# Civil Engineering - Docks and Harbours

### Exercise :: Docks and Harbours - Section 1

16.

Pick up the correct statement function following:

 A. The coarse material which has a smaller angle of repose, causes a steeper beach slope B. The coarse material which has a greater angle of repose, causes a steeper beach slope C. The flattening out of the beach is caused due to the movement of small and uniform particles leeward. D. both (b) and (c).

Explanation:

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17.

The wavelength is computed by Bertin's formula (where T is the period in seconds).

 A. B. C. D.

Explanation:

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18.

Pick up the correct statement from the following:

 A. The regular periodic rise and fall of the surface of the sea, is called tide. B. The average difference in water level between high tide and low tide at a place, is called tidal range C. The movement of water caused by the action of tide, is called a tidal current D. all of the above.

Explanation:

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19.

Depth of borings for soil investigation, is generally kept below low water level

 A. 30 m B. 35 m C. 45 m D. 40 m

Explanation:

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20.

Which one of the following land marks on the coast line must be depicted on hydrographic maps ?

 A. shore line B. light houses C. church spires D. all the above.