(8.2.4)--Chapter 4 DC Biasing-BJTS模拟电子技术基础.doc

Chapter4:DCBiasing-BJTS

1)WhenaBJTisbiasedintheactiveregion,itsbase-emitterjunctionis________-biasedanditscollector-basejunctionis________-biased.

A)forward;reverse

B)reverse;forward

C)forward;forward

D)reverse;reverse

2)WhenaBJTisbiasedinthecut-offregion,itsbase-emitterjunctionis________-biasedanditscollector-basejunctionis________-biased.

A)forward;reverse

B)reverse;forward

C)forward;forward

D)reverse;reverse

3)WhenaBJTisbiasedinthesaturationregion,itsbase-emitterjunctionis________-biasedanditscollector-basejunctionis________-biased.

A)forward;reverse

B)reverse;forward

C)forward;forward

D)reverse;reverse

4)Calculatethebasecurrentforthiscircuit.

A)0.904mA

B)0.96mA

C)0.056mA

D)6.0mA

5)Calculatethemaximumcollectorcurrentforthiscircuit.

A)0.904mA

B)0.96mA

C)0.056mA

D)6.0mA

6)WhenaBJTisbiasedinthecutoffregionthecollector-to-emittervoltageistypicallyequalto________.

A)theemittervoltage

B)0.03V

C)thecollectorcurrenttimesthecollectorresistor

D)thecollectorsupplyvoltage

7)Thisemitter-stabilizedbiascircuitisoperatinginthe________.

A)saturationregion

B)cutoffregion

C)activeregion

D)Thetransistorisnotproperlybiased.

8)Calculatethebasecurrentforthisemitter-stabilizedbiascircuit.

A)89.0mA

B)89.0μA

C)0.119mA

D)Noneoftheabove

9)Calculatethecollector-emittervoltageforthisemitter-stabilizedcircuit.

A)4.32V

B)10.68V

C)0.1335V

D)14.24V

10)Calculatethebasecurrentforthisvoltage-dividerbiascircuit.

A)233.78μA

B)34.62μA

C)596.55μA

D)76.8μA

11)Whenvoltage-dividerbiasisused,itisconsideredappropriatetousetheapproximateanalysistodeterminethebiasconditionwhentheresistanceR2is________(1+β)RE.

A)greaterthan

B)lessthan

C)verymuchgreaterthan

D)verymuchlesstha