Docks And Harbor Engineering MCQ

Test your knowledge with important Docks And Harbor Engineering MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Docks And Harbor Engineering MCQs on Bissoy. Bissoy App

• The difference in height between highest high water and lowest low water is called
  ক

  Mean range

  খ

  Maximum range

  গ

  Maximum rise

  ঘ

  Mean rise
• If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by
  ক

  0.6 Hs and 1.67 Hs

  খ

  0.6 Hs and 1.87 Hs

  গ

  1.27 Hs and 1.87 Hs

  ঘ

  1.27 Hs and 1.67 Hs
• As per Stevenson’s empirical formula, the approximate value of the height of the wave in metres is given by (where F is the fetch in km.)
  ক

  0.34 VF

  খ

  0.5 VF

  গ

  1.5 VF

  ঘ

  3.4 VF
• Which of the following type of sea walls results in greatest protection of shore structures?
  ক

  vertical sea wall

  খ

  sea wall with batter

  গ

  stepped sea wall

  ঘ

  sea wall with concave face
• In multiple point mooring system, vessel is secured to minimum of
  ক

  Two points

  খ

  Four points

  গ

  Six points

  ঘ

  Eight points
• Which of the following are repair docks ?
  ক

  marine railways, dry docks, floating docks, wet docks

  খ

  dry docks, wet docks, floating docks, lift docks

  গ

  wet docks, floating docks, lift docks, marine railways

  ঘ

  wet docks, lift docks, marine railways, dry docks
• A ship strikes the berth generally at an angle
  ক

  90° with the face of the dock

  খ

  45° with the face of the dock

  গ

  30° with the face of the dock

  ঘ

  10° with the face of the dock
• Which of the following is a fixed type mooring accessory ?
  ক

  bollard

  খ

  buoys

  গ

  cables

  ঘ

  anchors
• When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called
  ক

  Surf

  খ

  Clapotis

  গ

  Fetch

  ঘ

  Swell
• The most popular method of construction of wall breakwaters is
  ক

  Barge method

  খ

  Staging method

  গ

  Low level method

  ঘ

  none of the above
• Minimum width of ship clearance shall be (where “B” is beam of the design vessel)
  ক

  B or 30 m

  খ

  1.5 B or 50 m

  গ

  1.5 B

  ঘ

  50 m
• A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.
  ক

  Dry dock

  খ

  Wet dock

  গ

  Floating dock

  ঘ

  Refuge dock
• Which of the following structures protects the shore by trapping of littoral drift?
  ক

  groynes

  খ

  sea walls

  গ

  revetments

  ঘ

  moles
• If H is the height of the wave expected, then the height of the breakwater is generally taken as
  ক

  1.2 H to 1.25 H above the datum

  খ

  1.2 H to 1.25 H above the low water level

  গ

  1.2 H to 1.25 H above the high water level

  ঘ

  1.2 H to 1.25 H above the mean sea level
• As compared to wall type breakwater, mound type breakwater
  ক

  Requires skilled labor

  খ

  Requires low maintenance cost

  গ

  Requires less material

  ঘ

  Results in less damage due to gradual failure
• For designing the dock, the proportion of ship load assumed to be borne by keel blocks is
  ক

  $$\frac{5}{8}$$

  খ

  $$\frac{3}{8}$$

  গ

  $$\frac{3}{{16}}$$

  ঘ

  $$\frac{5}{{16}}$$
• Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?
  ক

  When the dock is empty

  খ

  When the dock is empty with the ship of maximum tonnage

  গ

  When the dock is full of water

  ঘ

  When the dock is dry and is under construction
• In a two lane channel, bottom width of channel is given by
  ক

  Manoeuvring lane + (2 × Bank clearance lane)

  খ

  (2 × Manoeuvring lane) + (2 × Bank clearance lane)

  গ

  (2 × Manoeuvring lane) + (2 × Bank clearance lane + ship clearance lane)

  ঘ

  Manoeuvring lane + (2 × Bank clearance lane) + ship clearance lane
• The significant wave height is defined is the average height of the
  ক

  one – third highest waves

  খ

  one – fourth highest waves

  গ

  one – fifth highest waves

  ঘ

  one – tenth highest waves
• Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area?
  ক

  Sea walls, bulk heads and groynes

  খ

  Sea walls, bulk heads and revetments

  গ

  Sea walls, revetments and groynes

  ঘ

  Bulk heads, revetments and groynes
• When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as
  ক

  Beam

  খ

  Depth

  গ

  Free-board

  ঘ

  Draft
• In basins subjected to strong winds and tide, the length of the berthing area should not be less than
  ক

  The length of design vessel

  খ

  The length of design vessel + 10% clearance between adjacent vessels

  গ

  The length of design vessel + 20% clearance between adjacent vessels

  ঘ

  Twice the length of design vessel