Too much air in the furnace of an oil-fired boiler would be indicated by _____.

Whichoftheconditionslistedwillcausearefrigerationcompressortorunconstantly withoutsimultaneouslydecreasingthetemperatureintherefrigeratedspace?

Intheoperationofaflashtypeevaporatorequippedwithairejectorstheairand non-condensablegasesareevacuateddirectlyfromthe_____.

Theclearancevolumeforasinglestagecompressorisdefinedasthespacecreated betweenthe_____.

Whichofthefollowingstatementsistrueconcerninganyevaporator?.

Thepercentageofimpuritiesinaspecificfueloilsampleisdeterminedby_____.

Anadvantageofahelicalgearpumpoverasimplegearpumpisthatthehelicalgear pumpiscapableof_____.

Whichofthefollowingstatementsiscorrectconcerningheattransfer?

Ifthereliefvalveonthedischargesideofahydraulicpumpliftsthecausecould be_____.

Theonlymeansofremovingthelatentheatofcondensationfromarefrigerantinthe normalrefrigerationcycleisby_____.

Condensatemustbedrainedfromtheintercoolerandafter-coolersofanaircompressor because_____.

Excessivelubeoilconsumptionbyareciprocatingaircompressorcanbecausedby_____.

Anexcessivechargeofrefrigerantinanair-cooledrefrigerationsystemcancause_____.

Anincreaseinrotorclearancesinarotarypumpwill_____.

Increasedinternalleakageinadditiontopoorhydraulicsystemresponseand inadequatelubricationistheresultof_____.

Theenergyassociatedwithmoleculesisknownas_____.

Whichofthelistedoperatingconditionswouldhavethegreatesteffectonthe volumetricefficiencyofanoperatingreciprocatingaircompressor?

Adistinguishingfeatureofaneducatorwhencomparedtootherpumpsisthe_____.

Pittinginthesuctionareasofacentrifugalpumpbronzeimpellerisusuallycaused by_____.

Whichofthefilter/strainerunitslistedpermitsyoutocleantheelementwhileleaving thesystemontheline?

Whichofthefollowingproblemscouldcauseairtoblowoutthroughtheinletairfilter ofarunningcompressor?.

Theoperationofparallelingtwoalternatorsrequiresthevoltagestobe_____andalso inphase.

Rotationofthesteeringwheelonthenavigationbridgeinitiatesoilpressurebeing appliedtothesteeringgearramsby_____.

WhichofthevalveslistedisNOTconsideredtobeahydraulicsystemdirectionalcontrol valve?

Dirtshouldnotbeallowedtocontaminateagreaselubricantbecausethe_____.

Thevacuummaintainedinthesaltwaterfeedheatershellofaflash-typeevaporator isgenerallyaccomplishedby_____.

Thefunctionofthehydraulictelemotortransmitterusedinanelectro-hydraulic steeringgearsystemisto_____.

Whichofthefollowingstatementsiscorrectconcerningtheviscosityoflubricating oil?

Thepurposeofthelowpressurecut-outswitchisto_____.

Whichofthefollowingstatementsiscorrectconcerningtheflashpointofaliquid?

Whenthedesiredrudderangleisattainedbyatypicaldoublemmelectro-hydraulic steeringgearthe_____.

WhichofthelistedpumpsisNOTapositivedisplacementpump?

Ifarefrigerationcompressorisshortcyclingonhighheadpressureyoushould_____.

Onedistinctadvantageofflashtypeevaporatorsascomparedtomostotherevaporators isthatinaflashevaporator_____.

Theviscosityofanoilisameasureofits_____.

Whichoftheconditionslistedrepresentsthegreatesteffectofexcessfrost accumulationontheevaporatorcoils?

Whileinspectingthesteeringsystematseayoushouldcheckfor_____.

Theairchargeleavinganintercoolerorafter-coolerofanaircompressorcanbe expectedtobe_____.

Moistureisremovedfromarefrigerationsystemby_____.

Inanelectro-hydraulicsteeringgearsystemwhenwillthevariabledisplacementpump beplacedonstroke?

Whichofthefollowingstatementsistrueconcerningtheoverallefficiencyofair compressors?

Whichofthelistedstatementsiscorrectconcerningrefrigerationsystems?

Thetemperaturedifferentialoccurringbetweentheinlettemperatureofthefluidto becooledandtheoutlettemperatureofthecoolingmediuminashell-and-tubeheat exchangerisgreatestinwhichoftheflowdesignslisted?

Ifthesuctionpressureattherefrigerationcompressorisbelownormalthecausecan be_____.

Whichofthelistedstatementsiscorrectconcerningthestartingofcentrifugalpumps?.

Sacrificialzincanodesareusedonthesaltwatersideofdieselengineheatexchangers to_____.

Theoilinacargowinchgearboxshouldbesampledperiodicallyto_____.

Scaleaccumulationonevaporatorheatexchangesurfaces_____.

Thevalvebestsuitedforthrottlinggasorliquidflowinapipelineisthe

Whichofthelistedproblemscouldproduceahighabsolutepressurewithinaflashtype evaporator?

Undernormalconditionstherefrigerantentersthecompressorinanoperating refrigerationsystemasa_____.

Onallvesselsequippedwithrefrigerationunitsofover20cubicfootcapacity_____.

Anun-loaderisinstalledonanaircompressorto_____.

Whatisafunctionofthewearingringsusedinmostcentrifugalpumps?

Theaccumulationofairandothernon-condensablegasesinarefrigerationsystemwill _____.

Whichofthefollowingconditionsmustexistforheattoflowfromoneobjecttoanother?

WhichofthefollowingstatementsaboutpumpoperationsisNOTacorrectstatement?

Acentrifugalbilgepumprequirespriming_____.

Whichofthefollowingproblemswouldbetheprobablecauseforthefaultyoperation ofareciprocatingaircompressorsuctionvalve?

Excessiveoilfoaminginthecrankcaseofarefrigerationcompressorismostlikely tooccurwhenthecompressor

Acrackeddiaphragminathermostaticexpansionvalvewillcausethevalveto_____.

Sub-coolingisamethodofreducingthetemperatureoftheliquidrefrigerantbelow its_____.

Whenairbecomestrappedinthehydraulicfluidofasteeringsystemthe_____.

AnACsynchronoustransmissiontyperemotesteeringcontrolsystemconsistsofa_____.

Differentialpressurescanbemeasuredwiththeuseofa_____.

Ifyouchangefromalowpourpointlubricanttoahighpourpointlubricantina refrigerationsystem_____.

Distilledwaterfromanevaporatormaybedischargedintoapotablewatertank_____.

Whenthereisnomovementoftheramsonanelectro-hydraulicsteeringgearthetilting boxoftherunningpumpis_____.

Theusualnumberofsingle-actingpistonsusedinavariablestrokeaxial-pistonpump is_____.

Theratiooftheweightofmoisturecontainedinagivenvolumeofairtotheweight ofmoisturethatthesamesamplewouldholdifsaturatediscalledthe.

AlubeoilfiltercanbeusedtoremovemostcontaminantsfromlubeoilAcontaminant whichwillremaininthelubeoilafterfilteringis_____.

Forsafestoragethemaximumallowabletemperaturetowhichrefrigerantbottlesshould beexposedis_____.

Anincreaseintheheatloadtoarefrigerationsystemwillcause_____.

Whichoftheproblemslistedcouldbeindicatedifasightglassintherefrigerant liquidlineisfullofbubbles?.

WhichofthefollowingmodesofheattransferdoesNOTrequireanyphysicalcontact betweenawarmerandacoolersubstance?

Badlyleakingrefrigerationcompressordischargevalveswillcause

Ifanelectricmotordrivenaircompressorfailstostartitmaybeduetoa_____.

Tothoroughlypumpoutthebilgesusingahorizontallymountedcentrifugalpumpthe _____.

Inamodernthree-phaseA.Csynchronousbrushlessgeneratortheexcitationwindingis ontherotorThatmeans_____.

Thecapacityofacentrifugalpumpcanbeincreasedbytheinstallationofalarger diameterimpellerAnothermeansofincreasingthepumpcapacityisto_____.

Whichofthelistedconditionswillcausethefeedwaterthathasnotflashedtovapor inthefirst-stageofaflashevaporatortoflowintothesecond-stage?

Operatingarotarypumpatspeedsinexcessofdesignrequirementscouldcause_____.

Reducedcapacityaccompaniedbyvibrationandnoiseatthesuctionofacentrifugal pumpisaresultof_____.

WhenarefrigerationcompressormotorfailstostarttheFIRSTthingthatshouldbe checkedforisa_____.

Whenitisnecessarytoopenarefrigerationsystemforrepairsandthesystemwill beopenformorethanafewminutestheopenendsofthesystemshouldbe_____.

Ifarefrigerationcompressorisrunningcontinuouslywithoutloweringthetemperature intherefrigeratedspacethetroublemaybe_____.

Ifonehydraulicpumpofanelectro-hydraulicsteeringunitfallsthevesselssteering canbeinitiallyandbestmaintainedbyusingthe_____.

Apressuredropthroughtherefrigerantliquidlinemaycause_____.

Asalinityindicatorisusedtodeterminethe_____.

Whichofthefollowingstatementsdescribesthefunctionsofareservoirusedina hydraulicsystem?

Whichofthefollowingfactorswillhavethegreatesteffectontheheatingloadwithin aconditionedspace?

Saltwateristypicallyprovidedtoarefrigerationsystemto_____.

Whichfeaturesofacentrifugalpumpreducetheneedforrenewingwornimpellersand pumpcasings?

Airblowingfromtheintakeairfilterofanoperatingaircompressorindicates______.

Intheproductionoffreshwaterfromseawaterthroughaprocessofheatingandcooling thecoolingphaseofproductionisusuallycalled_____.

Inarefrigerationsystemfoamingofthecrankcaseoilmaycausethe_____.

Anaircompressorcanbeunloadedatstart-upby_____.

Thecomponentofarefrigeratingsysteminwhichtherefrigerantvaporizesandabsorbs heatisknownasthe_____.

Adoublesuctioncentrifugalpumpimpellerhasbeeninstalledinthereversedirection andwill_____.

Adirtyintercooleronanaircompressorwillcause_____.

Whichoftheproblemslistedrepresentsthemajordifficultyencounteredwiththermal expansionvalveoperation?