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WorksheetsBJT - BASICS
Total questions: 15
Worksheet time: 8mins
For a BJT, for common base configuration the input characteristics are represented by a plot between which of the following parameters?
VBE and IE
VBE and IB
VCC and IC
VCC and IC
In a BJT, if the collector-base junction is reverse-biased and the base-emitter junction is forward-biased, which region is the BJT operating in?
Cutoff region
Active region
Saturation region
Breakdown region
The value of IC is precisely zero when the value of IE is zero.
TRUE
FALSE
Which of the following correctly determines the relation between α and β?
α=β/(1-α)
β=α/(1-α)
β=α/(1-β)
β=α*(1-β)
Type of transistor circuits commonly used is
C-B
C-C
C-E
ALL THE ABOVE
using the figure decide, what is the BJT amplifier configurations:
Common Base amplifier
Common Emitter amplifier
Common Collector amplifier
decide what is the BJT amplifier configurations for the figure below
Common Base
Common Emitter
Common Collector
Which is beta's current ratio?
IC/IB
IC/IE
IB/IE
IE/IB
When a silicon diode is forward biased, what is VBE for a C-E configuration?
0 V
0.3 V
0.5 V
0.7 V
The ends of a load line drawn on a family of curves determine:
the operating point
the amplification factor
critical points
saturation and cutoff
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
If a 2 mV signal produces a 2 V output, what is the voltage gain?
0.001
1000
10
0.002
Calculate minority current ICO if IC = 20.002 mA and IC majority = 20 mA.
2 micro amps
0.002 micro amps
2 nano amps
2 milli amps
Use this table of collector characteristics to calculate beta at VCE = 7.5 V and IB = 30 micro amps
100
10
106
50
Most specification sheets of a device are broken down into ________.
maximum ratings
thermal characteristics
electrical characteristics
All of the above
