技能鉴定简答

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1、技能鉴定简答Thefunctionofthe1048V/Fconverteris(Cforvoltage-frequencyconversion)Thevoltageamplificationoftheemitterfollowerinthe1049transistoramplificationcircuitis(Bapproximatelyequalto1)1050accordingtoohm'slaw,theresistanceelementisa(C)elementThelineofpowersupplyof1051hi

2、ghpressurefactoryiscommonlyused(Asinglebussection)theconnectionoftheplantoftheplantofthesamestationisconnectedtothesamesegmentofthebus2052insingle-phasefullwaverectifiercircuit,theoutputvoltageoftherectifiertransformeris(C20V)ifthedevoltageisrequiredtobe18V.Thestati

3、cworkingpointofthe2053classsingle-tubepoweramplifierislocatedin(B).Ifyourequireahighinputresistanceintheamplifiercircuit,use(Bseriesnegativefeedback)Andifyouchangeittotheequivalentofatriangle,thenthecorrespondingthreeresistorswill(Bgetsbigger)2056inadeamplifiercircu

4、it,thestaticworkpointwill(Bbelarge)whenthecurrentamplificationisincreasedbytemperaturerise.Whenusingmeshtosolvecomplexcircuits,thenetholecurrentis(C)2058inasinglephasebridgerectifiercircuit,thyristorphaseshiftintherangeof0°and180°)(DWhenthethree-phaseasynchronousmot

5、orworks,thecurrentinthecagewinding(Bisac,lowfrequency)2097thestaticcharacteristicoftheregulatinggatewhichisconducivetothestabilityofthesystemis(Bparaboliccharacteristic)Themaximumoverloadpressureofthe3098and820smarttransmitterisB150%oftheupperlimitThe3099,thevibrati

6、ngstringtransmitterconvertsthechangeinpressure(differentialpressure)tothesensitiveelementofchange,thekeycomponentofthetransmitterThe3100slipmotorismadeupof(therodenttypeasynchronousmotor,measuringgenerator,electromagneticdifferentialclutch)Thespeedcontrolprincipleof

7、the3101converteristochangethespeedofthemotorbychangingtheDoftheinputsigna1.AfrequencyBphaseCvoltageDabove3102,DCSdeviceitselfisonlyAAcombinationofsoftwareandhardware,onlyafterthesoftwareandhardwareconfiguration(A)canbereallysuitablefortheapplicationoftheproductionpr

8、ocesscontrolsystemThe3103clustercontrolsystemiscenteredon(Bmicroprocessors)3104hasatemperaturetransducerthatismatchedwithathermocouple・The