在线网课知道智慧《Fluid Dynamics（山东科技大学）》单元测试考核答案

第一章单元测试1【判断题】Afluidcanresistanappliedshearstressbydeforming.（）A.对B.错2【判断题】Differencesbetweenasolidandafluidismadeonthebasisofthesubstance’sabilitytoresistandappliedshearstressthattendstochangeitsshape.（）A.对B.错3【判断题】Fluideventuallystopsdeformingatsomefixedstrainanglewhenaconstantshearforceisapplied.（）A.对B.错4【判断题】Thetangentialcomponentofaforceactingonthesurfaceperunitiscalledthenormalstress.（）A.对B.错5【判断题】Thehighlyorderedflowsmotionwithsmoothstreamlinesiscalledlaminar.（）A.错B.对第二章单元测试1【判断题】Duetocapillarity,thecasesthatthelevelofthetubewillriseordepressiscalledcapillarityphenomena.（）A.错B.对2【判断题】Forcapillarityphenomena,whenadhesionisbiggerthancohesion,thetubelevelisdepressed.（）A.对B.错3【判断题】Theviscosityofliquidsdecreaseswithtemperature,whereastheviscosityofgasesincreaseswithtemperature.（）A.对B.错4【判断题】Viscosityrepresentstheinternalresistanceofafluidtomotion,whichisexpressedbySirIsaacNewtonfirstin1687.（）A.对B.错5【判断题】Theshearstressinfluidisnotproportionaltothemagnitudeofthefluiddeformation.（）A.错B.对第三章单元测试1【单选题】(2分)Thepressureunitpascalistoosmallforpressuresencounteredonpractice.Therefore,it’smultiplieskilopascalarecommonlyused.So1Kpa=pa.（）A.1000B.10C.100D.100002【单选题】(2分)Usingahydrauliccarjackwithapistonareaof,forexample,apersoncanlifta1000-kgcarbyapplyingaforceofjustkgf.（）A.100B.1000C.10D.100003【单选题】(2分)Anopentankcontains5.0mofwatercoveredwith1mofoil().Findthegagepressureattheinterfacebetweentheliquids.（）A.20kpaB.10kpaC.8kpaD.16kpa4【判断题】Thebuoyantforceonanybodyisequaltotheweightoffluiddisplaced.（）A.对B.错5【判断题】Forabodyinaliquidwithafreesurface,ifitsweightislessthanthatofthesamevolumeofliquid,itwillriseandfloatonthesurface.（）A.对B.错第四章单元测试1【单选题】(2分)ThetimemeansA.zeroB.threeC.twoD.one2【单选题】(2分)Thevelocityofaliquidina150-mmpipelinesis.Calculatetherateofflowin.（）A.B.C.D.3【判断题】IntheEuleriandescription,wedon’treallycarewhathappenstoindividualfluidparticles;ratherweareconcernedwiththepressure,velocity,acceleration,etc.,ofwhateverfluidparticlehappenstobeattheinterestlocationandattheinteresttime.（）A.错B.对4【判断题】Insteadyflow,streamlinesarecoincidentwithpathlinesandstreamlines.（）A.对B.错第五章单元测试1【单选题】(2分)Thepiezometricheadorthestatic(pressure)headcanbeexpressedas_______inBernoulliequation.（）A.B.C.D.2【单选题】(2分)ThetotalheadinBernoulliequationcanbeexpressedas_____inBernoulliequation.（）A.B.C.D.3【单选题】(2分)TheelevationheadinBernoulliequationcanbeexpressedas______inBernoulliequation.（）A.B.C.D.4【单选题】(2分)ThevelocityheadinBernoulliequationcanbeexpressedas_______inBernoulliequation.（）A.B.C.D.5【单选题】(2分)Theheadlossinanideal(frictionless)incompressiblefluidisassumedas.（）A.1.5B.0C.1D.-1第六章单元测试1【判断题】Inthemomentumequation,forsteadyflowthenetforceonthefluidmassisequaltothenetrateofoutflowofmomentumacrossthecontrolsurface.（）A.对B.错2【单选题】(2分)Thevectorialmomentumequationcanbealsoexpressedasscalarequationsintermsofforcesandvelocitiesinthedirections,respectively.（）A.x,yB.x,y,zC.x,zD.x3【单选题】(2分)Themomentumcorrectionfactor(A.3/4B.4/5C.4/5D.4/34【判断题】Themomentumprincipledealsonlywithforcesthatactonthefluidmassinadesignatedcontrolvolume(A.错B.对5【判断题】ThemomentumprinciplestatesthatthesumoftheexternalforcesA.对B.错第七章单元测试1【单选题】(2分)InReynoldexperiment,thecriterionthatdeterminesthewhethertheflowislaminarorturbulentis.（）A.FroudnumberB.ReynoldsnumberC.MachnumberD.Eulernumber2【单选题】(2分)Thehydraulicradiusisdefinedastheexpressionaboutthecross-sectionalareaoftheflowingfluidA,andthewettedperimeter.so.（）A.B.C.D.3【单选题】(2分)Thehydraulicradiusisaconvenientmeansforexpressingtheshapeaswellasthesizeofaconduit,sotherelationshipbetweendiameterDandcanbeexpressesas.（）A.B.C.D.4【单选题】(2分)Inthestructureoftheturbulence,turbulentisinhibitedsothatalaminar-likesublayeroccursimmediatelynexttothewall.Thissublayeriscalled.（）A.turbulentsublayerB.laminarsublayerC.inviscidsublayerD.viscoussublayer5【判断题】Ifthesurfaceroughnessprojectionsarelargeenoughtoprotruderightthroughthetransitionlayer.Theresultingflowiscompletelyturbulent,knownasfullyrough(-pipe)flow（）A.对B.错第八章单元测试1【单选题】(2分)Theratioofthelineardimensionsoftheprototypeto,ordividedby,thecorrespondingdimensionsinthemodel.Itfollowsthatareasvarya.（）A.B.C.D.2【单选题】(2分)Fortheratiooftheinertiaforcestoviscousforce,theresultingparameteriscalledthe.（）A.FroudenumberB.ReynoldnumberC.MachNumberD.WeberNumber3【单选题】(2分)Adimensionlessquantityrelatedtotheratiooftheinertiaforcestothepressureforcesisknownasthe.（）A.ReynoldnumberB.WeberNumberC.FroudenumberD.EulerNumber4【单选题】(2分)In