DOCKS AND HARBOR ENGINEERING QUIZ

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

stepped sea wall

sea wall with concave face

vertical sea wall

sea wall with batter

TRUE ANSWER : ?
YOUR ANSWER : ?

A ship strikes the berth generally at an angle

30° with the face of the dock

90° with the face of the dock

45° with the face of the dock

10° with the face of the dock

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YOUR ANSWER : ?

By increasing the rise of lock-gates, (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

(i) and (ii) are correct

Only (ii) is correct

Only (iii) is correct

(i) and (iii) are correct

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YOUR ANSWER : ?

A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.

Wet dock

Floating dock

Refuge dock

Dry dock

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a fixed type mooring accessory ?

buoys

cables

bollard

anchors

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Assertion A : Intervention of undulations in the sea bed reduces the depth of wave at the section.Reason R : No wave can have a height greater than the depth of water through which it passes.Select your answer based on the coding system given below:

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

A is false but R is true.

A is true but R is false.

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

TRUE ANSWER : ?
YOUR ANSWER : ?

When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as

Draft

Beam

Free-board

Depth

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The most popular method of construction of wall breakwaters is

Barge method

Low level method

None of these

Staging method

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Consider the following statements.(i) Fender is the cushion provided on the face of the jetty for ships to come in contact,(ii) Slip is the space of water area between two adjacent piers where ships are berthed,(iii) Pier head is a structure constructed near the tip of a break water near the harbour entrance. Of the statements

(i) and (iii) are correct

(ii) and (iii) are correct

(i), (ii) and (iii) are correct

(i) and (ii) are correct

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YOUR ANSWER : ?

If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by

1.27 Hs and 1.67 Hs

0.6 Hs and 1.67 Hs

1.27 Hs and 1.87 Hs

0.6 Hs and 1.87 Hs

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YOUR ANSWER : ?

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