Docks and Harbor Engineering
Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area?

Bulk heads, revetments and groynes
Sea walls, revetments and groynes
Sea walls, bulk heads and revetments
Sea walls, bulk heads and groynes

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Docks and Harbor Engineering
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 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.

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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

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

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