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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