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
In a C-E configuration, an emitter resistor is used for:
-
stabilization -
ac signal bypass -
collector bias -
higher gain
If a 2 mV signal produces a 2 V output, what is the voltage gain?
-
0.001 -
0.004 -
100 -
1000
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 transistors current gain
With low-power transistor packages, the base terminal is usually the:
-
tab end -
middle -
right end -
stud mount
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
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
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
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
In a transistor, collector current is controlled by:
-
collector voltage -
base current -
collector resistance -
all of the above
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
With a PNP circuit, the most positive voltage is probably:
-
ground -
VC -
VBE -
VCC
Total emitter current is:
-
IE – IC -
IC + IE -
IB + IC -
IB – IC
If VCC = +18 V, voltage-divider resistor R1 is 4.7 k
, and R2 is 1500, what is the base bias voltage?
-
8.70 V -
4.35 V -
2.90 V -
0.7 V
Total emitter current is:
-
IE – IC -
IC + IE -
IB + IC -
IB – IC
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
The C-B configuration is used to provide which type of gain?
-
voltage -
current -
resistance -
power
When transistors are used in digital circuits they usually operate in the:
-
active region -
breakdown region -
saturation and cutoff regions -
linear region
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
The Q point on a load line may be used to determine:
-
VC -
VCC -
VB -
IC