In basins subjected to strong winds and tide, the length of the berthing area should not be less than____________________?

Related Mcqs:

1. 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.

2. As per Berlin’s formula, the length of wave in metres is given by_______________?

   A. 1.3412
   B. 1.5612
   C. 1.7412
   D. 1.9412

   where ‘t’ is the period in seconds for two successive waves to pass the same section

3. When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as________________?

   A. beam
   B. depth
   C. freeboard
   D. draft

4. The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be___________________?

   A. L
   B. 1.5 L
   C. 2.0 L
   D. 4.0 L

   where L is the length of the largest ship to use the port

5. 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

6. For designing the dock, the proportion of ship load assumed to be borne by keel blocks is________________?

   A. 5/8
   B. 3/8
   C. 3/16
   D. 5/16

7. 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

8. 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

9. In a two lane channel, bottom width of channel is given by_______________?

   A. Manoeuvring lane + 2 x Bank clearance lane
   B. 2 x Manoeuvring lane + 2 x Bank clearance lane
   C. 2 x Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane
   D. Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane

10. If Hs is the significant wave height, then the average wave height and highest wave height respectively are given by_______________?

    A. 0.6 Hs and 1.67 Hs
    B. 0.6 Hs and 1.87 Hs
    C. 1.27 Hs and 1.87 Hs
    D. 1.27 Hs and 1.67 Hs