To minimize corrosion, fuel oil strainer disks, spacers and scraper blades are made of _____.

Insufficientrefrigerantinarefrigerationplantmayresultin_____.

Whichofthefollowingbestdescribesoverchargeofrefrigerant?

Themaximumpressuredevelopedbyawasteheatboilerisdeterminedbythemainengine exhaust_____.

In_____pumpsacloseddischargevalvewillcauseburstingdischargepressure.

Whichofthefollowingdevicesiscommontobothmechanicalandhydraulicgovernors?

Whenthetemperatureoftherefrigerantflowingoutfromthecondenserisbelowthe condensingtemperatureitissaidtobe_____.

Inafour-stroke/cycledieselenginethecamshaftrotatesat_____.

Adonkeyboileris_____.

Successfulcombustioninsidethecylindersofadieselengineisdependentupon_____.

Gearpumpsareofpositivedisplacementtypepumpsbecausetheydischargeanearconstant amountofliquid_____pressure.

Fuelinjectionsystemsmeterfuelatomizefueland_____.

Indirectcoolingoffuelinjectornozzleholdersfordieselenginesisaccomplished primarilyby_____.

Temperaturecontrolvalvesinstalledinthejacketcoolingwatersystemofadieselengine modulatestherateofwaterflowthroughthe_____.

Foragivenfuelachangeinthecompressionratiowillaffecttheignitionlagbywhich ofthelistedmeans?

Thedeviceusedforlow-pressurecontrolandhigh-pressurecutoutonacompressoris called_____.

_____areusedforcargohandling.

The_____pumpdischargesanearlyconstantamountofliquidregardlessofpressure.

Electricallyoperatedsafetydevicesonauxiliarydieselenginesfunctiontostopthe engineby_____.

Impropercoolingofadieselenginecylinderlinerduetotheaccumulationofscale depositsmaycause_____.

Theboilerfeedwatercheckvalvesarelocatedonthe_____.

Iffuelinjectiontoafour-stroke/cycledieselenginebeginsearlierthandesigned ignitionmaybedelayedbecausethe_____.

Whichofthefollowingdevicesisacommonbasicelementwithnearlyallmechanical governors?

Whenstartedacompleteoilywaterseparatingunitisfirstfilled_____Theoilywater mixtureisthenpumpedthroughtheinletpipeintothecoarseseparatingcompartment.

Ifyoumustenteraroomorcompartmenttocombatthefirekeepanescapepath_____.

Inusingreductiongearstoobtainefficientpropellerspeeds_____.

Largetwo-stroke/cyclemainpropulsiondieselenginecylinderscanbesuccessfully pressurechargedduringnormaloperationbyusingthe_____.

Thecamshaftonafour-stroke/cycledieselengineprovidesameanstooperatethe_____.

Youshouldfrequentlycomparedrum-mountedandremote-readingwaterlevel indicators_____betweenthesehavecontributedtofailuresbecauseofoverheating throughshortageofwaterwhenaboilerwasbeingoil-fired.

Theamountoffluiddeliveredbyacentrifugalpumpcanberegulatedby_____.

Atwo-strokedieselengineexhausttemperaturewillbelowerthanafour-strokediesel engineofthesamedisplacementbecausethe_____1MEPislowerandthescavenging airiscoolingtheexhaustgases;2valveoverlapinafour-stroke.

WhichofthefollowingshouldberecordedinOilRecordBookPartImachineryspace operation?

Adieselengineisoperatingat1800RPManddrivingapropellerat600RPMWhatisthe speedreductionratio?

Ifabilgepumpfailedtobuildupdischargepressureyoushouldcheckfor_____.

Thefurnaceofanoilfiredboilershouldbe_____beforetheoperatingburnerislit.

Oneofthefunctionsofventilationisto_____thehumidityofspacescontainingsources ofmoistureorto_____thetemperatureofspacesnotmechanicallycooledsuchasthe engineroom.

Awasteheatboilerisinstalledonsomedieselpropelledvesselsto_____.

Arefrigerantboilsandvaporizesinthe_____inacompressionrefrigerationsystem.

Ifthechemicalanalysisofalubeoilsampletakenfromadieselengineindicatesan increasedneutralizationnumberthe_____.

Ina_____boilerthehotgasesfromthefurnacepassthroughthetubeswhilethewater isontheoutside.

Throttlinginthe_____lineofacentrifugalpumpinvolvestheriskofthepumpcavitation.

Theminimumspeedanenginemustattainbeforeignitioncanoccurdependsupon_____.

Formanyyearsmarinecentrifugesweredesignedfor_____operationthatisthemachines wererunforaperiodduringwhichsolidsaccumulatedinthebowlThemachinewasstopped whentheaccumulatedsolidsbegantoimpairitsperformance.

Inasimplemechanicalgovernorthe_____.

Whatisthefunctionofthethrustbearing?

Whencentrifugingheavyfueloilanimportantfactortoconsideristhe_____1flow rate;2viscosityofthefueloil.

Hotgasdefrostingusesthehotgasfrom_____todefrosttheevaporator.

Areciprocatingpumpbelongsto_____accordingtoitsworkingprinciple.

Ifadieselengineisdifficulttostartandoperateswiththeenginetemperatureslower thannormalyoushouldsuspectthatthe_____.

Theemergencybilgesuctionorbilgeinjectionvalveisusedtoprevent_____ofthe ship.

Thepurposeofthedeliverycheckvalveusedinadieselfuelinjectionjerkpumpis to_____.

Thedieselenginevalvesubjectedtomostsevereconditionsofserviceisthe_____.

Ifthejacketwatertemperatureofanoperatingdieselenginesuddenlyrisesabovenormal thecausecanbeattributedto_____.

Anadvantageofaluminumpistonswhencomparedtocastironpistonsis_____.

_____playaveryimportantpartinhydraulicsystemsbypreventinginteractionbetween differentpartsofthehydrauliccircuit.

Withregardstoadieselenginecrankcaseexplosionthemostviolentisthe1primary explosion;2secondaryexplosion.

Ifthefeedpumpforanauxiliaryboilerfailstodeliverthefeedwatertotheboiler thecausemaybe_____.

_____areusedtolimitthepressureinanyparticularportionandmainlycontrolthe pressureafterthevalve.

Whichofthefollowingconditionscouldcausethefeedpumpforanauxiliaryboilerto losesuction?

Theairsuppliedtoadieselengineiscompressedto_____1provideheatfortheignition ofthefuel;2decreaseinjectiondelay.

Anincreasedpressuredifferentialbetweentheinletandoutletofastrainerusually indicatesthestraineris_____.

Ifthemainengineofanunattendedengineroomshutsdownautomaticallyitwillbe indicatedbyanalarm_____.

Whichofthefollowingpumpsbelongstocentrifugalpump?

Thehighestpressureinadieselenginecylindernormallyoccurs_____.

Adieselenginecrankcaseventilationsystem_____.

Whattypeofvalveisusedtodirecttheflowofhydraulicfluid?

Latentheatchangesthe_____ofwater.

Adieselengineisoperatingwithexcessivelyhighexhausttemperaturesatall cylindersTocorrectthisconditionyoushouldFIRST_____.

_____isthecirculationandrefreshingoftheairinaspacewithoutnecessarilya changeoftemperature.

Whatisthefunctionofthermostaticexpansionvalveinacompressionrefrigeration system?

Ifthevalvetappetsinadieselenginearesetatgreaterclearancesthanthosespecified bytheenginemanufacturerthosevalveswill_____.

Todetermineifthelubeoilfilterelementsneedchanging_____.

Loadcontrolonadieselengineisaccomplishedby_____.

Oxygencorrosioninauxiliaryboilersispreventedbytreatingtheboilerfeedtankwith eithersodium_____.

Whendistillingseawaterthecoolingwaterdischargingfromthedistillerisfedback toevaporatorasfeedwater_____.

Whatfunctionisprovidedbythecrankcaseventilationsystemonsomedieselengines?

Themainsteeringgearmustbeabletosteertheshipatmaximumaheadservicespeed andbecapableatthisspeedandattheshipsdeepestservicedraughtofputtingthe rudderfrom35degreesononesideto30degreesontheothersidewithinno_____.

Thesmallendoftheconnectingrodisattachedtothepistonwitha_____.

Intheprocessof_____liquidchangesintogas.

Theheatusedtochangealiquidtoavaporiscalled_____.

Inacompressionrefrigerationplanttherefrigerantisunderlowpressureinthe_____ andunderhighpressureinthe_____.

Acentrifugearrangedtoseparateimpuritiesandsmallamountsofwaterfromoilisknown as_____.

Thefuelsupplysystemtoanautomaticauxiliaryboilerwillbeautomaticallyshutdown iftheboiler_____.

Inmotorship_____isoftenusedtorecoversomeoftheheatcarriedintheexhaust gasesfromthemainengine.

Coalescenceisthebreakdownofsurfacetensionbetweenoildropletsinanoil/water mixturewhichcausesthemtojoinand_____insize.

TheexpansionvalveonaFreonsystemcontrolsthe_____.

Afterpassingthroughtheexpansionvalvetherefrigerantshouldbeinthestateof _____.

Themainpurposeofthepistonoilscraperringsisto_____.

Asforahydraulicvanepumpwhichofthefollowingisincontactwiththevanesduring working:1therotor;2thepumpshaft;3theexternalsurfaceofthehousing.

Thespeedofthecamshaftinatwo-stroke/cycledieselenginerunningat950RPMis _____.

Theamountoffluiddeliveredbyapositivedisplacementpumpcanberegulatedby_____.

Whichofthefollowingpumpswillbuildupaburstingpressureorstalltheirmotors ifthedischargevalvesareclosed?1gear;2centrifugal;3screw.

Theamountoffluiddeliveredbyahelicalpumpcanberegulatedby_____.

Thejacketwatertemperatureinadieselengineclosedfreshwatercoolingsystemis normallycontrolledby_____.

Scaleanddirtaccumulationinthewatersideofalubeoilcoolerwillbeindicatedby agradualincreaseinthelubeoil

Whichofthefollowingmayhardnessoftheboilerwatercause?1scaleformation;2 tubefailure;3corrosion.

Itshouldbeensuredthatonly_____vaporishandledbytherefrigerationcompressor.

Theinternalpartoftheboileriffound_____hastobechemicallywashedbyyard.

Athree-waythermostaticcontrolvalveregulatesthedieselenginecoolingwater temperaturebypassingaportionofthewater_____.

Ahydraulicmotormaybedrivenby_____.

Adazzlingwhiteburnerflameintheboilerfurnaceindicates_____.