辅机（Auxiliary machine ）

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1、辅机3（Auxiliarymachine3）Thefirstproblem:thegearpumpisnotsuitableforwaterismainlybecauseof________.A.leakageisseriousB.efficiencyistoolowC.wearbadlyD.corrosionisseriousAnswer:CSecondquestions:thefollowingstatementsabout:1.Thesteeringgearpump,IIsuctiondependsonthedirectionofthegearmeshingge

2、ar.Onesideexitanddischargepipe,which________.A.I'srightB.IIiscorrectC.,IandIIarecorrectD.,IandIIareincorrectAnswer:AThethirdproblem:themaininternalgearpumpleakageoccurredin________.A.gearclearanceB.addendumclearanceBetweenthemeshingteethofC.D.shaftsealAnswer:BThefourthproblem:thegeneral

3、externalgearpumphas________.A.2onlyrollingbearingsB.4onlyrollingbearingsC.2onlyplainbearingsD.4onlyplainbearingsAnswer:BThefifthproblem:gearpumpbearinglubricationusuallyrelyon________.A.quoteoilfromthedischargeendB.oilleakageintheendclearanceC.withgreaseD.uselubricationfreebearingsAnswe

4、r:BThesixthproblem:oil________lubricationgearpumpbearing.A.comesfromtheoilleakinthetopclearanceoftheteeththroughthesuctionportB.comesfromtheoilleakageinthegearendclearance,throughthesuctionportC.comesfromtheoilleakinthetopclearanceoftheteeththroughthedischargeportD.comesfromtheoilleakag

5、eattheendclearanceofthegearandpassestotheventAnswer:BThefollowingseventhquestions:onthegearpumpbearingstatementisnottrue________.A.oillubricationbyendclearanceB.usesthrustbearingstobearradialandaxialforcesC.greasecanbetakenbacktothesuctionendD.isnotallowedtouseplainbearingsAnswer:BEight

6、htitle:sealthecommongearpumpisthemostcommonlyused________.A.softpackingsealB.mechanicalsealC.lipsealD.OshapesealingringAnswer:CNinthquestions:(seallipseal)andtheinnerdiameteroftheshaftdiametershouldbecomparedto________.A.isslightlyolderB..C.equalityD.isOKAnswer:BTenthquestions:(ontheoil

7、seallipseal)isnotthecorrecttermis________.TheinnersideoftheA.canbefittedwithspringtocompensateforlipwearB.sealthelipsbyhydraulicpressureC.doesnotallowtheinsideoilpressuretobetoohighWheninstallingtheD.,contacttheshaftwithgreaseorgreaseAnswer:BTheeleventhproblem:internalgearpumpg