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MCQs

Total Questions : 605 | Page 9 of 61 pages
Question 81. The ratio of the stresses produced by a suddenly applied load and by a gradually applied load on a bar, is
  1.    1/4
  2.    1/2
  3.    1
  4.    2
 Discuss Question
Answer: Option D. -> 2
Question 82. 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.    1½
  4.    2
 Discuss Question
Answer: Option D. -> 2
Question 83. For the close coil helical spring of the maximum deflection is
  1.    WD3n/d4N
  2.    2WD3n/d4N
  3.    4W²D3n/d4N
  4.    8WD3n/d4N
 Discuss Question
Answer: Option D. -> 8WD3n/d4N
Question 84. 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.    1.125 cm³
  2.    2.125 cm³
  3.    3.125 cm³
  4.    4.125 cm²
 Discuss Question
Answer: Option C. -> 3.125 cm³
Question 85. Stress may be defined as
  1.    Force per unit length
  2.    Force per unit volume
  3.    Force per unit area
  4.    None of these
 Discuss Question
Answer: Option C. -> Force per unit area
Question 86. The vertical reaction for the arch is
  1.    wa/2l
  2.    wl/a
  3.    wa/l
  4.    wa²/2l
 Discuss Question
Answer: Option A. -> wa/2l
Question 87. If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:
  1.    Q = S + F
  2.    Q = S – F
  3.    Q = F – S
  4.    Q = S × F
 Discuss Question
Answer: Option D. -> Q = S × F
Question 88. Pick up the correct statement from the following:
  1.    For a uniformly distributed load, the shear force varies linearly
  2.    For a uniformly distributed load, B.M. curve is a parabola
  3.    For a load varying linearly, the shear force curve is a parabola
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 89. The locus of the end point of the resultant of the normal and tangential components of the stress on an inclined plane, is
  1.    Circle
  2.    Parabola
  3.    Ellipse
  4.    Straight line
 Discuss Question
Answer: Option C. -> Ellipse
Question 90. 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
  1.    wa/27
  2.    wa²/27
  3.    w²a
  4.    wa²
 Discuss Question
Answer: Option D. -> wa²

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