Below are the answers key for Multiple Choice Questions in Chapter 23: Oscillators 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. a. Positive feedback
2. b. Noise voltage in resistors
3. a. At low frequencies
4. c. Between 0 and -90 degrees
5. b. Lead circuit
6. a. Between 0 and +90 degrees
7. c. Both types of feedback
8. d. High
9. a. Notch filter
10. b. Two resistors
11. b. Three lead or fagcircuits
12. d. 360 degrees
13. C. Colpitts
14. b. Causes saturation and cutoff
15. a. Decreases
16. b. Transformer coupling
17. b. Two inductors
18. d. One capacitor
19. b. Clapp
20. d. All the above
21. b. High Q
22. a. Very close together
23. d. Quartz crystal
24. b. 1
25. a. 0
26. d. Timing capacitance increases
27. c. rectangular
28. b. Period
29. d. Space
30. d. Equals fin
31. a. Capture range
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