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  • Question
  • Pick up the correct statement from the following:


  • Options
  • A. The tides at any place occur a little less than 1 hour later, each succeeding day
  • B. The difference in time in solar hours and minutes from any lunar transit to the succeeding transit, is called high water level
  • C. The influence of the earth's gravity alone produces level-tidal less sea
  • D. The spinning force is maximum at the equator and zero at the poles
  • E. All of the above.

  • Correct Answer
  • All of the above. 


  • Docks and Harbours problems


    Search Results


    • 1. The low water datum for a lake is defined as the surface of the lake when it is at elevation

    • Options
    • A. 180.5 m above M.S.L.
    • B. 190.5 m above M.S.L.
    • C. 170.5 m above M.S.L.
    • D. 200.0 m above M.S.L.
    • Discuss
    • 2. Pick up the correct statement from the following:

    • Options
    • A. a harbour without any port complex, is called a refuge harbour
    • B. a harbour used for fishery, is called fishery harbour
    • C. the terminal building of a commercial harbour consists of an administrative block, customs clearance and ware-houses.
    • D. all the above.
    • Discuss
    • 3. A low wall built out into the sea more or less perpendicular to the coast line, to resist the travel of sand and shingle along a beach, is called

    • Options
    • A. break water
    • B. break wall
    • C. groins
    • D. shore wall.
    • Discuss
    • 4. Flow of air from one place to the other is caused due to

    • Options
    • A. the sum of elevation
    • B. pressure head
    • C. velocity head
    • D. all of the above.
    • Discuss
    • 5. P and Q are two stations on the shore line at distance d. If the angle between Q and the boat O and P is a and the angle between P and Q at boat O is ?, the x and y. Coordinate along PQ and perpendicular to PQ from O are :

    • Options
    • A.
    • B.
    • C.
    • D. none of the above.
    • Discuss
    • 6. In a wet dock system,

    • Options
    • A. minimum required depth of water for the vessels is maintained
    • B. entrance locks are provided with massive gates
    • C. the locks of dock gate are operated by means of heavy bascule bridges and connected machinery
    • D. the cost of construction is quite heavy
    • E. all the above.
    • Discuss
    • 7. Pick up the incorrect statement from the following: In a dry dock block made of hard wood,

    • Options
    • A. spacing of the blocks is 1.35 m
    • B. the lowest block is 1.8 m long 40 cm x 40 cm in cross-section
    • C. the middle block is 1.6 m long 40 cm x 40 cm in crosss-section
    • D. the top block is 1.2 m long 40 cm x 40 cm in cross-section
    • E. none of these.
    • Discuss
    • 8. Buoys which support the cables to which vessels are attached are of

    • Options
    • A. cylindrical shape
    • B. drum
    • C. pear shaped
    • D. spherical shape
    • E. all of these.
    • Discuss
    • 9. Pick up the correct statement from the following:

    • Options
    • A. the Mediterranean sea is considered to be a huge harbour
    • B. the Caspean sea is considered to be a big harbour
    • C. the Red sea is considered to be harbour
    • D. none of the above.
    • Discuss
    • 10. Which one of the following statements is not relevant to hydrographic survey :

    • Options
    • A. establishment of a chain of bench marks near the shore line
    • B. establishment of horizontal control points on the shore
    • C. determination of the sea bed profile
    • D. depicting the irregularities in the shore line, islands and projecting rocks
    • E. none of these.
    • Discuss


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