Docks and Harbour Engineering

51. Pick up the incorrect statement from the following:

  1. As a wave of sea water approaches the coast line, it is generally accompanied by a drift of water in the direction of wave advance
  2. The on-shore wind helps to produce wave action as well as rise of M.S.L.
  3. A falling hydraulic gradient occurs in the direction of the wave
  4. The wave while receding carries finer particles out to deep water

Correct answer: (C)
A falling hydraulic gradient occurs in the direction of the wave

52. Pick up the incorrect statement from the following: In a dry dock block made of hard wood,

  1. Spacing of the blocks is 1.35 m
  2. The lowest block is 1.8 m long 40 cm × 40 cm in cross-section
  3. The middle block is 1.6 m long 40 cm × 40 cm in cross-section
  4. None of these

Correct answer: (D)
None of these

53. Select the incorrect statement.

  1. The progress of work in low level method of mound construction is very slow
  2. Barge method of mound construction is economical
  3. In low level method of mound construction, the area of working is limited
  4. In staging method of mound construction, the work is not interrupted even during stormy weather

Correct answer: (B)
Barge method of mound construction is economical

54. Soundings are required for

  1. Making nautical charts for navigation
  2. Ascertaining the areas subject to scour or silting
  3. Obtaining detailed information for construction
  4. All the above

Correct answer: (D)
All the above

55. The beach is built:

  1. With largest material locally available to the waves
  2. With large material locally available to the waves
  3. With fine material locally available to the waves
  4. With finest material locally available to the waves

Correct answer: (A)
With largest material locally available to the waves

56. The difference in height between highest high water and lowest low water is called

  1. Mean range
  2. Maximum range
  3. Maximum rise
  4. Mean rise

Correct answer: (B)
Maximum range

57. The dock wall is designed as a gravity retaining wall and is tested for

  1. Back fill pressure when the dock is empty
  2. Maximum water pressure from the dock without any back fill
  3. The load charge transmitted to the dock by the movement of loaded vehicles or trains on the way
  4. All of the above

Correct answer: (D)
All of the above

58. The fixed mooring does not require

  1. Mooring post
  2. Bollard
  3. Anchors
  4. Capstan

Correct answer: (C)
Anchors

59. The floating mooring does not require

  1. Cables
  2. Anchors
  3. Bollard
  4. Buoy

Correct answer: (C)
Bollard

60. The heaviest line is used to democrat

  1. The low water line
  2. The high water line
  3. The limit of swamps
  4. The direction of current

Correct answer: (B)
The high water line

Previous
Page 6 of 9
Next
Copyright © EngineeringMCQ.com