FluidDynamics智慧樹知到答案章節(jié)測試2023年山東科技大學(xué)

第一章測試Afluidcanresistanappliedshearstressb（y）deforming.A:對B:錯答案:BDifferences betweenasolid and afluidismadeonthebasis of thesubstance’s abilityto resist and appliedshearstressthattends to change ishape.（）A:錯B:對答案:BFluideventuallystopsdeformingatsomefixedstrainanglewhenaconstanshearforceisapp（lie）d.A:對B:錯答案:BThetangentialcomponentofaforceactingonthesurfaceperunitiscallthenormalstre（ss.）A:錯B:對答案:AThehighlyorderedflowsmotionwithsmoothstreamlinesiscalledlaminar.（）A:錯B:對答案:B第二章測試Duetocapillarity,thecasesthatthelevelofthetubewillriseordeprecalledcapillarityphenomen（a.）A:錯B:對答案:BForcapillarityphenomena,whenadhesionisbiggerthancohesion,thetubelevelisdepress（ed.）A:對B:錯答案:BTheviscosityofliquidsdecreaseswithtemperature,whereastheviscosityofgasesincreaseswithtemperat（ur）e.A:錯B:對答案:BViscosityrepresentstheinternalresistanceofafluidtomotion,whichisexpressedbySirIsaacNewtonfirst（in）1687.A:錯B:對答案:BTheshearstressinfluidisnotproportionaltothemagnitudeofthefluiddeformation.（）A:對B:錯答案:B第三章測試Thepressureunitpascalistoosmallforpressuresencounteredonpractice.Therefore,it’smultiplieskilopascalarecommonlyused.So（）1Kpa=pa.A:10B:10000C:100D:1000答案:DUsingahydrauliccarjackwithapistonareaof,forexample,apersona1000-kgcarbyapplyingaforce（o）fjustkgf.A:100B:1000C:10D:10000答案:BAnopentankcontains5.0mofwatercoveredwith1mofoil（）.Findpressureattheinterfacebetweenthe（）liquids.A:20kpaB:16kpaC:8kpaD:10kpa答案:BThebuoyantforceonanybodyisequaltotheweight（of）fluiddisplaced.A:對B:錯答案:AForabodyinaliquidwithafreesurface,ifitsweightislessthanthsamevolumeofliquid,itwillriseandfloat（on）thesurface.A:對B:錯答案:A第四章測試Thetimemeansvalueoftheturbulentfluctuationoftheinstantaneousvelocityovertimeequal（s）to.A:twoB:oneC:threeD:zero答案:DThevelocityofaliquidina150-mmpipelinesis.Calculatetherateof（）A:B:C:D:答案:AIntheEuleriandescription,wedon’treallycarewhathappenstoindividualfluidparticles;ratherweareconcernedwiththepressure,velocity,acceleration,etc.,ofwhateverfluidparticlehappenstobeattheinterestlocationandattheinteres（t）time.A:對B:錯答案:AInsteadyflow,streamlinesarecoincidentwithpathlinesandstreamlines.（）A:對B:錯答案:A答案:第五章測試Thepiezometricheadorthestatic（pressure）headcanbeexpressedas inBernoulliequatio（n.）A:B:C:D:答案:BThetotalheadinBernoulliequationcanbeexpressedas inBernoulliequation.（）A:B:C:D:答案:BTheelevationheadinBernoulliequationcanbeexpressedas inBernoulliequation（.）A:B:C:D:答案:CThevelocityheadinBernoulliequationcanbeexpressedas inBernoulliequation（.）A:B:C:D:答案:ATheheadlossinanideal（frictionless）incompressiblefluidisassumedas（）A:-1B:0C:1.5D:1答案:A第六章測試Inthemomentumequation,forsteadyflowthenetforceonthefluidmaequaltothenetrateofoutflowofmomentumacrossthe（）controlsurfaceA:對B:錯答案:AThevectorialmomentumequationcanbealsoexpressedasscalarequationsintermsofforcesandvelocitiesinthedirections,（r）espectively.A:xB:x,zC:x,y,zD:x,y答案:CThemomentumcorrectionfactor（A:4/5B:3/4C:4/5D:4/3答案:DThemomentumprincipledealsonlywithforcesthatactonthefluidmassadesignatedcontrolvolume（A:對B:錯答案:AThemomentumprinciplestatesthatthesumoftheexternalforcesA:對B:錯答案:A第七章測試InReynoldexperiment,thecriterionthatdeterminesthewhethertheflowilaminarorturbulent（is）.A:EulernumberB:FroudnumberC:ReynoldsnumberD:Machnumber答案:CThehydraulicradiusisdefinedastheexpressionaboutthecross-sectionalareaoftheflowingfluidA,andthewetted（pe）rimeter.so.A:=A/PB:=A2PC:=AP2D:答案:AThehydraulicradiusisaconvenientmeansforexpressingtheshapeaswasthesizeofaconduit,sotherelationshipbetweendiameterDandcanexpressesas（.）A:B:C:D:答案:DInthestructureoftheturbulence,turbulentisinhibitedsothatalaminar-sublayeroccursimmediatelynexttothewall.Thissubla（ye）riscalled.A:viscoussublayerB:turbulentsublayerC:laminarsublayerD:inviscidsublayer答案:AIfthesurfaceroughnessprojectionsarelargeenoughtoprotruderightthroughthetransitionlayer.Theresultingflowiscompletelyturbulent,knownasfullyrough（-pipe）（fl）owA:錯B:對答案:B第八章測試Theratioofthelineardimensionsoftheprototypeto,ordividedby,thecorrespondingdimensionsinthemodel.Itfollowsthata（rea）svaryas.A:B:C:D:答案:DFortheratiooftheinertiaforcestoviscousforce,theresultingparametercalledthe（.）A:WeberNumberB:ReynoldnumberC:FroudenumberD:MachNumber答案:BAdimensionlessquantityrelatedtotheratiooftheinertiaforcestothepressureforcesisknowna（s）the.A:EulerNumberB:ReynoldnumberC:WeberNumberD:Froudenumber答案:AInthemass-length-time（ML