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:

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

A is true but R is false.

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.

A is true but R is false.

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

A is false but R is true.

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

7 m

2.5 m

TRUE ANSWER : ?
YOUR ANSWER : ?

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

43959

43906

43967

43898

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

Only (ii) is correct

(i) and (ii) are correct

(i) and (iii) are correct

Only (iii) is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

As compared to wall type breakwater, mound type breakwater

Results in less damage due to gradual failure

Requires low maintenance cost

Requires skilled labor

Requires less material

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), (ii) and (iii) are correct

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

(i) and (ii) are correct

(ii) and (iii) are correct

(i) and (iii) are correct

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 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

1.2 H to 1.25 H above the low water level

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 (iii) is correct

(i) and (iii) are correct

(i) and (ii) are correct

Only (ii) is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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