# MCQs in Operational Amplifiers - Answers

Answers key for the MCQs in Operational Amplifiers from the book Electronic Devices and Circuit Theory 10th Edition by Robert L. Boylestad.

Below are the answers key for the Multiple Choice Questions (Quiz) in Operational Amplifiers from the book Electronic Devices and Circuit Theory 10th Edition by Robert L. Boylestad.

1. All of the above

2. single-ended input

3. double-ended (differential) input

4. double-ended output

5. common-mode operation

6. Common-mode

7. Emitters

8. Bipolar and MOSFET

9. bipolar, MOSFET, BiMOS

10. Virtually zero

11. Virtually zero

12. 1

13. –10

14. 11

15. 1

16. 50 mV

17. –1.5 V

18. –1 / RC

19. True

20. inverting amplifier

21. integrator

22. differentiator

23. Both an input offset voltage, VIO and an input offset current, IIO

24. –20 dB / decade or –6 dB / octave

25. All of the above

26. 1

27. 15 Hz

28. 5 V/ms

29. 250

30. 0.00375

31. The sum of the differential gain times the difference input voltage and the common-mode gain times the common input voltage.

32. The differential gain times twice the input signal.

33. The common-mode gain times the input signal.

34. V i1 = –V i2 = 0.50 V

35. Vi1 = –Vi2 = 0.50 V

### FILL-IN-THE-BLANKS Questions

1. very high, wide

2. high, low

3. 180Âº

4. either an input is applied between the two input terminals or two separate signals are applied to the input terminals

5. outputs from both output terminals, which have opposite polarities

6. highly, slightly

7. single-ended

8. double-ended

9. common-mode

10. very large, very small

11. BiFET

12. CMOS

13. CMOS

14. infinite, zero, infinite

15. inverting

16. capacitor

17. V/ms

18. All of the above

19. increases, increases

20. decreases, decreases

21. None of the above

22. the input offset voltage and input offset current

23. closed-loop gain

24. average of the sum

26. infinite, larger

### Complete List of Chapter Quiz in Electronic Devices and Circuit Theory

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