Q.1

A collector characteristic curve is a graph showing:

  • emitter current (IE) versus collector-emitter voltage (VCE) with (VBB) base bias voltage held constant
  • collector current (IC) versus collector-emitter voltage (VCE) with (VBB) base bias voltage held constant
  • collector current (IC) versus collector-emitter voltage (VC) with (VBB) base bias voltage held constant
  • collector current (IC) versus collector-emitter voltage (VCC) with (VBB) base bias voltage held constant
Q.2

In a C-E configuration, an emitter resistor is used for:

  • stabilization
  • ac signal bypass
  • collector bias
  • higher gain
Q.3

If a 2 mV signal produces a 2 V output, what is the voltage gain?

  • 0.001
  • 0.004
  • 100
  • 1000
Q.4

Voltage-divider bias provides:

  • an unstable Q point
  • a stable Q point
  • a Q point that easily varies with changes in the transistor's current gain
  • a Q point that is stable and easily varies with changes in the transistor’s current gain
Q.5

With low-power transistor packages, the base terminal is usually the:

  • tab end
  • middle
  • right end
  • stud mount
Q.6

When a silicon diode is forward biased, what is VBE for a C-E configuration?

  • voltage-divider bias
  • 0.4 V
  • 0.7 V
  • emitter voltage
Q.7

Most of the electrons in the base of an NPN transistor flow:

  • out of the base lead
  • into the collector
  • into the emitter
  • into the base supply
Q.8

To operate properly, a transistor's base-emitter junction must be forward biased with reverse bias applied to which junction?

  • collector-emitter
  • base-collector
  • base-emitter
  • collector-base
Q.9

What is the current gain for a common-base configuration where IE = 4.2 mA and IC = 4.0 mA?

  • 16.80
  • 1.05
  • 0.20
  • 0.95
Q.10

In a transistor, collector current is controlled by:

  • collector voltage
  • base current
  • collector resistance
  • all of the above
Q.11

The ends of a load line drawn on a family of curves determine:

  • saturation and cutoff
  • the operating point
  • the power curve
  • the amplification factor
Q.12

With a PNP circuit, the most positive voltage is probably:

  • ground
  • VC
  • VBE
  • VCC
Q.13

Total emitter current is:

  • IE – IC
  • IC + IE
  • IB + IC
  • IB – IC
Q.14

If VCC = +18 V, voltage-divider resistor R1 is 4.7 komega.gif, and R2 is 1500omega.gif, what is the base bias voltage?

  • 8.70 V
  • 4.35 V
  • 2.90 V
  • 0.7 V
Q.15

Total emitter current is:

  • IE – IC
  • IC + IE
  • IB + IC
  • IB – IC
Q.16

Often a common-collector will be the last stage before the load; the main function(s) of this stage is to:

  • provide voltage gain
  • provide phase inversion
  • provide a high-frequency path to improve the frequency response
  • buffer the voltage amplifiers from the low-resistance load and provide impedance matching for maximum power transfer
Q.17

The C-B configuration is used to provide which type of gain?

  • voltage
  • current
  • resistance
  • power
Q.18

When transistors are used in digital circuits they usually operate in the:

  • active region
  • breakdown region
  • saturation and cutoff regions
  • linear region
Q.19

For a C-C configuration to operate properly, the collector-base junction should be reverse biased, while forward bias should be applied to which junction?

  • collector-emitter
  • base-emitter
  • collector-base
  • cathode-anode
Q.20

The Q point on a load line may be used to determine:

  • VC
  • VCC
  • VB
  • IC
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