| Beams of uniform strength are preferred to those of uniform section because these are economical for |
A) Large Spans
B) Heavy Spans
C) Shorter Spans
D) Light Weight
| Which of the following Structural Forms do not have uniform stress over the depth of the section? |
A) Membrane
B) Shell
C) Plate
D) Arch
| A beam with uniform strength refers to which of the following? |
A) Where moment of inertia remains same all along the section
B) Where bending stress is uniform at maximum bending moment of the section
C) If the loading passes through the shear centre, the beam doesn’t twist
D) If the beam has two axes of symmetry, the shear center coincides with the centroid
| The assumption that the cross section plane before bending remain plane even after bending means |
A) the strain in the fibres is proportional to their distances from the neutral axis
B) the bending moment will be resisted by the central core of the section
C) the stresses in the fibres are proportional to their distances from the neutral axis
D) the neutral axis lies at mid height
| A simple supported steel I beam is replaced by a C-channel made with aluminum. Both sections have similar moment of inertia and are subjected to same loading. The following will remain true, |
A) The maximum bending stress and deflection will remain unaltered
B) Only the maximum bending stress will remain unaltered
C) Only the maximum deflection will remain unaltered
D) None of the above
| If the areas of cross-section of a square beam and a circular beam subjected to equal bending moments are same then _____ |
A) circular beam is more economical
B) square beam is more economical
C) both the beams are equally strong
D) both the beams are equally economical
| Which of the following statements is not true with respect to shear center? |
A) If the loading passes through the shear centre, the beam doesn’t twist
B) It is a point where the resultant of shear force passes
C) If the beam has two axes of symmetry, the shear center coincides with the centroid
D) In case of a channel section, the shear center lies at the center of the web coinciding with the y axis
| In a simply supported beam, the temperature variation produces |
A) large stresses at the mid section of the beam
B) large stresses at the end section of the beam
C) small stresses throughout the beam
D) zero stresses
| A cantilever beam of T cross-section carries uniformly distributed load. Where does the maximum magnitude of bending stress occur? |
A) At the top of cross-section
B) At the junction of flange and web
C) At the mid-depth point
D) At the bottom of the section
| Which of the following is/are correct with reference to Unsymmetrical Bending? (i) The product of inertia of a section with respect to two perpendicular axes is zero if either one of the axes is an axis of symmetry. (ii) If the product of inertia is zero about two coordinate axes passing through the centroid, then the bending is symmetrical or pure bending. |
A) Only (i)
B) Only (ii)
C) Both (i) & (ii)
D) Neither (i) nor (ii)
