Below are the answers key for Multiple Choice Questions in Chapter 1: Introduction to Communication Systems 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. in the channel
2. a. fundamental and subharmonic sine waves
3. a. reduce the bandwidth used
4. b. predictable in character
5. c. superheterodyne group
6. a. Antenna lengths will be approximately λ/4 long
7. d. the 1840s
8. b. encoding
9. d. person-to-person voice communications
10. a. superimposing a low frequency on a high frequency
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