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Civil Engineering Objective Questions { Strength Of Materials }



29.  In a continuous bending moment curve the point where it changes sign, is called
A. point of inflexion
B. point of contraflexture
C. point of virtual hinge
D. all the above.

30. Pick up the correct assumption of the theory of simple bending
A. The value of the Young's modulus is the same in tension as well as in compression
B. Transverse section of a beam remains plane before and after bending
C. The material of the beam is homogeneous and isotropic
D. All the above.

31. Along the neutral axis of a simply supported beam
A. fibres do not undergo strain
B. fibres undergo minimum strain
C. fibres undergo maximum strain
D. none of these.

32. The radius of gyration of a rectangular section is not proportional to
A. square root of the moment of inertia
B. square root of the inverse of the area
C.(d) square root of the moment of inertia divided by area of the section
D. none of these.

33. The ratio of the moment of inertia of a circular plate and that of a square plate for equal depth, is
A. less than one
B. equal to one
C. more than one
D. equal to 37d6

34. The section modulus of a rectangular section is proportional to
A. area of the section
B. square of the area of the section
C. product of the area and depth
D. product of the area and width

35.  The shear force on a simply supported beam is proportional to
A. displacement of the neutral axis
B. sum of the forces
C. sum of the transverse forces
D. algebraic sum of the transverse forces of the section

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