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MCQs

Total Questions : 605 | Page 5 of 61 pages
Question 41. 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
  1.    1/7
  2.    2/7
  3.    3/7
  4.    2/5
 Discuss Question
Answer: Option B. -> 2/7
Question 42. The assumption in the theory of bending of beams is:
  1.    Material is homogeneous
  2.    Material is isotropic
  3.    Young’s modulus is same in tension as well as in compression
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 43. A steel rod 1 metre long having square cross section is pulled under a tensile load of 8 tonnes. The extension in the rod was 1 mm only. If Esteel = 2 × 106 kg/cm², the side of the rod, is
  1.    1 cm
  2.    1.5 cm
  3.    2 cm
  4.    2.5 cm
 Discuss Question
Answer: Option C. -> 2 cm
Question 44. 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
  1.    WL3/3EL
  2.    WL3/8EL
  3.    WL3/24EL
  4.    WL3/48EL
 Discuss Question
Answer: Option D. -> WL3/48EL
Question 45. The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘R’ carrying
  1.    A uniformly distributed load ? per unit run over its right half span, is ? ?R/?
  2.    A uniformly distributed load ? per unit run over its entire span is 4/3 ?R/?
  3.    A distributed load varying from zero at the left end to ? per unit horizontal run at the right end, is ? ?R/?
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 46. For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is
  1.    0.303
  2.    0.404
  3.    0.505
  4.    0.707
 Discuss Question
Answer: Option D. -> 0.707
Question 47. H V are the algebraic sums of the forces resolved horizontally and vertically respectively, M is the algebraic sum of the moments of forces about any point, for the equilibrium of the body acted upon
  1.    H = 0
  2.    V = 0
  3.    M = 0
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 48. The ratio of crippling loads of a column having both the ends fixed to the column having both the ends hinged, is
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option D. -> 4
Question 49. The equivalent length of a column of length L, having both the ends hinged, is
  1.    2L
  2.    L
  3.    L/2
  4.    L/√2
 Discuss Question
Answer: Option B. -> L
Question 50. There are two hinged semicircular arches A, B and C of radii 5 m, 7.5 m and 10 m respectively and each carries a concentrated load W at their crowns. The horizontal thrust at their supports will be in the ratio of
  1.    1 : 1½ : 2
  2.    2 : 1½ : 1
  3.    1 : 1 : 2
  4.    None of these
 Discuss Question
Answer: Option C. -> 1 : 1 : 2

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