Docks and Harbor Engineering
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
Only (iii) is correct
(i) and (iii) are correct
(i) and (ii) are correct

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Docks and Harbor Engineering
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 false but R is true.
A is true but R is false.
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.

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Docks and Harbor Engineering
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:

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

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