Topic Outline
- MCQs in Base-Biased Amplifier
- MCQs in Emitter-Biased Amplifier
- MCQs in Small Signal Operation
- MCQs in AC Beta
- MCQs in AC Resistance of the Emitter Diode
- MCQs in Two Transistors Models
- MCQs in Analyzing an Amplifier
- MCQs in AC Quantities on the Data Sheet
Start Practice Exam Test Questions
Choose the letter of the best answer in each questions.
1. The emitter is at ac ground in a
- a. CB stage
- b. CC stage
- c. CE stage
- d. None of these
2. The output voltage of a CE stage is usually
- a. Constant
- b. Dependent on re'
- c. Small
- d. Less the one
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
4. The input impedance of the base increases when
- a. Beta increases
- b. Supply voltage increases
- c. Beta decreases
- d. AC collector resistance increases
5. Voltage gain is directly proportional to
- a. Beta
- b. Ac emitter resistance
- c. DC collector voltage
- d. AC collector resistance
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
7. Compared to a CE stage, a swamped amplifier has an input impedance that is
- a. Smaller
- b. Equal
- c. Larger
- d. Zero
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
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
10. A swamped amplifier uses
- a. Base bias
- b. Positive feedback
- c. Negative feedback
- d. A grounded emitter
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
12. The feedback resistor
- a. Increases voltage gain
- b. Reduces distortion
- c. Decreases collector resistance
- d. Decreases input impedance
13. The feedback resistor
- a. Stabilizes voltage gain
- b. Increases distortion
- c. Increases collector resistance
- d. Decreases input impedance
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
15. If the emitter bypass capacitor opens, the ac output voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
16. If the collector resistor is shorted, the ac output voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
17. If the load resistance is open, the ac output voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
18. If any capacitor is open, the ac output voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
19. If the input coupling capacitor is open, the ac input voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
20. If the bypass capacitor is open, the ac input voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
21. If the output coupling capacitor is open, the ac input voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
22. If the emitter resistor is open, the ac input voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
23. If the collector resistor is open, the ac input voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal approximately zero
24. If the emitter bypass capacitor is shorted, the ac input voltage will
- a. Decrease
- b. Increase
- c. Remain the same
- d. Equal zero
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