Strength of Materials MCQ Online Quiz - Set 03 - ObjectiveBooks

# Quiz Questions

01. For biaxial stress, the planes of maximum shear are at right angles to each other and are inclined at 45° to the principal planes.

02. The shear force at a certain point on a beam changes sign from +ve value to ve value or vice versa. The bending moment at that point will be zero.

03. A shear stress across a plane, is always accompanied by a balancing shear stress across the plane and normal to it.

04. The torsional rigidity of a shaft is expressed by the torque required to produce a twist of one radian per unit length of a shaft.

05. The maximum bending moment of a simply supported beam with central point load lies at the point of loading.

06. The values of equivalent length (L) and actual length (l) of a column for both ends hinged is the same

07. The stiffness of a closely-coiled helical spring is ________ proportional to number of turns.

08. According to Euler's column theory, the crippling load of a column is given by p = π² EI/Cl². In the Euler's formula, the value of C for a column with one end fixed and the other end hinged, is 1/2.

09. When a rectangular beam is loaded longitudinally, the shear force develops on the top layer.

10. A load which acts at a point on a beam is not called uniformly distributed load.

11. On one side of a neutral axis of a beam, there is a tensile stress and on the other side of the beam there is a compressive stress.

12. The thermal stress __________ upon the cross-sectional area of the bar.

13. The total strain energy stored in a body is called proof resilience.

14. A spring, when loaded, is permanently distorted and recover its original shape when the load is removed.

15. In case of an over-reinforced beam, the depth of actual neutral axis is the same as that of the critical neutral axis.

16. The maximum shear stress is equal to the radius of Mohr's circle.

17. The bending moment at the ends of a simply supported beam will be zero.

18. When a body is subjected to a direct tensile stress (σ), the maximum normal stress is equal to the direct tensile stress.

19. When a material is loaded within elastic limit, the material will regain its shape and size when the load is removed.

20. The distance between the centres of rivets in adjacent rows of zigzag riveted joint, is called back pitch.

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