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.Management Sciences
Category: Dock and Harbor Engineering
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
Consider the following statements?
(i) Fender is the cushion provided on the face of the jetty for ships to come in contact,
(ii) Slip is the space of water area between two adjacent piers where ships are berthed,
(iii) Pier head is a structure constructed near the tip of a break water near the harbour entrance.
select the correct statements?
A. (i) and (ii) are correct
B. (ii) and (iii) are correct
C. (i) and (iii) are correct
D. (i), (ii) and (iii) are correct
Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?
A. when the dock is empty
B. when the dock is empty with the ship of maximum tonnage
C. when the dock is full of water
D. when the dock is dry and is under construction
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
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
At a given port, the fetch is 400 nautical miles, the maximum height of storm wave will be_______________?
A. 2.073 m
B. 8.169 m
C. 9.144 m
D. 6.8 m
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
select the correct statements?
A. (i) and (ii) are correct
B. (i) and (iii) are correct
C. Only (ii) is correct
D. Only (iii) is correct
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
Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area ?
A. sea walls, bulk heads and groynes
B. sea walls, bulk heads and revetments
C. sea walls, revetments and groynes
D. bulk heads, revetments and groynes
A ship strikes the berth generally at an angle_________________?
A. 90° with the face of the dock
B. 45° with the face of the dock
C. 30° with the face of the dock
D. 10° with the face of the dock
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