Dock and Harbor Engineering MCQs

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Correct options are highlighted when revealed.

1.Which of the following pairs of statements are accurate?

Statements (i) and (ii) are trueStatements (ii) and (iii) are trueStatements (i) and (iii) are trueAll statements (i), (ii), and (iii) are true

2.Given that Hs represents the significant wave height, what are the corresponding average wave height and the maximum wave height values?

0.6 times Hs and 1.67 times Hs0.6 times Hs and 1.87 times Hs1.27 times Hs and 1.87 times Hs1.27 times Hs and 1.67 times Hs

3.Assertion (A): The height of basin walls must be significantly greater than that of dock walls. Reason (R): Tidal basins experience water level changes due to tidal fluctuations. What is the correct relationship between A and R?

Both A and R are correct, and R properly explains A.Both A and R are true, but R does not explain A.A is correct, but R is incorrect.A is incorrect, but R is correct.None of the above.

4.Evaluate the following statements about the Beaufort scale for measuring wind speed:

Only statements (i) and (ii) are trueStatements (ii) and (iii) are accurateStatements (i) and (iii) are correctAll statements (i), (ii), and (iii) are trueNone of the above

5.Which of the following statements about deadweight tonnage of a ship are accurate?

6.Which pair of statements correctly represents the typical maximum harbor depth below the lowest low water level?

Statements (i) and (ii) are accurateStatements (i) and (iii) are accurateStatements (ii) and (iv) are accurateStatements (iii) and (iv) are accurate

7.Assertion (A): The depth and width needed at a harbour's entrance exceed those required within the channel. Reason (R): The harbour entrance is generally more vulnerable to wave action compared to the inner harbour. Which of the following is correct?

Both A and R are true, and R correctly explains A.Both A and R are true, but R does not explain A.A is true, but R is false.A is false, but R is true.None of the above.

8.For basins exposed to strong tidal currents and winds, what is the minimum required length of the berthing area?

Equal to the length of the design vesselLength of the design vessel plus 10% additional space between vesselsLength of the design vessel plus 20% additional space between vesselsDouble the length of the design vesselNot specified

9.According to Berlin's formula, what is the wavelength measured in meters?

1.34121.56121.74121.9412

10.What is the formula to determine the bottom width of a two-lane channel?

Manoeuvring lane width plus twice the bank clearance widthTwice the manoeuvring lane width plus twice the bank clearance widthTwice the manoeuvring lane width plus twice the bank clearance width plus the ship clearance widthManoeuvring lane width plus twice the bank clearance width plus the ship clearance width

11.Identify the statement that is false regarding mound construction methods.

The pace of work in the low-level mound construction technique is quite slow.The barge method for mound construction is cost-effective.The working area in the low-level mound construction approach is restricted.During stormy conditions, the staging method of mound construction allows uninterrupted work.

12.What term describes the vertical distance between the highest high tide and the lowest low tide?

average rangemaximum rangepeak riseaverage rise

13.Given that H represents the anticipated wave height, what is the typical height of a breakwater relative to?

1.2 H to 1.25 H measured from the reference datum1.2 H to 1.25 H above the lowest tide level1.2 H to 1.25 H higher than the highest tide level1.2 H to 1.25 H above the average sea level

14.What happens when the height of lock gates is increased? Choose the correct statements.

Statements (i) and (ii) are trueStatements (i) and (iii) are trueOnly statement (ii) is trueOnly statement (iii) is true

15.What does the significant wave height represent in terms of wave measurement?

The average height of the highest one-third of wavesThe average height of the highest one-fourth of wavesThe average height of the highest one-fifth of wavesThe average height of the highest one-tenth of waves

16.What is the term for the phenomenon where a wave hitting a vertical breakwater in deep water reflects back and combines with an incoming wave of equal size, creating a vertical wall of water?