As compared to wall type breakwater, mound type breakwater_________________?

Related Mcqs:

1. When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called_________________?

   A. Surf
   B. Clapotis
   C. Fetch
   D. Swell

2. If the maximum spring rise is 2 m and height of the waves expected is 4 m , then the breakwater height above the datum will be_________________?

   A. 2.5 m
   B. 4 m
   C. 5 m
   D. 7 m

3. If H is the height of the wave expected, then the height of the breakwater is generally taken as______________________?

   A. 1.2 H to 1.25 H above the datum
   B. 1.2 H to 1.25 H above the low water level
   C. 1.2 H to 1.25 H above the high water level
   D. 1.2 H to 1.25 H above the mean sea level

4. 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.

   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 the 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 is a fixed type mooring accessory ?

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

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

   A. vertical sea wall
   B. sea wall with batter
   C. stepped sea wall
   D. sea wall with concave face

7. Minimum width of ship clearance shall be__________________?

   A. B or 30 m
   B. 1.5 B or 50 m
   C. 1.5 B
   D. 50 m

   where “B” is beam of the design vessel

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

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

9. Select the incorrect statement ?

   A. The progress of work in low level method of mound construction is very slow.
   B. Barge method of mound construction is economical.
   C. In low level method of mound construction, the area of working is limited.
   D. In staging method of mound cons-truction, the work is not interrupted even during stormy weather

10. 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.