第一章测试
1
【单选题】(2分)
Whichofthefollowingisnotacommonlyusedsemiconductormaterial'?()
A. germanium
B. carbon
C. silicon
D. lead
2
【单选题】(2分)
Thecharacteristicofanidealdiodearethoseofaswitchthatcanconductcurrent().
A.
inbothdirections
B.
inonedirectiononly
C.
dependsonthecircuititisusedin
D.
inbothdirectionsbutinonlyonedirectionatatime
3
【单选题】(2分)
Whenadiodeisdopedwitheitherapentavalentoratrivalentimpurityitsresistancewill().
A. decrease
B.
maketheresistancestableagainstvariationduetotemperature
C. increase
4
【单选题】(2分)
Thepiecewiselinearmodel,equivalentcircuitofthediodeconsistsof().
A. theidealdiode
B.
abatteryandtheidealdiode
C.
ajunctioncapacitor,abattery,asmallresistor,andtheidealdiode
D.
abattery,asmallresistor,andtheidealdiode
5
【单选题】(2分)
Whenap-njunctionisreverse-biased,itsjunctionresistanceis().
A.
determinedbythecomponentsthatareexternaltothedevice
B. low
C. high
D.
constantlychanging
第二章测试
1
【单选题】(2分)
Whatisthevalueofthevoltagedroppedacrossforward-biasedsilicondiodesthatareconnectedinparallelwitheachother?().
A. 1.4V
B. 11.3V
C. 0.35V
D. 0.7V
2
【单选题】(2分)
Theresistorvoltageandresistorcurrentinthiscircuitare().
A. 10V,5mA
B. 11V,2mA
C. 11V,11mA
D. 2V,11mA