For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is________________?

Related Mcqs:

1. The radius of gyration of a rectangular section (depth D, width B) from a centroidal axis parallel to the width is__________________?

   A. D/2
   B. D
   C. D
   D. D

2. inertia of a rectangular section of width and depth about an axis passing The moment of through C.G. and parallel to its width is_______________?

   A. BD²/6
   B. BD3/6
   C. BD3/12
   D. B²D/6

3. A simply supported beam which carries a uniformly distributed load has two equal overhangs. To have maximum B.M. produced in the beam least possible, the ratio of the length of the overhang to the total length of the beam, is_________________?

   A. 0.207
   B. 0.307
   C. 0.407
   D. 0.508

4. The ratio of the length and depth of a simply supported rectangular beam which experiences maximum bending stress equal to tensile stress, due to same load at its mid span, is_______________?

   A. 1/2
   B. 2/3
   C. 1/4
   D. 1/3

5. The ratio of maximum shear stress to average shear stress of a circular beam, is________________?

   A. 2/3
   B. 3/2
   C. 3/4
   D. 4/3

6. A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid-span. The same bar experiences an extension e under same tensile load. The ratio of the maximum deflection to the elongation, is________________?

   A. L/d
   B. L/2d
   C. (L/2d)²
   D. (L/3d)²

7. A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be________________?

   A. 2/3
   B. 3/2
   C. 5/8
   D. 8/5

8. The ratio of the length and diameter of a simply supported uniform circular beam which experiences maximum bending stress equal to tensile stress due to same load at its mid span, is___________________?

   A. 1/8
   B. 1/4
   C. 1/2
   D. 1/3

9. A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm2, the deflection of the free end, is________________?

   A. 2 mm
   B. 3 mm
   C. 4 mm
   D. 5 mm

10. The ratio of maximum and average shear stresses on a rectangular section, is________________?

    A. 1
    B. 1.25
    C. 1.5
    D. 2.5