DOCKS AND HARBOR ENGINEERING QUIZ

The most popular method of construction of wall breakwaters is

Staging method

Barge method

Low level method

None of these

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 and R is the correct explanation of A.

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.

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Large size stones are required in stone revetment in shore protection.Reason R : Resistance of stone to wave force is proportional to its volume and wave force is proportional to the exposed area of the stone.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 a correct explanation of A.

A is true but R is false.

A is false but R is true.

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

1.7412

1.5612

1.3412

TRUE ANSWER : ?
YOUR ANSWER : ?

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

(i) and (ii) are correct

(ii) and (iii) are correct

(i) and (iii) are correct

Only (iii) is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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 (ii) are correct

(ii) and (iii) are correct

(i) and (iii) are correct

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

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:

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

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

A is false but R is true.

A is true but R is false.

TRUE ANSWER : ?
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 (iii) are correct

Only (ii) is correct

Only (iii) is correct

(i) and (ii) are correct

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 : ?

If H is the height of the wave expected, then the height of the breakwater is generally taken as

1.2 H to 1.25 H above the low water level

1.2 H to 1.25 H above the high water level

1.2 H to 1.25 H above the datum

1.2 H to 1.25 H above the mean sea level

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YOUR ANSWER : ?