19 FEBRUARY 2021 CURRENT AFFAIRS QUIZ

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

sea wall with concave face

vertical sea wall

stepped sea wall

sea wall with batter

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are repair docks ?

wet docks, floating docks, lift docks, marine railways

wet docks, lift docks, marine railways, dry docks

marine railways, dry docks, floating docks, wet docks

dry docks, wet docks, floating docks, lift docks

TRUE ANSWER : ?
YOUR ANSWER : ?

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 is true but R is false.

A is false but R is true.

Both A and R are true but R is not correct explanation of A.

Both A and R are true and R is the correct explanation of A.

TRUE ANSWER : ?
YOUR ANSWER : ?

In a two lane channel, bottom width of channel is given by

(2 × Manoeuvring lane) + (2 × Bank clearance lane + ship clearance lane)

(2 × Manoeuvring lane) + (2 × Bank clearance lane)

Manoeuvring lane + (2 × Bank clearance lane) + ship clearance lane

Manoeuvring lane + (2 × Bank clearance lane)

TRUE ANSWER : ?
YOUR ANSWER : ?

When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as

Beam

Depth

Draft

Free-board

TRUE ANSWER : ?
YOUR ANSWER : ?

For designing the dock, the proportion of ship load assumed to be borne by keel blocks is

43967

43959

43906

43898

TRUE ANSWER : ?
YOUR ANSWER : ?

At a given port, the fetch is 400 nautical miles, the maximum height of storm wave will be

8.169 m

9.144 m

2.073 m

6.8 m

TRUE ANSWER : ?
YOUR ANSWER : ?

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 is false but R is true.

A is true but R is false.

Both A and R are true but R is not the correct explanation of

Both A and R are true and R is the correct explanation of

TRUE ANSWER : ?
YOUR ANSWER : ?

The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be

4.0 L

2.0 L

1.5 L

1 L

TRUE ANSWER : ?
YOUR ANSWER : ?

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

4 m

7 m

5 m

2.5 m

TRUE ANSWER : ?
YOUR ANSWER : ?