Practice Test: Question Set - 02
1. Pick up the correct statement from the following:
- (A) The point of
intersection of the bending axis with the cross section of the beam, is called
shear centre
- (B) For
I sections, the shear centre coincides with the centroid of the cross section
of the beam
- (C) For
channels, the shear centre does not coincide its centroid
- (D) All the
above
2. Keeping breadth constant, depth of a cantilever of length ‘l’ of uniform strength loaded with uniformly distributed load ‘w’ varies from zero at the free end and
- (A) 2w/σb × l at the fixed end
- (B) √(3w/σb × l) at the fixed end
- (C) √(2w/σb × l) at the fixed end
- (D) 3w/σd × l at the fixed end
3. If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit length over the entire span,
- (A) Horizontal
thrust is wl2/8h
- (B) S.F. will be
zero throughout
- (C) B.M. will be
zero throughout
- (D) All the
above
4. The force in BC of the truss shown in the given figure, is
- (A) 3.0 t compression
- (B) 3.0 t tension
- (C) (3√3/2) t tension
- (D) (3√3/2) t compression
5. P = π2 EI/L2 is the equation for Euler's crippling load if
- (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
6. The degree of indeterminacy of the frame in the given figure, is
- (A) Zero
- (B) 1
- (C) 2
- (D) 3
7. The forces in the members of simple trusses, may be analyzed by
- (A) Graphical
method
- (B) Method
of joints
- (C) Method
of sections
- (D) All the
above
8. A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be
- (A) 2/3
- (B) 3/2
- (C) 5/8
- (D) 8/5
9. A road of uniform cross-section A and length L is deformed by δ, when subjected to a normal force P. The Young's Modulus E of the material, is
- (A) E = P.
δ/A. L
- (B) E = A.
δ/P. L
- (C) E = P.
L/A. δ
- (D) E = P.
A/L. δ
10. In case of a simply supported I-section 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
11. The ratio of maximum shear stress to average shear stress of a circular beam, is
- (A) 2/3
- (B) 3/2
- (C) 3/4
- (D) 4/3
12. For calculating the permissible stress σ0 = σy /[(1 + a(l/r)2] is the empirical formula, known as
- (A) Straight
line formula
- (B) Parabolic
formula
- (C) Perry's
formula
- (D) Rankine's
formula
13. Pick up the correct statement from the following:
- (A) In a loaded
beam, the moment at which the first yield occurs is called yield moment
- (B) In a loaded
beam, the moment at which the entire section of the beam becomes fully plastic,
is called plastic moment
- (C) In a fully
plastic stage of the beam, the neutral axis divides the section in two sections
of equal area
- (D) All the
above
14. For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is
- (A) 0.303
- (B) 0.404
- (C) 0.505
- (D) 0.707
15. Pick up the correct statement from the following:
- (A) Mcg =
M √(M2 + r2) where
letters carry their usual meanings
- (B) Tcp = √(m2 + T2)where
letters carry their usual meanings
- (C) The torque
which when acting alone would produce maximum shear stress equal to the maximum
shear stress caused by the combined bending and torsion, is called equivalent
torque
- (D) All the
above
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