Docks and Harbours - Section 1 (6)

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Docks and Harbours - Section 1

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41.

If F is the fetch, the straight line distance of open water available in kilometres, the height of the wave in metres is

A.	0.15 √F
B.	0.20 √F
C.	0.28 √F
D.	0.34 √F

Answer: Option D

Explanation:

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42.

At a place the shore line is along North West-South East. The wind is blowing from the north. The littoral drift will be along

A.	south east
B.	south
C.	south west
D.	west
E.	north west

Answer: Option A

Explanation:

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43.

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

A.	break water
B.	break wall
C.	groins
D.	shore wall.

Answer: Option C

Explanation:

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44.

Pick up the correct statement from the following:

A.	The direction of the littoral drift depends upon the direction of the wave with respect to the coastline
B.	The direction of a river opening to the sea determines the direction of no littoral drift
C.	Harbour in the path of littoral drift is not constructed to avoid a build up of sand on one side and erosion on the other
D.	all of the above.

Answer: Option D

Explanation:

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45.

Pick up the correct statement from the following:

A.	For nautical purposes, low water level is generally referred to by the navigators
B.	The depth of the bed of the sea from the surface of water is called sounding
C.	The contour lines on the bed of a water body are called fathoms
D.	All the above.

Answer: Option D

Explanation:

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46.

Flow of air from one place to the other is caused due to

A.	the sum of elevation
B.	pressure head
C.	velocity head
D.	all of the above.

Answer: Option D

Explanation:

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47.

The beach is built:

A.	with largest material locally available to the waves
B.	with large material locally available to the waves
C.	with fine material locally available to the waves
D.	with finest material locally available to the waves.

Answer: Option A

Explanation:

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48.

Buoys which support the cables to which vessels are attached are of

A.	cylindrical shape
B.	drum
C.	pear shaped
D.	spherical shape
E.	all of these.

Answer: Option E

Explanation:

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