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__________________?…
In basins subjected to strong winds and tide, the length of the berthing area should not be less than____________________?
A. the length of design vessel
B. the length of design vessel + 10% clearance between adjacent vesselsC. the…
As per Berlin’s formula, the length of wave in metres is given by_______________?
A. 1.3412B. 1.5612
where ‘t’ is the period in seconds for two successive waves to pass the same section…
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 laneC. 2 x Manoeuvring lane + 2 x Bank clearance lane + ship…
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…
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 levelC. 1.2 H to 1.25 H above the…
By increasing the rise of lockgates_______________?
(i) the length of the lock gate will increase
(ii) transverse stress due to water pressure on the gate will increase
(iii) compressive force on the gate will increase
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…
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_________________?