Dock and Harbor Engineering Mcqs

This set of Civil Engineering Multiple Choice Questions & Answers (MCQs) focuses on “ Dock and Harbor Engineering ”. These Mcqs are chosen from a collection of most authoritative and best reference books on Civil Engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Dock and Harbor Engineering comprehensively.

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16.
A ship strikes the berth generally at an angle_________________?

90° with the face of the dock

45° with the face of the dock

30° with the face of the dock

10° with the face of the dock

17.
Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?

When the dock is empty

When the dock is empty with the ship of maximum tonnage

When the dock is full of water

When the dock is dry and is under construction

18.
Which of the following are repair docks ?

Marine railways, dry docks, floating docks, wet docks

Dry docks, wet docks, floating docks, lift docks

Wet docks, floating docks, lift docks, marine railways

Wet docks, lift docks, marine railways, dry docks

19.
Which of the following type of sea walls results in greatest protection of shore structures?

Vertical sea wall

Sea wall with batter

Stepped sea wall

Sea wall with concave face

20.
When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called_________________?

Surf

Clapotis

Fetch

Swell

21.
The significant wave height is defined is the average height of the_________________?

One – third highest waves

One – fourth highest waves

One – fifth highest waves

One – tenth highest waves

22.
By increasing the rise of lockgates_______________?

(i) the length of the lock gate will increase
(ii) transverse stress due to water pressure on the gate will increase
(iii) compressive force on the gate will increase
select the correct statements?

(i) and (ii) are correct

(i) and (iii) are correct

Only (ii) is correct

Only (iii) is correct

23.
If H is the height of the wave expected, then the height of the breakwater is generally taken as______________________?

1.2 H to 1.25 H above the datum

1.2 H to 1.25 H above the low water level

1.2 H to 1.25 H above the high water level

1.2 H to 1.25 H above the mean sea level

24.
The difference in height between highest high water and lowest low water is called_______________?

Mean range

Maximum range

Maximum rise

Mean rise

25.
Select the incorrect statement ?

The progress of work in low level method of mound construction is very slow.

Barge method of mound construction is economical.

In low level method of mound construction, the area of working is limited.

In staging method of mound cons-truction, the work is not interrupted even during stormy weather

26.
In a two lane channel, bottom width of channel is given by_______________?

Manoeuvring lane + 2 x Bank clearance lane

2 x Manoeuvring lane + 2 x Bank clearance lane

2 x Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane

Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane

27.
As per Berlin’s formula, the length of wave in metres is given by_______________?

1.3412

1.5612

1.7412

1.9412

28.
In basins subjected to strong winds and tide, the length of the berthing area should not be less than____________________?

The length of design vessel

The length of design vessel + 10% clearance between adjacent vessels

The length of design vessel + 20% clearance between adjacent vessels

Twice the length of design vessel

29.
Assertion A : Depth and width required at the entrance to a harbour are more than those required in the channel. Reason R : The entrance to a harbour is usually more exposed to waves as compared to the harbour itself__________________?

Select your answer based on the coding system given below.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

30.
The maximum harbour depth below lowest low water is generally equal to_________________?

(i) loaded draft + 1.2 m when bottom is rock
(ii) loaded draft + 1.8 m when bottom is soft
(iii) loaded draft + 1.2 m when bottom is soft
(iv) loaded draft + 1.8 m when bottom is rock

select the correct the correct statements.

A. (i) and (ii) are correct

(i) and (iii) are correct

(ii) and (iv) are correct

(iii) and (iv) are correct

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