Kennedy: MCQ in Semiconductor Microwave Devices and Circuits – Answers

(Last Updated On: February 7, 2020)

Kennedy: MCQ in Semiconductor Microwave Devices and Circuits

Below are the answers key for Multiple Choice Questions in Chapter 12: Semiconductor Microwave Devices and Circuits from the book Electronic Communication Systems by George Kennedy. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

1. d. to improve the noise performance temperature

2. c. because it cannot operate at room temperature

3. b. is more likely to radiate

4. d. stripline

5. c. higher power-handling capability

6. a. easier integration with semiconductor devices

7. d. quartz crystal

8. a. transmission media like stripline

9. b. lend themselves more easily to integration

10. c. a step-recovery diode

11. b. higher efficiency

12. d. RIMPATT

13. a. Backward

14. d. PIN diode

15. a. Tunnel

16. b. gallium arsenide

17. d. beta of the transistor falls to unity unity

18. d. emitter area must be large

19. c. as an oscillator

20. c. a step-recovery diode must be used

21. b. degenerative amplifier

22. d. fp – fi

23. d. provide greater bandwidth

24. a. prevent noise feedback

25. b. yields a low noise figure

26. c. uses a high doping level to provide a narrow junction

27. a. increase the frequency stability

28. b. is available between the peak and valley points

29. c. larger voltage swing

30. a. electron transfer to a less mobile energy level

31. a. has a suitable empty energy band, which silicon does not have

32. b. high noise

33. d. provide frequency adjustments

34. a. a much greater bandwidth

35. c. must be cooled down to a few kelvins

36. c. radar

37. c. is an oscillator

38. d. single-frequency

39. b. using Q spoiling

40. b. prevent atmospheric interference

41. c. lower cost

Complete List of MCQ in Electronic Communication Systems by Kennedy

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