The difference in height between highest high water and lowest low water is called_______________?

Related Mcqs:

1. 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

2. The maximum harbour depth below lowest low water is generally equal to_________________?

   (i) loaded draft + 1.2 m when bottom is rock
   (ii) loaded draft + 1.8 m when bottom is soft
   (iii) loaded draft + 1.2 m when bottom is soft
   (iv) loaded draft + 1.8 m when bottom is rock

   select the correct the correct statements.

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

3. 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

4. The significant wave height is defined is the average height of the_________________?

   A. one – third highest waves
   B. one – fourth highest waves
   C. one – fifth highest waves
   D. one – tenth highest waves

5. 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

6. 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

7. 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

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. As per Stevenson’s empirical formula, the approximate value of the height of the wave in metres is given by__________________?

   A. 0.34 VF
   B. 0.5 VF
   C. 1.5 VF
   D. 3.4 VF
   where F is the fetch in km

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.