Beasley/Electronic Communications

Chapter 1: Fundamental Communications Concept

Multiple Choice Questions

1. What agency in the United States has been given the authority to establish and enforce regulations regarding the use of radio transmitters and other generators of radio-frequency energy?

1. Transport and Communications Ministry
2. Federal Communications Commission (FCC)
3. International Telecommunication Union (ITU)
4. Bell Laboratories

2. What three ratios do decibels represent?

1. Powers, voltages, currents
2. Powers, voltages, frequencies
3. Voltages, frequencies, impedances
4. Logarithms, voltages, currents

3. Electric and magnetic fields both result from voltage potentials and _________.

1. Radio frequencies
2. Audio frequencies
3. Current flows
4. Electric charges

4. The carrier is often a(n) _____________.

1. sine wave
2. vector
3. angular frequency
4. amplitude modulation

5. Electronics as a discipline within the field of physical science emerged from the discovery of __________.

1. microwaves
2. gamma rays
3. cosmic rays
4. radio waves