The maximum deflection of a simply supported beam of span L, carrying an isolated load at the centre of the span; flexural rigidity being EI, is______________?

Related Mcqs:

1. 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

2. 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

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 maximum deflection due to a load W at the free end of a cantilever of length L and having flexural rigidity EI, is_____________?

   A. WL²/2EI

   B. WL²/3EI

   C. WL3/2EI

   D. WL3/3EI

5. The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is_________________?

   A. wl3/3EI
   B. wl4/3EI
   C. wl4/8EI
   D. wl4/12EI

6. 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

7. 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

8. A simply supported beam carries varying load from zero at one end and w at the other end. If the length of the beam is a, the maximum bending moment will be_______________?

   A. wa/27
   B. wa²/27
   C. w²a
   D. wa²

9. A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the bar, is___________________?

   A. 411 N mm
   B. 511 N mm=
   C. 611 N mm
   D. 711 N mm

10. A cantilever of length is subjected to a bending moment at its free end. If EI is the flexural rigidity of the section, the deflection of the free end, is_________________?

    A. ML/EI
    B. ML/2EI
    C. ML²/2EI
    D. ML²/3EI