Civil Engineering MCQs

Page No. 107

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


a mean range


bmaximum range


cmaximum rise


dmean rise


View Answer maximum range

If H is the height of the wave expected, then the height of the breakwater is generally taken as______________________?


a1.2 H to 1.25 H above the datum


b1.2 H to 1.25 H above the low water level


c1.2 H to 1.25 H above the high water level


d1.2 H to 1.25 H above the mean sea level



By increasing the rise of lockgates_______________?


athe length of the lock gate will increase


b transverse stress due to water pressure on the gate will increase


ccompressive force on the gate will increa


d (A) and (B) are correct



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


aone – third highest waves


b one – fourth highest waves


c one – fifth highest waves


done – 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_________________?


aSurf


bClapotis


cFetch


dSwell


View Answer Clapotis

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


avertical sea wall


b sea wall with batter


cstepped sea wall


dsea wall with concave face



Which of the following are repair docks ?


a marine railways, dry docks, floating docks, wet docks


bdry docks, wet docks, floating docks, lift docks


cwet docks, floating docks, lift docks, marine railways


dwet docks, lift docks, marine railways, dry docks



Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?


awhen the dock is empty


bwhen the dock is empty with the ship of maximum tonnage


c when the dock is full of water


dwhen the dock is dry and is under construction



A ship strikes the berth generally at an angle_________________?


a90° with the face of the dock


b45° with the face of the dock


c 30° with the face of the dock


d10° with the face of the dock



A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called_________________?


a Dry dock


bWet dock


c Floating dock


dRefuge dock


View Answer Floating dock

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