Strength of Materials MCQ

1. The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called

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2. The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is

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3. The weakest section of a diamond riveting is the section which passes through

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4. Rivets are made of following type of material

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5. Diamond riveted joint can be adopted in the case of following type of joint

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6. If the rivets in adjacent rows are staggered and the outermost row has only one rivet, the arrangement of the rivets is called

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7. A riveted joint in which the number otrivets decrease from innermost to outer most row is called

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8. A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as

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9. When two plates are butt together and riveted with cover plates with two rows of rivets, the joi;it is known as

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10. Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the unpunched plate in

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11. The distance between the centres of the rivets in adjacent rows of zig-zag riveted joint is known as

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12. In riveted boiler joints, all stresses, shearing, bearing and tensile are based on the

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13. In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are

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14. The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be

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15. A non-yielding support implies that the

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16. A beam is loaded as cantilever. If the load at the end is increased, the failure will occur

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17. A material capable of absorbing large amount of energy before fracture is known as

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18. The strain energy stored in a body due to suddenly applied load compared to when it is applied gradually is

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19. The stress induced in a body due to suddenly applied load compared to when it is applied gradually is

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20. Proof resilience per material is known as

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21. The total strain energy stored in a body is termed as

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22. The maximum strain energy that can be stored in a body is known as

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23. The energy absorbed in a body, when it is strained within the elastic limits, is known as

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24. When it is indicated that a member is elastic, it means that when force is applied, it will

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25. Flow stress corresponds to

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26. In question 56, the internal reaction in bottom 80 cm length will be

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27. The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to

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28. The ratio of lateral strain to the linear strain within elastic limit is known as

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29. The elasticity of various materials is controlled by its

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30. Rupture stress is

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31. The stress developed in a material at breaking point in extension is called

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32. In the tensile test, the phenomenon of slow extension of the material, i. stress increasing with the time at a constant load is called

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33. The stress necessary to initiate yielding is

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34. In a tensile test, near the elastic limit zone, the

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35. If a material expands freely due to heating it will develop

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36. The percentage reduction in area of a cast iron specimen during tensile test would be of the order of

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37. The change in the unit volume of a material under tension with increase in its Poisson’s ratio will ,

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38. The property of a material by virtue of which it can be beaten or rolled into plates is called

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39. For which material the Poisson’s ratio is more than unity

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40. Poisson’s ratio is defined as the ratio of

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41. The property of a material which allows it to be drawn into a smaller section is called

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42. The value of Poisson’s ratio for cast iron is

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43. The materials which exhibit the same elastic properties in all directions are called

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44. The property of a material by virtue of which a body returns to its original, shape after removal of the load is called

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45. The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight

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46. The buckling load for a given material depends on

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47. The value of Poisson’s ratio for steel is between

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48. The value of modulus of elasticity for mild steel is of the order of