Fluid Dynamics智慧樹知到答案章節(jié)測(cè)試2023年山東科技大學(xué)

第一章測(cè)試Afluidcanresistanappliedshearstressbydeforming.（）

A:對(duì)

B:錯(cuò)

答案:BDifferencesbetweenasolidandafluidismadeonthebasisofthesubstance’sabilitytoresistandappliedshearstressthattendstochangeitsshape.（）

A:錯(cuò)

B:對(duì)

答案:BFluideventuallystopsdeformingatsomefixedstrainanglewhenaconstantshearforceisapplied.（）

A:對(duì)

B:錯(cuò)

答案:BThetangentialcomponentofaforceactingonthesurfaceperunitiscalledthenormalstress.（）

A:錯(cuò)

B:對(duì)

答案:AThehighlyorderedflowsmotionwithsmoothstreamlinesiscalledlaminar.（）

A:錯(cuò)

B:對(duì)

答案:B第二章測(cè)試Duetocapillarity,thecasesthatthelevelofthetubewillriseordepressiscalledcapillarityphenomena.（）

A:錯(cuò)

B:對(duì)

答案:BForcapillarityphenomena,whenadhesionisbiggerthancohesion,thetubelevelisdepressed.（）

A:對(duì)

B:錯(cuò)

答案:BTheviscosityofliquidsdecreaseswithtemperature,whereastheviscosityofgasesincreaseswithtemperature.（）

A:錯(cuò)

B:對(duì)

答案:BViscosityrepresentstheinternalresistanceofafluidtomotion,whichisexpressedbySirIsaacNewtonfirstin1687.（）

A:錯(cuò)

B:對(duì)

答案:BTheshearstressinfluidisnotproportionaltothemagnitudeofthefluiddeformation.（）

A:對(duì)

B:錯(cuò)

答案:B第三章測(cè)試Thepressureunitpascalistoosmallforpressuresencounteredonpractice.Therefore,it’smultiplieskilopascalarecommonlyused.So1Kpa=pa.（）

A:10

B:10000

C:100

D:1000

答案:DUsingahydrauliccarjackwithapistonareaof,forexample,apersoncanlifta1000-kgcarbyapplyingaforceofjustkgf.（）

A:100

B:1000

C:10

D:10000

答案:BAnopentankcontains5.0mofwatercoveredwith1mofoil().Findthegagepressureattheinterfacebetweentheliquids.（）

A:20kpa

B:16kpa

C:8kpa

D:10kpa

答案:BThebuoyantforceonanybodyisequaltotheweightoffluiddisplaced.（）

A:對(duì)

B:錯(cuò)

答案:AForabodyinaliquidwithafreesurface,ifitsweightislessthanthatofthesamevolumeofliquid,itwillriseandfloatonthesurface.（）

A:對(duì)

B:錯(cuò)

答案:A第四章測(cè)試Thetimemeansvalueoftheturbulentfluctuationoftheinstantaneousvelocityovertimeequalsto.（）

A:two

B:one

C:three

D:zero

答案:DThevelocityofaliquidina150-mmpipelinesis.Calculatetherateofflowin.（）

A:

B:

C:

D:

答案:AIntheEuleriandescription,wedon’treallycarewhathappenstoindividualfluidparticles;ratherweareconcernedwiththepressure,velocity,acceleration,etc.,ofwhateverfluidparticlehappenstobeattheinterestlocationandattheinteresttime.（）

A:對(duì)

B:錯(cuò)

答案:AInsteadyflow,streamlinesarecoincidentwithpathlinesandstreamlines.（）

A:對(duì)

B:錯(cuò)

答案:A答案:第五章測(cè)試Thepiezometricheadorthestatic(pressure)headcanbeexpressedas_______inBernoulliequation.（）

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:-1

B:0

C:1.5

D:1

答案:A第六章測(cè)試Inthemomentumequation,forsteadyflowthenetforceonthefluidmassisequaltothenetrateofoutflowofmomentumacrossthecontrolsurface.（）

A:對(duì)

B:錯(cuò)

答案:AThevectorialmomentumequationcanbealsoexpressedasscalarequationsintermsofforcesandvelocitiesinthedirections,respectively.（）

A:x

B:x,z

C:x,y,z

D:x,y

答案:CThemomentumcorrectionfactor(

A:4/5

B:3/4

C:4/5

D:4/3

答案:DThemomentumprincipledealsonlywithforcesthatactonthefluidmassinadesignatedcontrolvolume(

A:對(duì)

B:錯(cuò)

答案:AThemomentumprinciplestatesthatthesumoftheexternalforces

A:對(duì)

B:錯(cuò)

答案:A第七章測(cè)試InReynoldexperiment,thecriterionthatdeterminesthewhethertheflowislaminarorturbulentis.（）

A:Eulernumber

B:Froudnumber

C:Reynoldsnumber

D:Machnumber

答案:CThehydraulicradiusisdefinedastheexpressionaboutthecross-sectionalareaoftheflowingfluidA,andthewettedperimeter.so.（）

A:=A/P

B:=A2P

C:=AP2

D:

答案:AThehydraulicradiusisaconvenientmeansforexpressingtheshapeaswellasthesizeofaconduit,sotherelationshipbetweendiameterDandcanbeexpressesas.（）

A:

B:

C:

D:

答案:DInthestructureoftheturbulence,turbulentisinhibitedsothatalaminar-likesublayeroccursimmediatelynexttothewall.Thissublayeriscalled.（）

A:viscoussublayer

B:turbulentsublayer

C:laminarsublayer

D:inviscidsublayer

答案:AIfthesurfaceroughnessprojectionsarelargeenoughtoprotruderightthroughthetransitionlayer.Theresultingflowiscompletelyturbulent,knownasfullyrough(-pipe)flow（）

A:錯(cuò)

B:對(duì)

答案:B第八章測(cè)試Theratioofthelineardimensionsoftheprototypeto,ordividedby,thecorrespondingdimensionsinthemodel.Itfollowsthatareasvaryas.（）

A:

B:

C:

D:

答案:DFortheratiooftheinertiaforcestoviscousforce,theresultingparameteriscalledthe.（）

A:WeberNumber

B:Reynoldnumber

C:Froudenumber

D:MachNumber

答案:BAdimensionlessquantityrelatedtotheratiooftheinertiaforcestothepressureforcesisknownasthe.（）

A:EulerNumber

B:Reynoldnumber

C:WeberNumber

D:Froudenumber

答案:AInthemass-length-time(