MCQs in Negative Feedback

Multiple Choice Questions in Negative Feedback from the book Electronic Principles by Albert Malvino. Make sure to familiarize each and every questions

MCQs in Negative Feedback
This is the Multiple Choice Questions in Chapter 19: Negative Feedback 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 Four Types of Negative Feedback
  • MCQs in VCVS Voltage Gain
  • MCQs in ICVS Amplifier
  • MCQs in VCIS Amplifier
  • MCQs in ICIS Amplifier
  • MCQs in Bandwidth

Begin and Good luck!

Choose the letter of the best answer in each questions.

1. With negative feedback, the returning signal

  • a. Aids the input signal
  • b. Opposes the input signal
  • c. Is proportional to output current
  • d. Is proportional to differential voltage gain

2. How many types of negative feedback are there?

  • a. One
  • b. Two
  • c. Three
  • d. Four

3. A VCVS amplifier approximates an ideal

  • a. Voltage amplifier
  • b. Current-to-voltage converter
  • c. Voltage-to-current converter
  • d. Current amplifier

4. The voltage between the input terminals of an ideal op amp is

  • a. Zero
  • b. Very small
  • c. Very large
  • d. Equal to the input voltage

5. When an op amp is not saturated, the voltages at the non-inverting and inverting inputs are

  • a. Almost equal
  • b. Much different
  • c. Equal to the output voltage
  • d. Equal to +15 V

6. The feedback fraction B

  • a. Is always less than 1
  • b. Is usually greater than 1
  • c. May equal 1
  • d. May not equal 1

7. An ICVS amplifier has no output voltage. A possible trouble is

  • a. No negative supply voltage
  • b. Shorted feedback resistor
  • c. No feedback voltage
  • d. Open load resistor

8. In a VCVS amplifier, any decrease in open-loop voltage gain produces an increase in

  • a. Output voltage
  • b. Error voltage
  • c. Feedback voltage
  • d. Input voltage

9. The open-loop voltage gain equals the

  • a. Gain with negative feedback
  • b. Differential voltage gain of the op amp
  • c. Gain when B is 1
  • d. Gain at funity

10. The loop gain AOLB

  • a. Is usually much smaller than 1
  • b. Is usually much greater than 1
  • c. May not equal 1
  • d. Is between 0 and 1

11. The closed-loop input impedance with an ICVS amplifier is

  • a. Usually larger than the open-loop input impedance
  • b. Equal to the open-loop input impedance
  • c. Sometimes less than the open-loop impedance
  • d. Ideally zero

12. With an ICVS amplifier, the circuit approximates an ideal

  • a. Voltage amplifier
  • b. Current-to-voltage converter
  • c. Voltage-to-current converter
  • d. Current amplifier

13. Negative feedback reduces the

  • a. Feedback fraction
  • b. Distortion
  • c. Input offset voltage
  • d. Loop gain

14. A voltage follower has a voltage gain of

  • a. Much less than 1
  • b. 1
  • c. More than 1
  • d. A

15. The voltage between the input terminals of a real op amp is

  • a. Zero
  • b. Very small
  • c. Very large
  • d. Equal to the input voltage

16. The transresistance of an amplifier is the ratio of its

  • a. Output current to input voltage
  • b. Input voltage to output current
  • c. Output voltage to input voltage
  • d. Output voltage to input current

17. Current cannot flow to ground through

  • a. A mechanical ground
  • b. An ac ground
  • c. A virtual ground
  • d. An ordinary ground

18. In a current-to-voltage converter, the input current flows

  • a. Through the input impedance of the op amp
  • b. Through the feedback resistor
  • c. To ground
  • d. Through the load resistor

19. The input impedance of a current-to-voltage converter is

  • a. Small
  • b. Large
  • c. Ideally zero
  • d. Ideally infinite

20. The open-loop bandwidth equals

  • a. funity
  • b. f2(OL)
  • c. funity/ACL
  • d. fmax

21. The closed-loop bandwidth equals

  • a. funity
  • b. f2(OL)
  • c. funity/ACL
  • d. fmax

22. For a given op amp, which of these is constant?

  • a. f2(CL)
  • b. Feedback voltage
  • c. ACL
  • d. ACLf2(CL)

23. Negative feedback does not improve

  • a. Stability of voltage gain
  • b. Nonlinear distortion in later stages
  • c. Output offset voltage
  • d. Power bandwidth

24. An ICVS amplifier is saturated. A possible trouble is

  • a. No supply voltages
  • b. Open feedback resistor
  • c. No input voltage
  • d. Open load resistor

25. A VCVS amplifier has no output voltage. A possible trouble is

  • a. Shorted load resistor
  • b. Open feedback resistor
  • c. Excessive input voltage
  • d. Open load resistor

26. An ICIS amplifier is saturated. A possible trouble is

  • a. Shorted load resistor
  • b. R2 is open
  • c. No input voltage
  • d. Open load resistor

27. An ICVS amplifier has no output voltage. A possible trouble is

  • a. No positive supply voltage
  • b. Open feedback resistor
  • c. No feedback voltage
  • d. Shorted load resistor

28. The closed-loop input impedance in a VCVS amplifier is

  • a. Usually larger than the open-loop input impedance
  • b. Equal to the open-loop input impedance
  • c. Sometimes less than the open-loop input impedance
  • d. Ideally zero

Check your work.

Complete List of MCQs in Electronic Principles by Albert Malvino


Labels:

Post a Comment

Contact Form

Name

Email *

Message *

Powered by Blogger.
Javascript DisablePlease Enable Javascript To See All Widget