civil engineering MCQs – Page 279

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 Review each marked answer and report any item that may be outdated or unclear.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

5561. The forces acting normally on the cross section of a bar shown in the given figure introduce_____________?
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A. Compressive stress

B. None of these

C. Tensile stress

D. Shear stress

5562. In the truss shown in the given figure, the force in member BC is______________?
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A. 100 t compressive

B. Indeterminate

C. 100 t tensile

D. Zero

5563. cross sections of bronze and copper bars of equal lengt b c are their Ab and Ac are the respective stresses due to load P. If Pb and Pc are the loads shared by them, (where Eb and Ec are their modulii)____________________?
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A. b c = Eb /Ec

B. P = Pb + Pc

C. P = Ab b + Ac b

D. All the above

5564. A material is said to be perfectly elastic if__________________?
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A. None of these

B. It regains its original shape partially on removal of the load

C. It does not regain its original shape at all

D. It regains its original shape on removal of the load

5565. Pick up the correct statement from the following?
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A. All the above

B. For a load varying linearly, the shear force curve is a parabola

C. For a uniformly distributed load, B.M. curve is a parabola

D. For a uniformly distributed load, the shear force varies linearly

5566. The force in BC of the truss shown in the given figure, is___________________?
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A. 3.0 t tension

B. 3.0 t compression

C. t compression

D. t tension

5567. 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___________________?
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A. 4-Jan

B. 1/2

C. 8-Jan

D. 3-Jan

5568. The radius of gyration of a rectangular section (depth D, width B) from a centroidal axis parallel to the width is__________________?
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A. D/2

B. D

C. D

D. D

5569. A simply supported beam carries varying load from zero at one end and w at the other end. If the length of the beam is a, the maximum bending moment will be_______________?
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A. wa

B. wa/27

C. wa

D. wa/27

5570. The locus of the end point of the resultant of the normal and tangential components of the stress on an inclined plane, is________________?
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A. Straight line

B. Circle

C. Ellipse

D. Parabola

5571. Pick up the correct statement from the following?
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A. All the above

B. Mcg = M M2 + r2) 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. Tcp = m2 + T2)where letters carry their usual meanings

5572. constant, depth of a cantilever of length of uniform strength loaded with Keeping breadth uniformly distributed load varies from zero at the free end and________________?
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A. 3w l at the fixed end

B. 2w w l at the fixed end

C. l) at the fixed end

D. w l) at the fixed end

5573. If and are external and internal diameters of a circular shaft respectively, its polar moment of inertia, is________________?
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A. D4 d4)

B. D4 d4)

C. D4 d4)

D. D4 d4)

5574. An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of span 2l and rise h hinged at the crown, the horizontal reaction at the support, is_________________?
0