51. The assumption made in the theory of the reinforced cement concrete beam is that
52. The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, $$l$$ = Original length of the body, A = Cross-sectional area of the body and E = Young's modulus for the material of the body)
53. Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length by
54. In order to avoid tearing off the plate at an edge, the distance from the center of the rivet hole to the nearest edge of the plate (i.e. margin) should be (where d = Diameter of rivet hole in mm)
55. It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called
56. Rupture stress is
57. The relation between Young's modulus (E) and bulk modulus (K) is given by
58. The relation between Young's modulus (E), shear modulus (C) and bulk modulus (K) is given by
59. Lame's theory is associated with
60. Fatigue test is carried out for
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