DOCKS AND HARBOR ENGINEERING QUIZ

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 true but R is false.

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 false but R is true.

TRUE ANSWER : ?
YOUR ANSWER : ?

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

(ii) and (iii) are correct

(i) and (ii) are correct

(i) and (iii) are correct

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a fixed type mooring accessory ?

bollard

anchors

cables

buoys

TRUE ANSWER : ?
YOUR ANSWER : ?

As per Stevenson’s empirical formula, the approximate value of the height of the wave in metres is given by (where F is the fetch in km.)

0.5 VF

1.5 VF

0.34 VF

3.4 VF

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:

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

A is false but R is true.

A is true but R is false.

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

TRUE ANSWER : ?
YOUR ANSWER : ?

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 : ?

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.)

1.9412

1.3412

1.5612

1.7412

TRUE ANSWER : ?
YOUR ANSWER : ?

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

0.6 Hs and 1.87 Hs

1.27 Hs and 1.67 Hs

0.6 Hs and 1.67 Hs

1.27 Hs and 1.87 Hs

TRUE ANSWER : ?
YOUR ANSWER : ?

The most popular method of construction of wall breakwaters is

Low level method

None of these

Barge method

Staging method

TRUE ANSWER : ?
YOUR ANSWER : ?

The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be

1 L

4.0 L

1.5 L

2.0 L

TRUE ANSWER : ?
YOUR ANSWER : ?

↑