theory of structures MCQs – Page 2

Practise focused theory of structures questions with marked answers for exam preparation and subject revision.

theory of structures Mcqs
21. 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

22. 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

23. 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)

24. 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_________________?
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A. 2W/ha

B. Wa/2h

C. Wa/h

D. 2h/Wa

25. Total strain energy theory for the failure of a material at elastic limit, is known_________________?
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A. St. Venants theory

B. Haigs theory

C. Guests or Trecas theory

D. Rankines theory

26. The maximum deflection due to a load W at the free end of a cantilever of length L and having flexural rigidity EI, is_____________?
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A. WL/2EI

27. The equivalent length is of a column of length having both the ends fixed, is_________________?
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A. L

B. L

C. 2 L

D. L/2
28. The ratio of maximum and average shear stresses on a rectangular section, is________________?
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A. 1

B. 2.5

C. 1.5

D. 1.25

29. The maximum deflection of a simply supported beam of span L, carrying an isolated load at the centre of the span; flexural rigidity being EI, is______________?
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A. WL3/24EL

B. WL3/8EL

C. WL3/3EL

D. WL3/48EL
30. Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as________________?
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A. Composite beams

B. Indeterminate beams

C. Determinate beams

D. Compound beams

31. Pick up the correct statement from the following?
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A. The pitch of a close coil spring, is very small

B. A wire wound in spiral form, is called a helical spring

C. All the above

D. The angle made by the coil with horizontal, is called the angle of helix

32. The general expression for the B.M. of a beam of length l is the beam carries M = (wl/2) x (wx/2)_______________?
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A. A load varying linearly from zero at one end to w at the other end

B. An isolated load at mid span

C. A uniformly distributed load w/unit length

D. None of these

33. The locus of reaction of a two hinged semi-circular arch, is_________________?
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A. Straight line

B. Parabola

C. Hyperbola

D. Circle

34. A shaft rotating N.R.M. under a torque T, transmits a power_______________?
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A. /60 Newton metres/sec

B. /30 Newton metres/sec

C. /60 Newton metres/min

D. /30 Newton metres/min

35. Maximum strain theory for the failure of a material at the elastic limit, is known as_______________?
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A. Rankines theory

B. Guests or Trecas theory

C. Haigs theory

D. St. Venants theory
36. inertia of a rectangular section of width and depth about an axis passing The moment of through C.G. and parallel to its width is_______________?
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A. BD3/12

B. BD/6

C. BD3/6

D. BD/6

37. The ratio of lateral strain to axial strain of a homogeneous material, is known___________________?
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A. Poissons ratio

B. Plastic ratio

C. Hookes ratio

D. Yield ratio

38. The locus of the moment of inertia about inclined axes to the principal axis, is______________?
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A. Ellipse

B. Parabola

C. Circle

D. Straight line

39. Co-efficient of wind resistance of a circular surface, is________________?
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A. 2-Jan

B. 2-Mar

C. 3-Jan

D. 2/3
40. To determine the force in BD of the truss shown in the given figure a section is passed through BD, CD and CE, and the moments are taken about________________?
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A. C joint

B. A joint

C. D joint

D. B joint