Docks and Harbours MCQs
Docks and Harbours MCQs
Try to answer these 20 Docks and Harbours MCQs and check your understanding of the Docks and Harbours subject.
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1: Which one of the following statements is correct?
A. The soundings are made with respect to the mean low water
B. The soundings which are below the datum are written in black on the map
C. The decimal point of the sounding value is at the exact position of the sounding
D. The spot heights of the features above datum are written in red on the map
2: The heaviest line is used to democrate
A. The high water line
B. The direction of current.
C. The low water line
D. The limit of swamps
3: The shore line survey includes:
A. Depicting the high water line
B. Depicting the prominent details on shore line
C. Depicting the shore line
D. Depicting the low water line
4: Littoral drift
A. Is the slow movement of surface water at sea caused by the wind
B. Is the raised line of sand, parallel to the sea coast
C. Is a current perpendicular to the shore line caused due to wind.
D. Is a current parallel to the shore, caused due to tangential component of the wind
5: Soundings are required for
A. All these
B. Ascertaining the areas subject to scour or silting
C. Making nautical charts for navigation
D. Obtaining detailed information for construction
6: Pick Up the correct statement from the following:
A. Dredging
B. The operation of removing material from the sea or river bed is known as
C. None of these.
D. Digging
7: The beach is built:
A. With fine material locally available to the waves
B. With large material locally available to the waves
C. With finest material locally available to the waves.
D. With largest material locally available to the waves
8: A harbour is a place where
A. Port buildings are constructed for commercial purposes
B. All these
C. Facilities are provided for receiving cargo and passengers
D. Ships get shelter and protection against destructive forces due to sea waves
9: On a hydrographic map, the following feature is shown:
A. Depth contours
B. Datum
C. High and low water lines
D. Land and water areas
10: Pick up the correct statement from the following:
A. Three types of break waters are generally provided in harbours
B. All of these
C. The breakwater which can be used as a platform for loading and unloading of cargo is called a mole
D. The brick masonry retaining wall which is used for loading and unloading of cargo is called guay wall
11: The smoothened surface of the front face of the guay walls, is known as fending which is made of
A. Timber
B. All these
C. Granite stone
D. Steel
12: 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 west
B. West
C. North west
D. South
E. South east
13: Which one of the following lines is used for tying a ship with a dock
A. Break line
B. Spring line
C. Bow line
D. Stern line
14: Flow of air from one place to the other is caused due to
A. Velocity head
B. Pressure head
C. All of these
D. The sum of elevation
15: Choose the correct statement from the following:
A. The Red sea is considered to be harbour
B. The Caspean sea is considered to be a big harbour
C. The Mediterranean sea is considered to be a huge harbour
D. None of these
16: Pick 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. All of these
C. The direction of a river opening to the sea determines the direction of no littoral drift
D. 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
17: Surf zone is:
A. The fathom line of 5 m depth
B. The fathom line of 10 m depth
C. The coast line attacked by the waves.
D. The swell of the sea breaking on the shore or reefs
18: 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 these
19: The low water datum for a lake is defined as the surface of the lake when it is at elevation
A. 190.5 m above M.S.L.
B. 180.5 m above M.S.L.
C. 200.0 m above M.S.L.
D. 170.5 m above M.S.L.
20: For location of soundings a range and one angle from the shore involves the following operations. Which one is correct?
A. A range line is established
B. The first and the last soundings and every tenth soundings are fixed by angular observations
C. The intermediate soundings are fixed by the time intervals
D. All these
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Docks and Harbours MCQs
