2、For an n-channel depletion MOSFET，

= 8 mA and

= -6 V.If

= 0.8 V， what is the value of the drain current，

？（）

A.8 mA

B.10.25 μA

C.10.28 mA

D.6 mA

正确答案：10.28 mA

3、The region of the JFET drain curve that lies between pinch-off and breakdown is called（）.。

A.the constant-voltage region

B.the ohmic region

C.the saturation region

正确答案：the saturation region

4、In the family of FETs， you can expect to find（）.。

A.an；n-channel type

B.a；p-channel type

C.unipolar structure

正确答案：an；n-channel type；a；p-channel type；unipolar structure

5、FETs usually（）.

A.are less sensitive to temperature change than BJTs

B.have a higher input impudence than BJTs

C.are smaller in construction than BJTs

正确答案：are less sensitive to temperature change than BJTs；have a higher input impudence than BJTs；

are smaller in construction than BJTs

第七章单元测试

1、This graphical solution represents（）.

A.fixed bias for an；n-channel JFET

B.voltage-divider bias for an；n-channel JFET

C.self bias for an；n-channel JFET

正确答案：self bias for an；n-channel JFET

2、Generally， it is good design practice for linear amplifiers to have operating points that close to（）.

A.are close to saturation level

B.the cut-off region

C.the midpoint of the load line

正确答案：the midpoint of the load line

3、Which of the following biasing circuits can be used with E-MOSFETs？（）

A.self bias

B.zero bias

C.drain-feedback bias

D.current-source bias

正确答案：drain-feedback bias

4、The primary difference between JFETs and depletion-type MOSFETs is（）.。

A.JFETs can have positive values of

；and levels of drain current that exceed

B.depletion-type MOSFETs can have positive values of