Docks and Harbor Engineering
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 is true but R is false.
Both A and R are true but R is not a correct explanation of
A is false but R is true.

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Docks and Harbor Engineering
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

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

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Docks and Harbor Engineering
In basins subjected to strong winds and tide, the length of the berthing area should not be less than

The length of design vessel
The length of design vessel + 20% clearance between adjacent vessels
The length of design vessel + 10% clearance between adjacent vessels
Twice the length of design vessel

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