Structural Theory 76. The slope at any point in the elastic curve is deflection at that same point is maximum. A positive B. negative C. tangent D. zero when the 77. The product of the modulus of elasticity of a material and the moment of inertia is called, A relative stiffness B. flexural rigidity C. modulus of inertia D. bending strain 78. The constants of integration are determined by evaluating the functions for slope or displacement at a particular point on the beam where the value of the function is known. These values are called A. initial deflection B. critical points C beam slopes D. boundary conditions 79. It is a point on the elastic curve that indicates the change in the direction of curvature and considered as the location to which has a zero moment A. Inflection point B. elastic curve C. zero-flexural point D. zero-shear point 80. A simple beam with a span "L" is loaded with a uniform distributed load "w" throughout its span. Assuming El is constant. Which of the following gives the maximum deflection? A B C D. 81. A simply supported beam (L-4.5 m) with pin and roller support at left and right side, respectively. What is the maximum uniform distributed load (in kN/m) the beam can carry if the allowable deflection in the beam is L/360, where L is the span of the beam. Given E 200 GPa, l = 68.410mm*. A 20.0 B. 28.4 C. 32.0 D. 24.5 Situation 14-A simply supported beam with an overhang at left side is loaded as shown in the figure below. Assuming El 15800 kN-m is constant. Given: L. - 1.5 mL 2.25 m, La 2.25 m, w - 15 kN/m. W 82. Determine the reaction at A, in kN. B. 49.2 83. Calculate the slope at B, in radians. A. 51.6 A. 6.7710+ B. 7.7610+1 A. 4.2 C. 4.7 D. 7.1 C D. 3.55-10+ 5.5310+ C 3.2 D. 1.2 84. Calculate the deflection at D, in mm. B. 2.2 Situation 15 - A prismatic simple beam is 3 m in length is designed to carry a uniform distributed load w 6 kN/m and a point load of 15 kN located at 0.5 m from the right support. Use B-200 GPa and 1- 15010 mm 85. Compute the vertical reaction at the left support, in kN. A. 9.5 B. 21.5 C. 11.5 D. 23.5 86. Determine the location (m) of the maximum moment from the left support A 1.86 A. 0.311 C. 1.58 D. 1.44 87. Determine the maximum deflection (mm) of the beam? B. 1.91 B. 0.245 C 0.282 D. 0.385