1. The emitter is at ac ground in a
a. CB stage
b. CC stage
c. CE stage
d. None of these
c
2. The output voltage of a CE stage is usually
a. Constant
b. Dependent on re'
c. Small
d. Less the one
b
3. The voltage gain equals the output voltage divided by the
a. Input voltage
b. AC emitter resistance
c. AC collector resistance
d. Generator voltage
a
4. The input impedance of the base increases when
a. Beta increases
b. Supply voltage increases
c. Beta decreases
d. AC collector resistance increases
a
5. Voltage gain is directly proportional to
a. Beta
b. Ac emitter resistance
c. DC collector voltage
d. AC collector resistance
d
6. Compared to the ac resistance of the emitter diode, the feedback resistance of a swamped amplifier should be
a. Small
b. Equal
c. Large
d. Zero
c
7. Compared to a CE stage, a swamped amplifier has an input impedance that is
a. Smaller
b. Equal
c. Larger
d. Zero
c
8. To reduce the distortion of an amplified signal, you can increase the
a. Collector resistance
b. Emitter feedback resistance
c. Generator resistance
d. Load resistance
b
9. The emitter of a swamped amplifier
a. Is grounded
b. Has no de voltage
c. Has an ac voltage
d. Has no ac voltage
c
10. A swamped amplifier uses
a. Base bias
b. Positive feedback
c. Negative feedback
d. A grounded emitter
c
11. In a swamped amplifier, the effects of the emitter diode become
a. Important to voltage gain
b. Critical to input impedance
c. Significant to the analysis
d. Unimportant
d
12. The feedback resistor
a. Increases voltage gain
b. Reduces distortion
c. Decreases collector resistance
d. Decreases input impedance
b
13. The feedback resistor
a. Stabilizes voltage gain
b. Increases distortion
c. Increases collector resistance
d. Decreases input impedance
a
14. The ac collector resistance of the first stage includes the
a. Load resistance
b. Input impedance of first stage
c. Emitter resistance of first stage
d. Input impedance of second stage
d
15. If the emitter bypass capacitor opens, the ac output voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal zero
a
16. If the collector resistor is shorted, the ac output voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal zero
d
17. If the load resistance is open, the ac output voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal zero
b
18. If any capacitor is open, the ac output voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal zero
a
19. If the input coupling capacitor is open, the ac input voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal zero
d
20. If the bypass capacitor is open, the ac input voltage will
a. Decrease
b. Increase
c. Remainthe same
d. Equal zero
b
21. If the output coupling capacitor is open, the ac input voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal zero
c
22. If the emitter resistor is open, the ac input voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal zero
b
23. If the collector resistor is open, the ac input voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal approximately zero
a
24. If the emitter bypass capacitor is shorted, the ac input voltage will
a. Decrease
b. Increase
c. Remain the same
d. Equal zero
a
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