For the emitter bias, the voltage across the emitter resistor is the same as the voltage between the emitter and the
Base
Collector
Emitter
Ground
A coupling capacitor is
A dc short
An ac open
A dc open and an ac short
A dc short and an ac open
The emitter is at ac ground in a
CB stage
CC stage
CE stage
None of these
For emitter bias, the voltage at the emitter is 0.7 V less than the
Base voltage
Emitter voltage
Collector voltage
Ground voltage
The capacitor that produces an ac ground is called a
Bypass capacitor
Coupling capacitor
DC open
AC open
The voltage gain equals the output voltage divided by the
Input voltage
AC emitter resistance
AC collector resistance
Generator voltage
VDB is noted for its
Unstable collector voltage
Varying emitter current
Large base current
Stable Q point
The capacitors of a CE amplifier appear to be
Open to ac
Shorted to dc
Open to supply voltage
Shorted to ac
A swamped amplifier uses
Base bias
Positive feedback
Negative feedback
A grounded emitter
VDB needs
Only three resistors
Only one supply
Precision resistors
More resistors to work better
The ac equivalent circuit is derived from the original circuit by shorting all
Resistors
Capacitors
Inductors
Transistors
In a swamped amplifier, the effects of the emitter diode become
Important to voltage gain
Critical to input impedance
Significant to the analysis
Unimportant
VDB normally operates in the
Active region
Cutoff region
Saturation region
Breakdown region
AC emitter resistance equals 25 mV divided by the
Quiescent base current
DC emitter current
AC emitter current
Change in collector current
The feedback resistor
Increases voltage gain
Reduces distortion
Decreases collector resistance
Decreases input impedance
If the emitter resistance is reduced by one-half in a VDB circuit, the collector current will
Double
Drop in half
Remain the same
Increase
The output voltage of a CE amplifier is
Amplified
Inverted
180 ° out of phase with the input
All of the above
The ac collector resistance of the first stage includes the
Load resistance
Input impedance of first stage
Emitter resistance of first stage
Input impedance of second stage
The base voltage of two-supply emitter bias (TSEB) is
0.7 V
Very large
Near 0 V
1.3 V
The emitter of a CE amplifier has no ac voltage because of the
DC voltage on it
Load resistor
If the input-coupling capacitor is open, the ac input voltage will
Decrease
Equal zero
The Q point of TSEB does not depend on the
Emitter resistance
Collector resistance
Current gain
The voltage across the load resistor of a capacitor-coupled CE amplifier is
DC and AC
DC only
AC only
Neither DC or AC
The ac collector current equals the ac base current times the
DC current gain
AC current gain
For dc, the current in a coupling circuit is
Zero
Maximum
Minimum
Average
