Theory of Structures Objective Type Questions - Set 11 - ObjectiveBooks

Theory of Structures Objective Type Questions - Set 11

Practice Test: Question Set - 11

1. The vertical reaction for the arch is
    (A) wa/2l
    (B) wl/a
    (C) wa/l
    (D) wa2/2l

2. Flat spiral springs
    (A) Consist of uniform thin strips
    (B) Are supported at outer end
    (C) Are wound by applying a torque
    (D) All the above

3. In plastic analysis, the shape factor for a circular section, is
    (A) 1.5
    (B) 1.6
    (C) 1.7
    (D) 1.75

4. In case of a simply supported rectangular beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is
    (A) L/2
    (B) L/3
    (C) L/4
    (D) L/5

5. Pick up the correct statement from the following:
    (A) Hoop strain of the walls of a cylinder due to liquid is (pd/2tE) (1 - 1/2m)
    (B) Longitudinal strain in the walls of a cylinder due to liquid is (pd/2tE) (1/2 - 1/m)
    (C) Volumetric change in the cylinder due to liquid is (pd/2tE) (5/2 - 2/m)
    (D) All the above

6. The stiffness of the close coil helical spring is
    (A) d4N/8D3n
    (B) d4N/4D3n
    (C) 4D3N/d4n
    (D) 8D3N/d4n

7. The ratio of the deflections of the free end of a cantilever due to an isolated load at 1/3rd and 2/3rd of the span, is
    (A) 1/7
    (B) 2/7
    (C) 3/7
    (D) 2/5

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. The ratio of moments of inertia of a triangular section about its base and about a centroidal axis parallel to its base, is
    (A) 1.0
    (B) 1.5
    (C) 2.0
    (D) 3.0

10. The ratio of shear stress and shear strain of an elastic material, is
    (A) Modulus of Rigidity
    (B) Shear Modulus
    (C) Modulus of Elasticity
    (D) Both (a) and (b)

11. For permissible shear stress fs, the torque transmitted by a thin tube of mean diameter D and wall thickness t, is
    (A) (πD2/2) t fs
    (B) (πD/2) t fs
    (C) πD2t fs
    (D) (πD2t2/4) fs

12. At yield point of a test piece, the material
    (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

13. For the close coil helical spring of the maximum deflection is
    (A) WD3n/d4N
    (B) 2WD3n/d4N
    (C) 4W2D3n/d4N
    (D) 8WD3n/d4N

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