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

Only (iii) is correct

(i) and (ii) are correct

(i) and (iii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements in regard to Beaufort scale for wind speeds,(i) The Beaufort number ranges from 1 to 12.(ii) Higher Beaufort number indicates higher speed of wind,(iii) Beaufort number for calm is smallest and for hurricane is highest Of these statements

(i) and (iii) are correct

(ii) and (iii) are correct

(i) and (ii) are correct

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

TRUE ANSWER : ?
YOUR ANSWER : ?

If the maximum spring rise is 2 m and height of the waves expected is 4 m , then the breakwater height above the datum will be

5 m

4 m

2.5 m

7 m

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Basin walls have to be of much grater height than dock walls.Reason R : Tidal basins are subject to fluctuations of levels due to tidal variations.Select your answer based on the coding system given below:

A is true but R is false.

A is false but R is true.

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

The most popular method of construction of wall breakwaters is

Staging method

Low level method

Barge method

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Eight points

Six points

Two points

Four points

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

Depth

Draft

Beam

Free-board

TRUE ANSWER : ?
YOUR ANSWER : ?

As per Berlin's formula, the length of wave in meters is given by(Where ’t’ is the period in seconds for two successive waves to pass the same section.)

1.3412

1.5612

1.9412

1.7412

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

Surf

Clapotis

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Dry dock

Wet dock

Refuge dock

Floating dock

TRUE ANSWER : ?
YOUR ANSWER : ?

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