Which of the following type of sea walls results in greatest protection of shore structures?

Related Mcqs:

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

   A. sea walls, bulk heads and groynes
   B. sea walls, bulk heads and revetments
   C. sea walls, revetments and groynes
   D. bulk heads, revetments and groynes

2. Which of the following structures protects the shore by trapping of littoral drift?

   A. groynes
   B. sea walls
   C. revetments
   D. moles

3. 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

   A. Both A and R are true and R is the correct explanation of A
   B. Both A and R are true but R is not a correct explanation of A
   C. A is true but R is false
   D. A is false but R is true

4. 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. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true but R is not correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true.

5. Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?

   A. when the dock is empty
   B. when the dock is empty with the ship of maximum tonnage
   C. when the dock is full of water
   D. when the dock is dry and is under construction

6. As compared to wall type breakwater, mound type breakwater_________________?

   A. requires skilled labour
   B. requires low maintenance cost
   C. requires less material
   D. results in less damage due to gradual failure

7. Assertion A : Intervention of undulations in the sea bed reduces the depth of wave at the section. Reason R : No wave can have a height greater than the depth of water through which it passes?

   Select your answer based on the coding system given below?

   A. Both A and R are true and R is correct explanation of A.
   B. Both A and R are true but R is not the correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true

8. Which of the following is a fixed type mooring accessory ?

   A. bollard
   B. buoys
   C. cables
   D. anchors

9. 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.
   select the correct statements?

   A. (i) and (ii) are correct
   B. (ii) and (iii) are correct
   C. (i) and (iii) are correct
   D. (i), (ii) and (iii) are correct

10. 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
    select the correct statments.

    A. (i) and (ii) are correct
    B. (ii) and (iii) are correct
    C. (i) and (iii) are correct
    D. (i), (ii) and (iii) are correct