DOCKS AND HARBOR ENGINEERING QUIZ

As compared to wall type breakwater, mound type breakwater

Results in less damage due to gradual failure

Requires skilled labor

Requires less material

Requires low maintenance cost

TRUE ANSWER : ?
YOUR ANSWER : ?

A ship strikes the berth generally at an angle

10° with the face of the dock

90° with the face of the dock

30° with the face of the dock

45° with the face of the dock

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

2.5 m

4 m

7 m

5 m

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.)

1.5 VF

3.4 VF

0.34 VF

0.5 VF

TRUE ANSWER : ?
YOUR ANSWER : ?

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 false but R is true.

A is true but R is false.

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 true but R is false.

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

A is false but R is true.

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

TRUE ANSWER : ?
YOUR ANSWER : ?

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

moles

revetments

sea walls

groynes

TRUE ANSWER : ?
YOUR ANSWER : ?

Dead weight tonnage of a ship<br/>(i) varies with latitude and season<br/>(ii) is more than displacement tonnage<br/>(iii) is the difference between displacement load and displacement light of these statements

(ii) and (iii) are correct

(i) and (ii) are correct

Only (iii) is correct

(i) and (iii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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

sea wall with batter

sea wall with concave face

vertical sea wall

stepped sea wall

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

8.169 m

6.8 m

2.073 m

TRUE ANSWER : ?
YOUR ANSWER : ?