theory-of-structures civil-engineering question and answers -Page 9

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Theory of Structures problems

1. 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
Options
A.
B.
C.
D.

5. The S.F. diagram of a loaded beam shown in the given figure is that of
Options
A. a simply supported beam with isolated central load
B. a simply supported beam with uniformly distributed load
C. a cantilever with an isolated load at the free end
D. a cantilever with a uniformly distributed load.

6. The ratio of shear stress and shear strain of an elastic material, is
Options
A. Modulus of Rigidity
B. Shear Modulus
C. Young's Modulus
D. Modulus of Elasticity
E. both (a) and (b).

8. A simply supported rolled steel joist 8 m long carries a uniformly distributed load over it span so that the maximum bending stress is 75 N/mm2. If the slope at the ends is 0.005 radian and the value of E = 0.2 x 10⁶ N/mm², the depth of the joist, is
Options
A. 200 mm
B. 250 mm
C. 300 mm
D. 350 mm
E. 400 mm

9. 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
Options
A. 0.207
B. 0.307
C. 0.407
D. 0.508

10. At yield point of a test piece, the material
Options
A. obeys Hooke's law
B. behaves in an elastic manner
C. regains its original shape on removal of the load
D. undergoes plastic deformation.

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