# Malvino: MCQ in Voltage Amplifiers

(Last Updated On: February 7, 2020)

This is the Multiple Choice Questions in Chapter 10: Voltage Amplifiers from the book Electronic Principles 7th Edition by Albert Malvino. If you are looking for a reviewer in Electronics Engineering this will definitely help. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

### 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

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

• 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

### Complete List of MCQ in Electronic Principles by Albert Malvino

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