The free surface effects of a partially full liquid tank decrease with increased ______．A.Density of the liquidB.Placement of the tank above the keelC.Displacement volume of the shipD.Size of the surface area in the tank
The free surface effects of a partially full liquid tank decrease with increased ______．
A.Density of the liquid
B.Placement of the tank above the keel
C.Displacement volume of the ship
D.Size of the surface area in the tank
相关考题：
Serious loss of reserve buoyancy resulting from flooding any compartment of a ship will always ______.A.increase the trimB.change the free surface effectC.cause a serious listD.decrease ship stability
Coalescence(聚合) is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ______in size.A.expandB.extractC.increaseD.decrease
An upright vessel has negative GM．GM becomes positive at the angle of loll because the ______．A.Free surface effects are reduced due to pocketingB.KG is reduced as the vessel seeks the angle of lollC.Effective beam is increased causing BM to increaseD.Underwater volume of the hull is increased
A tank containers should not generally be more than 95% full，______．A.to allow for possible thermal expansion of the contentsB.to prevent dangerous surging movements in transitC.to increase its weightD.to change the free surface in it
The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel's displacement into the ______．A.Transverse free surface correction for the vesselB.Sum of the vertical moments of the vesselC.Sum of the longitudinal free surface moments of the vesselD.Longitudinal centerline of the vessel
Which statement about the free surface effect is TRUE ________．A.It increases in direct proportion to the length of the tank times the breadth squaredB.It decreases at increased angles of heel due to pocketing when a tank is 90% fullC.It decreases in direct proportion to increasing specific gravity of the liquid in the tankD.In practice，the correction is considered to be a virtual reduction of KG
The free surface corrections depend upon the dimensions of the surface of the free liquids and the ______．A.volume of liquid in the tankB.displacement of the vesselC.location of the tank in the vesselD.height of the center of gravity of the vessel
As the displacement of a vessel increases,. the detrimental effect of free surface ______.A.increasesB.decreasesC.remains the sameD.may increase or decrease depending on the fineness of the vessel’s form
单选题Which of the following is more important in determining the amount of free surface that will be produced?（）.AThe breath of the tankBThe length of the tankCThe amount of liquid in the tankDThe position of the tank in relation to the center line of the vessel
单选题During a stability test on a small passenger vessel（）.Athe vessel must be moored snuglyBeach tank must be partially full to show it does not leakCall dunnage，tools，and extraneous items are securedDwater under vessel must be deep enough to prevent grounding
单选题To calculate the free surface correction，it is necessary to divide the free-surface moments by the（）.Atotal weight of liquid loadsBtotal displacementClightweightDdeadweight
单选题The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel’s displacement into the（）.Atransverse free surface correction for the vesselBsum of the vertical moments of the vesselCsum of the longitudinal free surface moments of the vesselDlongitudinal centerline of the vessel
单选题The effects of free surface on a vessel’s initial stability do NOT depend upon the（）.Avolume of displacement of the vesselBdimensions of the surface of the liquidCamount of liquid in slack tanksDspecific gravity of the liquid in the tank
单选题A partially full tank causes a virtual rise in the height of the（）.AmetacenterBcenter of buoyancyCcenter of flotationDcenter of gravity
单选题As the displacement of a vessel increases, the detrimental effect of free surface（）.AincreasesBdecreasesCremains the sameDmay increase or decrease depending on the fineness of the vessel's form
问答题The difference between a liquid and a gas is obvious (1)____ the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and fills it to the level of a free surface. A gas forms no free surface but tends to diffuse throughout the space available; it must (2)____ be kept in a closed container, as in the (3)____ of a planet’s atmosphere. The distinction was a prominent feature of early theories (4)____(describe) the phases of matter. In the nineteenth century, for example, one theory maintained that a liquid could be “dissolved” in a vapor without losing its identity, and another theory held that the two phases are made up of different kinds of molecules (分子). The theories now prevailing (5) t____ a quite different approach by emphasizing what liquids and gases have in common. They are both forms of matter (6)____ have no permanent structure, and they both flow easily. They are fluids.The (7)____(fundament) similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat. Suppose a closed container partially filled with a liquid is heated. The liquid expands, or in other (8)____, becomes less dense; some of it evaporates. In contrast, the vapor above the liquid surface becomes dense as the evaporated molecules are added to it. The combination of temperature and pressure (9)____ which the densities become equal is called the critical point. Above the critical point the liquid and the gas can no longer be (10)____(distinguish); there is a single, undifferentiated fluid phase of uniform density.
单选题As engine RPM is increased from idle speed to full load speed, which of the conditions listed will decrease?（）ACompression ratioBFuel/Air ratioCCompression pressureDLube oil pressure
单选题You may improve a vessels stability by （）.Akeeping the fuel tanks topped offBincreasing the free surface effectCkeeping the fuel tanks at least half MIDkeeping at least one fuel tank empty for slops
单选题When liquid is free to move transversely in a tank, the effect is called（）.AFree communicationBFree fensityCFree surfaceDNegative GM
单选题An upright vessel has negative GM. GM becomes positive at the angle of loll because the（）.Afree surface effects are reduced due to pocketingBKG is reduced as the vessel seeks the angle of lollCeffective beam is increased causing BM to increaseDunderwater volume of the hull is increased
单选题The center of the underwater volume of a floating vessel is the（）.Acenter of buoyancyBcenter of flotationCuncorrected height of the center of gravity of the vesselDcenter of gravity of the vessel corrected for free surface effects
单选题Many vessels are provided with flume tanks，which also have a dump tank located under the flume tanks. In the event the ship is damaged，you could dump the flume tanks into the dump tank which would（）.Areduce the free surface effect and raise the KGBnot have any effect on free surface and raise the KGCreduce the free surface effect and lower the KGDnot have any effect on free surface and lower the KG
单选题A wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from（）.Afilling completelyBdeveloping free surfaceCdeveloping free surface momentDcollapsing
单选题What is the principal danger from the liquid in a half full tank onboard a vessel?（）ACorrosion from the shifting liquidBRupturing of bulkheads from the shifting liquidCLoss of stability from free surface effectDHoling of the tank bottom from the weight of the shifting liquid
单选题The effect of free surface on initial stability depends upon（）.Athe amount of liquid in the compartmentBthe dimensions of the liquid surface and the vessel's displacementConly the length of the compartmentDthe vertical position of the liquid in the vessel
单选题The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the（）.Avolume of liquid in the tankBvolume of displacement of the vesselClocation of the tank in the vesselDheight of the center of gravity of the vessel
单选题A vessel is equipped with cross-connected deep tanks.In which situation should the crossconnection valve be closed?（）.AThe tank lie above the waterline and are filledBThe tank are partically filled with dry cargoCThe tanks are partially filled with liquid cargoDThe tanks are filled and lie below the waterline