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MCQs

Total Questions : 605 | Page 56 of 61 pages
Question 551. The ratio of moments of inertia of a triangular section about its base and about a centroidal axis parallel to its base, is
  1.    2
  2.    1
  3.    3
  4.    1.5
 Discuss Question
Answer: Option C. -> 3
Question 552. 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
  1.    B²D/6
  2.    BD²/6
  3.    BD³/6
  4.    BD³/12
 Discuss Question
Answer: Option D. -> BD³/12
Question 553. The maximum deflection due to a load W at the free end of a cantilever of length L and having flexural rigidity EI, is
  1.    WL3/2EI
  2.    WL²/2EI
  3.    WL3/3EI
  4.    WL²/3EI
 Discuss Question
Answer: Option C. -> WL3/3EI
Question 554. A two hinged parabolic arch of span l and rise h carries a load varying from zero at the left end to ? per unit run at the right end. The horizontal thrust is
  1.    ωl²/16h
  2.    ωl²/8h
  3.    ωl²/4h
  4.    ωl²/12h
 Discuss Question
Answer: Option A. -> ωl²/16h
Question 555. The ratio of the stresses produced by a suddenly applied load and by a gradually applied load on a bar, is
  1.    2
  2.    1/4
  3.    1/2
  4.    1
 Discuss Question
Answer: Option A. -> 2
Question 556. For the close coil helical spring of the maximum deflection is
  1.    8WD3n/d4N
  2.    WD3n/d4N
  3.    4W²D3n/d4N
  4.    2WD3n/d4N
 Discuss Question
Answer: Option A. -> 8WD3n/d4N
Question 557. A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm² and Poisson’s ratio is 0.25, the change in the volume of the bar is:
  1.    3.125 cm³
  2.    4.125 cm²
  3.    1.125 cm³
  4.    2.125 cm³
 Discuss Question
Answer: Option A. -> 3.125 cm³
Question 558. The ratio of circumferential stress to the longitudinal stress in the walls of a cylindrical shell, due to flowing liquid, is
  1.    ½
  2.    1
  3.    2
  4.    1½
 Discuss Question
Answer: Option C. -> 2
Question 559. Stress may be defined as
  1.    Force per unit area
  2.    Force per unit length
  3.    None of these
  4.    Force per unit volume
 Discuss Question
Answer: Option A. -> Force per unit area
Question 560. The locus of the end point of the resultant of the normal and tangential components of the stress on an inclined plane, is
  1.    Parabola
  2.    Straight line
  3.    Circle
  4.    Ellipse
 Discuss Question
Answer: Option D. -> Ellipse

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