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MCQs

Total Questions : 845 | Page 4 of 85 pages
Question 31. River training for depth is achieved by
  1.    groynes
  2.    construction of dykes or leavees
  3.    both (A) and (B)
  4.    groynes and bandalling
 Discuss Question
Answer: Option D. -> groynes and bandalling
Question 32. For designing the venturi head,
  1.    Width of the throat should not be less than one-third of the bed width of main canal
  2.    Length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
  3.    Minimum throat width should not be less than 60 cm
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 33. If the intensity of rainfall is more than the infiltration capacity of soil, then the infiltration rate will be
  1.    equal to rate of rainfall
  2.    equal to infiltration capacity
  3.    more than rate of rainfall
  4.    more than infiltration capacity
 Discuss Question
Answer: Option B. -> equal to infiltration capacity
Question 34. For the stability of a structure against seepage pressure according to Khosla's creep theory, the critical gradient is
  1.    Zero
  2.    0.25
  3.    0.50
  4.    1.00
 Discuss Question
Answer: Option D. -> 1.00
Question 35. A hydraulic jump is generally formed when a stream moving with
  1.    A hyper-critical velocity meets a stream moving with a critical velocity
  2.    A hyper-critical velocity meets a stream moving with a hyper-critical velocity
  3.    A hyper-critical velocity meets a stream moving with a sub-critical velocity
  4.    A sub-critical velocity meets a stream moving with a hyper-critical velocity
 Discuss Question
Answer: Option C. -> A hyper-critical velocity meets a stream moving with a sub-critical velocity
Question 36. Hydrodynamic pressure due to earthquake acts at a height of
  1.    3H/4π above the base
  2.    3H/4π below the water surface
  3.    4H/3π above the base
  4.    4H/3π below the water surface, where H is the depth of water
 Discuss Question
Answer: Option C. -> 4H/3π above the base
Question 37. The maximum permissible eccentricity for no tension at the base of a gravity dam is
  1.    B/2
  2.    B/3
  3.    B/4
  4.    B/6
 Discuss Question
Answer: Option D. -> B/6
Question 38. Which of the following spillways is least suitable for an earthen dam ?
  1.    ogee spillway
  2.    chute spillway
  3.    side channel spillway
  4.    shaft spillway
 Discuss Question
Answer: Option A. -> ogee spillway
Question 39. The major resisting force in a gravity dam is
  1.    water pressure
  2.    wave pressure
  3.    self-weight of dam
  4.    uplift pressure
 Discuss Question
Answer: Option C. -> self-weight of dam
Question 40. Coefficient of discharge of an ogee spillway
  1.    depends on depth of approach and upstream slope
  2.    depends on downstream apron interference and downstream submergence
  3.    remains constant
  4.    both (A) and (B)
 Discuss Question
Answer: Option D. -> both (A) and (B)

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