Below are the answers key for Multiple Choice Questions in Chapter 21: Active Filters from the book Electronic Principles 7th Edition by Albert Malvino. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.
1. c. Transition
2. b. Geometric average of the cutoff frequencies
3. d. greater than 1
4. c. Notch filter
5. c. the same gain at all frequencies
6. b. Inverse Chebyshev
7. c. Elliptic
8. d. Bessel
9. d. 13
10. d. 360 dB per decade
11. d. Elliptic
12. b. Rippled stopband
13. c. Constant time delay
14. d. Bessel
15. a. One capacitor
16. b. Chebyshev response
17. a. VCVS filters
18. b. 5 second-order stages
19. d. Staggered Q's
20. d. Staggered center frequencies and Q's
21. a. Voltage gain
22. d. Divided by the K values
23. b. Q decreases
24. b. MFB stages
25. b. Phase shift is important
26. c. 0 degrees to -360 degrees
27. b. Delay equalizer
28. d. All of the above
29. a. Has a low-pass, high-pass, and bandpass output
30. d. Increase
31. b. Predistortion
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