Kennedy: MCQ in Waveguides, Resonators and Components – Answers

Below are the answers key for Multiple Choice Questions in Chapter 10: Waveguides, Resonators and Components 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. b. they are reflected from the walls but do not travel along them

2. d. they would be too bulky at lower frequencies

3. a. is greater than of free space

4. c. transmission lines use the principal mode of propagation, and therefore do not suffer from low-frequency cut-off

5. c. are less bulky

6. b. transverse-magnetic

7. d. greater than in the actual direction of propagation

8. d. phase velocity

9. c. the characteristic impedance of the guide becomes infinite

10. d. TE2,0

11. b. the resulting impedance can be matched directly to coaxial lines

12. c. to compensate for discontinuities at the join

13. b. E-plane T

14. c. Iris

15. b. waveguide below cutoff

16. c. harmonically related resonant frequencies

17. d. to increase the bandwidth of the system

18. a. a nonconductive with magnetic properties

19. c. garnet

20. a. Curie temperature

21. d. suitable for use as a microwave switch

22. b. to allow the one antenna to be used for reception or retransmission without mutual interference

23. b. lower attenuation

24. c. Coaxial

25. b. ridged

26. c. rectangular waveguide

Complete List of MCQ in Electronic Communication Systems by Kennedy

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