At yield point of a test piece, the material obeys Hooke's law behaves in an ela

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Question
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.

Correct Answer

undergoes plastic deformation.

Theory of Structures problems

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1. 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

2. 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

4. 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).

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. is the equation for Euler's crippling load if
Options
A. both the ends are fixed
B. both the ends are hinged
C. one end is fixed and other end is free
D. one end is fixed and other end is hinged.

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
Options
A.
B.
C.
D.
E. 1.0

10. 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 x 10⁶ N/mm², the deflection of the free end, is
Options
A. 2 mm
B. 3 mm
C. 4 mm
D. 5 mm
E. 6 mm

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