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MCQs

Total Questions : 845 | Page 79 of 85 pages
Question 781. Which of the following spillways is least suitable for an earthen dam ?
  1.    shaft spillway
  2.    chute spillway
  3.    ogee spillway
  4.    side channel spillway
 Discuss Question
Answer: Option C. -> ogee spillway
Question 782. 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)
Question 783. If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then
  1.    All listed here
  2.    Total pressure on the surface is equal to ωx̅
  3.    Depth of the centre of pressure is 2/3H vertically below the surface
  4.    Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅
 Discuss Question
Answer: Option A. -> All listed here
Question 784. The "outlet discharge factor" is the duty at the head of
  1.    branch canal
  2.    watercourse
  3.    main canal
  4.    distributory
 Discuss Question
Answer: Option B. -> watercourse
Question 785. A water-logged land is found suitable for cultivation due to
  1.    Ease of tillage for preparation of the field for optimum condition of germination
  2.    Absence of aeration of soil from root zone of the plant
  3.    None of these
  4.    Regular supply of water to plants from the water table by capillary action
 Discuss Question
Answer: Option C. -> None of these
Question 786. The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in
  1.    aqueduct and syphon aqueduct
  2.    aqueduct and super passage
  3.    super passage and canal syphon
  4.    level crossing
 Discuss Question
Answer: Option C. -> super passage and canal syphon
Question 787. If L is total length of a canal in kilometers, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is
  1.    PLC/1000
  2.    PL/1000C
  3.    100 PLC
  4.    PC/100L
 Discuss Question
Answer: Option C. -> 100 PLC
Question 788. An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as
  1.    Flexible modular outlet
  2.    Semi-modular outlet
  3.    Right modular outlet
  4.    Non-modular outlet
 Discuss Question
Answer: Option C. -> Right modular outlet
Question 789. Which of the following methods is used to estimate flood discharge based on high water marks left over in the past ?
  1.    slope-area method
  2.    area-velocity method
  3.    ultra-sonic method
  4.    moving boat method
 Discuss Question
Answer: Option A. -> slope-area method
Question 790. When the reservoir is full, the maximum compressive force in a gravity dam is produced
  1.    at the toe
  2.    at centre of base
  3.    within the middle third of base
  4.    at the heel
 Discuss Question
Answer: Option A. -> at the toe

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