18。Delphi笔试题目
机械类笔试试题
1。Brieflydescribewhatisblanking(g),f,dembossinginstampingprocess。
2。Whatismetalg?
3。Whatisthepurposeofaddingglassfibertothermoplasticmaterial?
4。Intrastwithmetalaicmaterial,whichhasahighertofthermalexpansion(CTE)。
5。Themostsuitablematerialfralhiypicalplastiess=0。25to0。5mmathinge)
6。dingloadmakesbothpressivearessinamember?
7。Whatisthedesigncriteriausedinplasticsap?
8。WhatisFEA?
9。Whyisnaturalfrequencyimportantinvibrationanalysis?
10。Whatisthedefleequationofatileverbeamfixedatoneedge?
EE笔试试题
1。Name3VehicleBuses。
2。Name2possiblesourceserfereronicsCircuitA**。
3。Wavelengthfor12MHzfrequenalis____
4。aionsforaoaudiosignalprodermultipath?
5。WhatisthetypicalFMreceiverRFsigoachieve30dBSNforcarradio?
6。Whenaradioistuo98。1MHz&withaLOof108。8MHz,whatistheimagefrequency?
7。ForasystemedaistheRefletandSWR?
8。WhichpropertyoftheoutputcapacitoristheprimarycauseofLowDropulatorloopinstability?
&seriesresistance(ESR)
&iveseriesinduce(ESL)
(3)cevalue
(4)Dielectricmaterial
9。Theswitgregulatoriscapableof:
(1)Higherpowerefficy
(2)Providinganoutputvoltagethatishighertha
&inganoutputboltageoppsiteinpolaritytotheinput
(4)Alloftheabove
10。AlioropVin(max)=10v,Vout(min)=4。8v,Iout(max)=2。5mA,Iq(max)=2。5mA,Ta(max)=8。5摄氏度,Theregulatorisavailablein3packages。Eachpackagehasthefollowingthermalcharacteristics: