As per Stevenson’s empirical formula, the approximate value of the height of the wave in metres is given by (where F is the fetch in km.) 1.5 VF 3.4 VF 0.34 VF 0.5 VF TRUE ANSWER : ? YOUR ANSWER : ?
As compared to wall type breakwater, mound type breakwater Results in less damage due to gradual failure Requires low maintenance cost Requires less material Requires skilled labor TRUE ANSWER : ? YOUR ANSWER : ?
Assertion A : Large size stones are required in stone revetment in shore protection.Reason R : Resistance of stone to wave force is proportional to its volume and wave force is proportional to the exposed area of the stone.Select your answer based on the coding system given below. Both A and R are true and R is the correct explanation of A. A is false but R is true. Both A and R are true but R is not a correct explanation of A. A is true but R is false. TRUE ANSWER : ? YOUR ANSWER : ?
By increasing the rise of lock-gates, (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 Only (ii) is correct (i) and (iii) are correct Only (iii) is correct (i) and (ii) are correct TRUE ANSWER : ? YOUR ANSWER : ?
The difference in height between highest high water and lowest low water is called Mean range Maximum range Maximum rise Mean rise TRUE ANSWER : ? YOUR ANSWER : ?
Consider the following statements in regard to Beaufort scale for wind speeds,<br/>(i) The Beaufort number ranges from 1 to 12.<br/>(ii) Higher Beaufort number indicates higher speed of wind,<br/>(iii) Beaufort number for calm is smallest and for hurricane is highest of these statements (i) and (iii) are correct (ii) and (iii) are correct (i) and (ii) are correct (i), (ii) and (iii) are correct TRUE ANSWER : ? YOUR ANSWER : ?
If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by 0.6 Hs and 1.87 Hs 0.6 Hs and 1.67 Hs 1.27 Hs and 1.87 Hs 1.27 Hs and 1.67 Hs TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following are repair docks ? dry docks, wet docks, floating docks, lift docks marine railways, dry docks, floating docks, wet docks wet docks, floating docks, lift docks, marine railways wet docks, lift docks, marine railways, dry docks TRUE ANSWER : ? YOUR ANSWER : ?
As per Berlin's formula, the length of wave in meters is given by(Where ’t’ is the period in seconds for two successive waves to pass the same section.) 1.9412 1.7412 1.3412 1.5612 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) Manoeuvring lane + (2 × Bank clearance lane) Manoeuvring lane + (2 × Bank clearance lane) + ship clearance lane (2 × Manoeuvring lane) + (2 × Bank clearance lane) TRUE ANSWER : ? YOUR ANSWER : ?