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Civil Engineering - Docks and Harbours

Exercise : Docks and Harbours - Section 1
46.
Pick up the incorrect statement from the following:
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
The on-shore wind helps to produce wave action as well as rise of M.S.L.
A falling hydraulic gradient occurs in the direction of the wave
The wave while receding carries finer particles out to deep water.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
In a wet dock system,
minimum required depth of water for the vessels is maintained
entrance locks are provided with massive gates
the locks of dock gate are operated by means of heavy bascule bridges and connected machinery
the cost of construction is quite heavy
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
A roadstead :
is a protected area of water where boats can move safely
is the end of the road at the harbour
may be protected by break water walls
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
The width of the entrances of the harbours is restricted to
100 m
125 m
150 m
180 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Pick up the correct statement from the following:
The tides at any place occur a little less than 1 hour later, each succeeding day
The difference in time in solar hours and minutes from any lunar transit to the succeeding transit, is called high water level
The influence of the earth's gravity alone produces level-tidal less sea
The spinning force is maximum at the equator and zero at the poles
All of the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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