3、The difference between the resulting equations for a network in which an npn transistor has been replaced by a pnp transistor is（）.

A.the values of the resistors

B.the value of β

C.the sign associates with the particular quantities

正确答案：the sign associates with the particular quantities

4、The term quiescent means（）.

A.midpoint-biased

B.at rest

C.active

D.inactive

正确答案：inactive

5、Voltage-divider bias stability is（）.

A.dependent on alpha

B.dependent of beta

C.dependent on the collector resistor

D.independent of beta

正确答案：independent of beta

第五章单元测试

1、Given this configuration， determine the input impedance if VS = 40 mV， Rsense = 0.5 kΩ， and the input current is 20 μA.（）

A.1.5 MΩ

B.5.822 MΩ

C.1，500 Ω

D.582 kΩ

正确答案：1，500 Ω

2、The

transistor model replaces the（）；with the junction diode'；s ac resistance.。

A.collector-base junction

B.collector-emitter junction

C.emitter（）base junction

正确答案：emitter（）base junction

3、Calculate the voltage gain for this circuit.（）

A.-137.25

B.-8.4

C.-7.91

D.-16.34

正确答案：-137.25

4、A transistor amplifier has an input signal applied to its emitter terminal and an output signal taken from its collector terminal.The amplifier is a（n）（）.

A.common-emitter amplifier

B.common-base amplifier

C.common-collector amplifier

D.emitter follower

正确答案：common-base amplifier

5、The voltage gain of a very well-designed common collector amplifier configuration， using a pnp transistor， is（）.

A.about -0.9

B.about 0.9

C.in the range 0.95 to 0.99

D.in the range -0.95 to -0.99

正确答案：in the range 0.95 to 0.99

第六章单元测试

1、Shockley'；s equation defines the（）；of the FET and are unaffected by the network in which the device is employeD.

A.

；characteristics

B.drain characteristics

C.input/output characteristics

D.transfer characteristics

正确答案：transfer characteristics