civil engineering MCQs – Page 191

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs

3801. Select the correct range of density index,ID ________________?
0

A. 0 < lD < 1

B. 0 < ID < 1

C. ID>0

D. lD>0

3802. At liquid limit, all soils possess________________?
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A. different shear strengths of small magnitude

B. different shear strengths of large magnitude

C. same shear strength of large magnitude

D. same shear strength of small magnitude

3803. In a deposit of normally consolidated clay_________________?
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A. effective stress, water content and undrained strength decrease with depth

B. effective stress and undrained strength increase with depth but water content decreases with depth

C. effective stress and water content increase with depth but undrained strength decreases with depth

D. effective stress increases with depth but water content of soil and un-drained strength decrease with depth

3804. The degree of kinematic indeterminacy of a pin-jointed space frame is_____________?
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A. re j is number of joints and r is reaction components

B. 2j-r

C. j-3r

D. j-2r

E. 3j-r

3805. In column analogy method, the area of an analogous column for a fixed beam of span L and flexural rigidity El is taken as__________________?
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A. L/3EI

B. L/2EI

C. L/4EI

D. L/EI

3806. Which of the following methods of structural analysis is a force method ?
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A. none of the above

B. column analogy method

C. moment distribution method

D. slope deflection method

3807. The deflection at any point of a perfect frame can be obtained by applying a unit load at the joint in_________________?
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A. inclined direction

B. the direction in which the deflection is required

C. vertical direction

D. horizontal direction

3808. Select the correct statement?
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A. Flexibility matrix is a square symmetrical matrix

B. Stiffness matrix is a square symmetrical matrix

C. both A. and B.

D. none of the above

3809. When a uniformly distributed load, shorter than the span of the girder, moves from left to right, then the conditions for maximum bending moment at a section is that___________________?
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A. the head of the load reaches the section

B. the tail of the load reaches the section

C. the load position should be such that the section divides it equally on both sides

D. the load position should be such that the section divides the load in the same ratio as it divides the

3810. Castiglianos first theorem is applicable_______________?
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A. for statically determinate structures only

B. only when principle of superposition is valid

C. when the system behaves elastically

D. none of the above

3811. The degree of static indeterminacy of a rigid-jointed space frame is_________________?
0

A. 3m + r 3j

B. m + r 2j

C. 6m + r 6j

D. m + r 3j

E. re m, r and j have their usual meanings

3812. For a single point load W moving on a symmetrical three hinged parabolic arch of span L, the maximum sagging moment occurs at a distance x from ends. The value of x is__________________?
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A. 0.25 L

B. 0.234 L

C. 0.5 L

D. 0.211 L

3813. If in a pin-jointed plane frame (m + r) > 2j, then the frame is________________?
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A. none of the above

B. unstable

C. stable and statically determinate

D. re m is number of members, r is reaction components and j is number of joints

E. stable and statically indeterminate

3814. Bending moment at any section in a conjugate beam gives in the actual beam_________________?
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A. deflection

B. slope

C. bending moment

D. curvature

3815. The width of the analogous column in the method of column analogy is _________________?
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A. 2/EI

B. 1/EI

C. 1/4 EI

D. 1/2 EI

3816. The deformation of a spring produced by a unit load is called _________________?
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A. flexibility

B. unit strain

C. influence coefficient

D. stiffness

3817. When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when________________?
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A. none of the above

B. the wheel load under consideration is midway between the centre of span and the centre of gravity of the load system

C. the centre of gravity of the load system is midway between the centre of span and wheel load under consi-deration

D. the centre of span is midway between the centre of gravity of the load system and the wheel load under consideration

3818. When a uniformly distributed load, longer than the span of the girder, moves from left to right, then the maximum bending moment at mid section of span occurs when the uniformly distributed load occupies_______________?
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A. more than the left half span

B. whole of left half span

C. whole span

D. less than the left half span

3819. The number of independent equations to be satisfied for static equilibrium in a space structure is___________________?
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A. 6

B. 2

C. 3

D. 4

3820. While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of__________________?
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A. infinite length

B. none of the above

C. zero moment of inertia

D. zero length

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