arch, the bending moment will be zero

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37. Euler's formula states that the buckling load for a column of length , both ends hinged and whose least moment of inertia and modulus of elasticity of the material of the column are and respectively, is given by the relation

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38. An open-ended cylinder of radius and thickness is subjected to internal pressure . The Young's modulus for the material is and Poisson's ratio is . The longitudinal strain is

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39. The maximum deflection of a simply supported beam of length L with a central load W, is

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40. Maximum deflection of a cantilever due to pure bending moment M at its free end, is

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41. If the stress in each cross-section of a pillar is equal to its working stress, it is called

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42. The phenomenon of slow growth of strain under a steady tensile stress, is called

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43. Reactions at the supports of a structure can be determined by equating the algebraic sum of

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44. In a square beam loaded longitudinally, shear develops

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45. At either end of a plane frame, maximum number of possible transverse shear forces, are

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46. 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

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47. 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

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48. 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

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49. The slenderness ratio of a vertical column of square cross- section of 10 cm side and 500 cm long, is

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50. 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

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51. A short masonry pillar is 60 cm x 60 cm in cross-section, the core of the pillar is a square whose side is

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52. For a given material, if E, C, K and m are Young

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53. The equivalent length of a column fixed at one end and free at the other end, is

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54. In a continuous bending moment curve the point where it changes sign, is called

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55. The neutral axis of a beam cross-section must

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56. Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to

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57. The tension coefficient of any member is

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58. 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

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59. Hooke

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60. The distance between the centres of adjacent rivets in the same row, is called

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61. The width of a beam of uniform strength having a constant depth d length L, simply supported atthe ends with a central load W is

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62. Along the principal plan subjected to maximum principal stress

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63. For a simply supported beam carrying uniformly distributed load W on it entire length L, the maximum bending moment is

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64. When a rectangular beam is loaded longitudinally, shear develops on

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65. 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

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66. When two plates butt together and are riveted with two cover plates with two rows of rivets, the joint is known as

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67. The number of points of contraflexure in a simple supported beam carrying uniformly distributed load, is

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68. The rise of a parabolic arch at quarter points, is equal to

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69. For a given material Young

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70. As the elastic limit reaches, tensile strain

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71. A cylinder is said to be thin if the ratio of its thickness and diameter, is less than

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72. 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

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73. 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

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74. The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known

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75. 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

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76. If a member is subjected to a tensile force P, having its normal cross-section A, the resulting shear

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77. 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

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78. The point of contraflexure occurs in

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79. Stress in members of statically determinate simple frames, can be determined by

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80. 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

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81. Pick up the correct statement from the following:

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82. 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,

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83. The minimum number of rivets for the connection of a gusset plate, is

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84. If the depth of a simply supported beam carrying an isolated load at its centre, is doubled, the deflection of the beam at the centre will be changed by a factor of

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85. A cantilever carrying a uniformly distributed load W over its full length is propped at its free end such that it is at the level of the fixed end. The bending moment will be zero at its free end also at

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86. Columns of given length, cross-section and material have different values of buckling loads for different end conditions. The strongest column is one whose

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87. In a tension test, the yield stress is 300 kg/cm2, in the octahedral shear stress at the point is:

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88. When a rectangular beam is loaded transversely, the maximum compressive stress develops on

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89. A uniform girder simply supported at its ends is subjected to a uniformly distributed load over its entire length and is propped at the centre so as to neutralise the deflection. The net B.M. at the centre will be

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90. A three hinged arch is loaded with an isolated load 1000 kg at a horizontal distance of 2.5 m from the crown, 1 m above the level of hinges at the supports 10 metres apart. The horizontal thrust is

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91. A solid cube is subjected to equal normal forces on all its faces. The volumetric strain will be x- times the linear strain in any of the three axes when

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92. A member which does not regain its original shape after removed of load producing deformation is said

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93. A simply supported beam of span carries a uniformly distributed load . The maximum bending moment is

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94. A shaft turning 150 r.p.m. is subjected to a torque of 150 kgm. Horse power transmitted by the shaft is

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95. The stress at which extension of a material takes place more quickly as compared to the increase in load, is called

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96. The shape of the bending moment diagram over the length of a beam, having no external load, is always

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97. In a shaft rotated by a couple, the shear force varies

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98. If the normal cross-section of a member is subjected to tensile force , the resulting normal

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99. The moment diagram for a cantilever which is subjected to a uniformly distributed load will be a

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100. The length of a column, having a uniform circular cross-section of 7.5 cm diameter and whose ends are hinged, is 5 m. If the value of E for the material is 2100 tonnes/cm2, the permissible maximum crippling load will be

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