docks-and-harbours civil-engineering question and answers -Page 3

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Docks and Harbours problems

1. 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.

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.

3. 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.

4. 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.

5. 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.

6. 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.

8. 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.

9. 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.

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