DOCKS AND HARBOR ENGINEERING QUIZ

By increasing the rise of lock-gates,<br/>(i) The length of the lock gate will increase<br/>(ii) Transverse stress due to water pressure on the gate will increase<br/>(iii) Compressive force on the gate will increase

Only (ii) is correct

(i) and (ii) are correct

(i) and (iii) are correct

Only (iii) is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Fetch

Swell

Clapotis

Surf

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following structures protects the shore by trapping of littoral drift?

sea walls

revetments

moles

groynes

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Marine structures are made specially bulky and strong.Reason R : Sea insects result in undermining of the hardest and the soundest building material.Select your answer based on the coding system given below:

A is false but R is true.

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

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

A is true but R is false.

TRUE ANSWER : ?
YOUR ANSWER : ?

The most popular method of construction of wall breakwaters is

Low level method

Staging method

Barge method

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

At a given port, the fetch is 400 nautical miles, the maximum height of storm wave will be

9.144 m

6.8 m

2.073 m

8.169 m

TRUE ANSWER : ?
YOUR ANSWER : ?

For designing the dock, the proportion of ship load assumed to be borne by keel blocks is

43906

43898

43967

43959

TRUE ANSWER : ?
YOUR ANSWER : ?

In multiple point mooring system, vessel is secured to minimum of

Eight points

Four points

Two points

Six points

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a fixed type mooring accessory ?

bollard

anchors

buoys

cables

TRUE ANSWER : ?
YOUR ANSWER : ?

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

When the dock is dry and is under construction

When the dock is empty with the ship of maximum tonnage

When the dock is empty

When the dock is full of water

TRUE ANSWER : ?
YOUR ANSWER : ?

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