Q.1

Base currents are usually small because of the physical construction of the thin and lightly doped base.

  • True
  • False
Q.2

The beta of a BJT is the ratio of collector current to emitter current.

  • True
  • False
Q.3

A _______________ JFET amplifier provides a voltage gain of less than one.

  • common-source
  • common-channel
  • common-drain
  • None of the above
Q.4

The beta of a BJT is the ratio of collector current to emitter current.

  • True
  • False
Q.5

Changing ________ can control the voltage gain of a common-source amplifier.

  • the input voltage
  • gm
  • VDD
  • RS
Q.6

A(n) ___ has a conductive channel only when it is biased properly.

  • p-channel JFET
  • n-channel D-MOSFET
  • p-channel D-MOSFET
  • n-channel E-MOSFET
Q.7

The gate-source junction of a JFET must be ________ for proper linear operation.

  • forward-biased
  • reverse-biased
  • either forward-biased or reverse-biased
  • neutral
Q.8

The collector current in a class A amplifier flows for ________ of the ac input signal.

  • < 180°
  • 180°
  • < 360°
  • 360°
Q.9

The ___ oscillator takes advantage of the piezoelectric effect.

  • crystal
  • Hartley
  • Colpitts
  • RC
Q.10

Removing a bypass capacitor from a common-emitter amplifier circuit will _________ voltage gain and ________ input resistance.

  • increase, decrease
  • decrease, increase
  • decrease, decrease
  • increase, increase
Q.11

In order to sustain oscillations in a feedback oscillator, the gain should be _________ so the product of Av × B equals_______.

  • reduced, one
  • reduced, less than one
  • increased, more than one
  • increased, much greater than one
Q.12

VCE approximately equals _______ when a transistor is in saturation.

  • VCC
  • VB
  • 0.2 V
  • 0.7 V
Q.13

Removing a bypass capacitor from a common-emitter amplifier circuit will _________ voltage gain and ________ input resistance.

  • increase, decrease
  • decrease, increase
  • decrease, decrease
  • increase, increase
Q.14

The gain of a BJT is called _______ and the gain of a JFET is called _______.

  • beta, alpha
  • transconductance, beta
  • beta, transconductance
  • transconductance, transconductance
Q.15

The power gain (Ap) of any transistor amplifier circuit equals the ___________.

  • current gain squared
  • current gain times the voltage gain
  • voltage gain times the output resistance
  • current gain plus the voltage gain
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