德尔福集团DELPHI的笔试题.docx

德尔福集团DELPHI的笔试题德尔福集团DELPHI的笔试题德尔福集团是全球最大的汽车系统和零部件生产制造商,为客户提供品种齐全的汽车系统,零部件和模块。今天成电的就业办老师介绍说，德尔福是汽车界的.华为，从来不在媒体上打广告。大家看看从美国空运过来的笔试题目1、Name3VehicleBuses.2、Name2possiblesourcesofElectromagneticinterferenceonElectronicsCircuitASM.3、Wavelengthfor12MHzfrequencysignalis____4、Name2importantconsiderationsforcarradioperformancerelatedtoaudiosignalprocessingundermultipathcondition?5、WhatisthetypicalFMreceiverRFsignalstrengthtoachieve30dBS/Nforcarradio?6、Whenaradioistunedto98.1MHz&withaLOof108.8MHz,whatistheimagefrequency?7、Forasystemwithamatchedimpedance,whatistheReflectionCoefficientandSWR?8、WhichpropertyoftheoutputcapacitoristheprimarycauseofLowDropOut(LDO)regulatorloopinstability?a)Equivalentseriesresistance(ESR)b)Effectiveseriesinductance(ESL)c)Capacitancevalued)Dielectricmaterial9、Theswitchingregulatoriscapableof:a)Higherpowerconversionefficiencyb)Providinganoutputvoltagethatishigherthantheinputc)Generatinganoutputboltageoppsiteinpolaritytotheinputd)Alloftheabove10、Alinearregulatorop*(没抄清楚)Vin(max)=10v,Vout(min)=4.8v,Iout(max)=2.5mA,Iq(max)=2.5mA,Ta(max)=8.5摄氏度，Theregulatorisavailablein3packages.Eachpackagehasthefollowingthermalcharacteristics:PackageRja(摄食度/W)Rjc(摄食度/W)TO2205035SO1412530D1P810052Choosethemostsuitablepackagetohandlethepowerdissipationrequirementwithoutaheatsinkandwhy.