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Docks and Harbours MCQ Questions & Answers

Docks and Harbours MCQs : This section focuses on the "Docks and Harbours". These Multiple Choice Questions (MCQs) should be practiced to improve the Docks and Harbours skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

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

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Question 2

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.

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Question 3

Soundings are required for

A. making nautical charts for navigation
B. ascertaining the areas subject to scour or silting
C. obtaining detailed information for construction
D. all the above.

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Question 4

Pick up the incorrect statement from the following:

A. 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
B. The on-shore wind helps to produce wave action as well as rise of M.S.L.
C. A falling hydraulic gradient occurs in the direction of the wave
D. The wave while receding carries finer particles out to deep water.

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Question 5

The width of the entrances of the harbours is restricted to

A. 100 m
B. 125 m
C. 150 m
D. 180 m

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Question 6

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

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Question 7

Pick up the correct statement from the following:

A. The breakwater which can be used as a platform for loading and unloading of cargo is called a mole
B. The brick masonry retaining wall which is used for loading and unloading of cargo is called guay wall
C. Three types of break waters are generally provided in harbours
D. All of the above.

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Question 8

According to the recommendations of International Navigational Congress in 1912, the ratio of length to width at the entrance for cargo vessels is

A. 5.5 and 6.0 to 1
B. 6.2 and 6.8 to 1
C. 7.4 and 7.8 to 1
D. 8.2 and 8.5 to 1

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Question 9

Surf zone is :

A. the fathom line of 10 m depth
B. the fathom line of 5 m depth
C. the swell of the sea breaking on the shore or reefs
D. the coast line attacked by the waves.

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Question 10

Pick up the correct statement from the following:

A. The artificial barrier constructed to enclose "n area for safe anchorage, is called break water
B. The smoothened surface at the top end of the vertical face of a guay wall, is called fending
C. The effective berthing lengths of inclined guays can be adjusted
D. All the above.

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Question 11

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.

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Question 12

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.

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Question 13

Pick up the correct statement from the following:

A. An artificial barrier which makes the enclosed area safe for anchorage of ships, is known as break water
B. The break water whose inside is used as a plateform for loading and unloading is called a mole
C. The length of the quay wall is governed by the length of the largest vessel likely to be berthed
D. All the above.

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Question 14

The low water datum for a lake is defined as the surface of the lake when it is at elevation

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.

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Question 15

The important component of a sea port is

A. terminal buildings
B. the docks
C. the harbour
D. all of these.

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Question 16

The fixed mooring does not require

A. mooring post
B. bollard
C. anchors
D. capstan.

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Question 17

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 the above.

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Question 18

Pick up the correct statement from the following:

A. The operation of removing material from the sea or river bed is known as
B. Dredging
C. Digging
D. None of these.

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Question 19

A roadstead :

A. is a protected area of water where boats can move safely
B. is the end of the road at the harbour
C. may be protected by break water walls
D. none of these.

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Question 20

Pick up the correct statement from the following:

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.

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Question 21

The heaviest line is used to democrate

A. the low water line
B. the high water line
C. the limit of swamps
D. the direction of current.

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Question 22

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).

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Question 23

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.

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Question 24

Pick up the correct statement from the following:

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.

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Question 25

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.

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Question 26

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.

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Question 27

The smoothened surface of the front face of the guay walls, is known as fending which is made of

A. granite stone
B. timber
C. steel
D. all the above.

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Question 28

Littoral drift

A. is the raised line of sand, parallel to the sea coast
B. is the slow movement of surface water at sea caused by the wind
C. is a current parallel to the shore, caused due to tangential component of the wind
D. is a current perpendicular to the shore line caused due to wind.

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Question 29

If h and h1 are the heights of a light house and the observer in a ship in metres above M S L then the horizontal distance from the ship to the light house in kilometres is

A. 3.86 (h + h1)
B. 3.86 (h - h1)
C. 3.86 (h x h1)
D. 3.86 π (h + h1)

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Question 30

The shape of docks and basins is generally kept

A. rectangular ways
B. diamond shape quays
C. inclined quays
D. all of these.

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Question 31

The dock wall is designed as a gravity retaining wall and is tested for

A. back fill pressure when the dock is empty
B. maximum water pressure from the dock without any back fill
C. the load charge transmitted to the dock by the movement of loaded vehicles or trains on the way
D. all of the above.

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Question 32

Cretans :

A. are the harbours established on the island south east of Greek mainland
B. are the natives of crete, an island south of Greek mainland
C. are the plants, grown in the neighbourhood of harbours
D. none of the above.

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Question 33

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.

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Question 34

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

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Question 35

A harbour is a place where

A. ships get shelter and protection against destructive forces due to sea waves
B. facilities are provided for receiving cargo and passengers
C. port buildings are constructed for commercial purposes
D. all the above.

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Question 36

According to the recommendations of International Navigational Congress in 1912, the ratio of length to width at the entrance for passenger vessels is :

A. 7.25 to 1
B. 7.80 to 1
C. 8.11 to 1
D. 8.44 to 1

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