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MCQs

Total Questions : 123 | Page 5 of 13 pages
Question 41. In Sutro weir the discharge is proportional to
  1.    H
  2.    H^1/2
  3.    H^3/2
  4.    H^5/2
 Discuss Question
Answer: Option A. -> H


H


Question 42. A fluid is a substance that
  1.    always expands until it fills any container
  2.    is parctically incompressible
  3.    cannot remain at rest under the action of a shear force
  4.    cannot be subjected to shear forces
 Discuss Question
Answer: Option C. -> cannot remain at rest under the action of a shear force


cannot remain at rest under the action of a shear force


Question 43. Mean velocity of flow in a river can be directly measured by means of
  1.    Boats
  2.    Dams
  3.    Surface floats
  4.    Rod floats
 Discuss Question
Answer: Option D. -> Rod floats


Rod floats


Question 44. Sliding failure occurs in a solid gravity dam when
  1.    Resultant of all forces cuts the base of the dam outside
  2.    Resultant of all force cuts the base of the inner middle third point
  3.    Ratio of overturning moments exceeds one
  4.    Shear friction factor is less than 1.5
 Discuss Question
Answer: Option D. -> Shear friction factor is less than 1.5


Shear friction factor is less than 1.5


Question 45. The shear stress intensity is minimum at
  1.    axis of shaft
  2.    surface of the shaft
  3.    any inside layer of shaft
  4.    all the above
 Discuss Question
Answer: Option A. -> axis of shaft


axis of shaft


Question 46. A steel member which is subjected to primary tension is called
  1.    Tie
  2.    Tie or beam
  3.    Strut
  4.    Sling
 Discuss Question
Answer: Option A. -> Tie


Tie


Question 47. The formula T/J = NO/L = fs/r when applied to torsion of closely coiled helical spring, the value of J will be calculated with
  1.    mean diameter of the coil D
  2.    the diameter of wire of spring
  3.    mean of D and d
  4.    (2D + d)3
 Discuss Question
Answer: Option B. -> the diameter of wire of spring


the diameter of wire of spring


Question 48. The shear stress intensity changes from the centre to the surface of the shaft with
  1.    uniform rate
  2.    varying rate
  3.    remains same
  4.    all the above
 Discuss Question
Answer: Option B. -> varying rate


varying rate


Question 49. For an isotropic, homogeneous and elastic material obeying Hook's law, number of independent elastic constants is
  1.    2
  2.    3
  3.    4
  4.    1
 Discuss Question
Answer: Option A. -> 2


2


Question 50. If the Young's modulus of elasticity of a material is twice its modulus of rigidity, then the poisson's ratio of the material is
  1.    -1
  2.    -0.5
  3.    0.5
  4.    0
 Discuss Question
Answer: Option C. -> 0.5


0.5


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