In small angle stability, when external forces exist, the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the ______.A.center of gravityB.center of flotationC.metacenterD.metacentric height
In small angle stability, when external forces exist, the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the ______.
A.center of gravity
B.center of flotation
C.metacenter
D.metacentric height
相关考题：
In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to ().A.heel until the angle of loll is reachedB.list until the center of buoyancy is aligned vertically with the center of gravityC.trim to the side opposite TCG until all moments are equalD.decrease draft at the center of flotation
A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is ______.A.positiveB.negativeC.zeroD.vertical
For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force ______.A.only when there is positive stabilityB.only when there is negative stabilityC.only when there is neutral stabilityD.at all times
For a vessel inclined by the wind, multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the ______.A.righting momentB.longitudinal momentC.transverse momentD.vertical moment
In small angle stability, the metacentric height ______.A.is found in the hydrostatic tables for a level vesselB.multiplied by the displacement yields the righting momentC.is always positiveD.is calculated by subtracting KG from KM
单选题The downflooding angle for a ship is the maximum angle at which（）.Astability is positiveBneutral equilibrium existsCthe load line is not submergedDintact stability curves are valid
单选题If the buoyant force on a ship’s hull is equal to the displacement tonnage，the ship will（）.Arequire ballastBbe down by the headCsinkDfloat
单选题For a vessel inclined by the wind，multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the（）.Arighting momentBvertical momentClongitudinal momentDtransverse moment
单选题The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.Aonly when there is positive stabilityBonly when there is negative stabilityConly when there is neutral stabilityDat all times
单选题What is the stability term for the distance from the center of gravity (G) to the Metacenter (M)，when small-angle stability applies? （）Ametacentric heightBmetacentric radiusCheight of the metacenterDrighting arm
单选题The angle of loll is a stability term which applies to a floating ship with（）.Aoff-center loadingBstiff characteristicsCexcessive pitch or rollDnegative initial stability
单选题For a given displacement，the righting arm has its maximum value when（）.AKG is minimumBangle of inclination is a maximumCsmall-angle stability appliesDKM is a minimum
单选题The internal force of a material, which tends to resist deformation when subjected to external forces, is known as （）.AstressBstrainCshear strengthDultimate tensile strength
单选题A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.ApositiveBnegativeCzeroDvertical
单选题In small-angle stability，when external forces exist，the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.Acenter of gravityBcenter of flotationCmetacenterDmetacentric height
单选题Stability is determined principally by the location of the point of application of two forces: the downward-acting gravity force and the（）.Aupward-acting weight forceBdownward-acting weight forceCupward-acting buoyant forceDenvironmental force
单选题In snall angle stability, when external forces exist , the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.Acenter of gravityBcenter of flotationCmetacenterDmetacentric height
单选题The maximum angle at which the intact stability curves are valid for ship’s is the angle for（）.Athe limit of positive stabilityBthe limit of small-angle stabilityCmaximum offsetDdownflooding
单选题In small angle stability，the metacentric height（）.Ais found in the hydrostatic tables for a level vesselBmultiplied by the displacement yields the righting momentCis always positiveDis calculated by subtracting KG from KM
单选题The tendency of a vessel to return to its original trim after being inclined by an external force is（）.AequilibriumBbuoyancyCtransverse stabilityDlongitudinal stability
单选题For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force（）.Aonly when there is positive stabilityBonly when there is negative stabilityConly when there is neutral stabilityDat all times
单选题In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to（）.Aheel until the angle of loll is reachedBlist until the center of buoyancy is aligned vertically with the center of gravityCtrim to the side opposite TCG until all moments are equalDdecrease draft at the center of flotation
单选题When a vessel is in any doubt as to whether such a situation exists she shall（）that it does exist and act accordingly.AconsumeBassumeCperfumeDresume
单选题The centre of lateral resistance is（）.Athe center of the hydrodynamic forces acting on the underwater hull to resist the effect of the windBthe point of influence of wind on the shipCthe pivot pointDthe point on the ship's above-water structure upon which the whole force of the wind can be considered an act
单选题When a vessel has positive stability，the distance between the line of force through B and the line of force through G is called the（）.Ametacentric heightBrighting armCrighting momentDmetacentric radius
单选题A vessel when joining or leaving from the side of a traffic separation scheme shall do so at as（）to the general direction of traffic flow as practicable.Asmall an angleBlarge an angleCeither small or large an angleDneither small nor large an angle
单选题Reserve buoyancy is the（）.Aunoccupied space below the waterlineBvolume of intact space above the waterlineCexcess of the buoyant force over the gravity forceDdifference in the buoyant force in salt and fresh waters